Networks of loss: Relationships among symptoms of prolonged grief following spousal and parental loss

Depression is Associated with Treatment Response Trajectories in Adults with Prolonged Grief Disorder: A Machine Learning Analysis

Although evidence-based treatments for Prolonged Grief Disorder (PGD) exist, pretreatment characteristics associated with differential improvement trajectories have not been identified. To identify clinical factors relevant to optimizing PGD treatment outcomes, we used unsupervised and supervised machine learning to study treatment effects from a double-blinded, placebo-controlled, randomized clinical trial. Participants were randomized into four treatment groups for 20 weeks: citalopram with grief-informed clinical management, citalopram with prolonged grief disorder therapy (PGDT), pill placebo with PGDT, or pill placebo with clinical management. The trial included 333 PGD patients aged 18-95 years (M age = 53.9; SD ± 14.4), predominantly female (77.4%) and white (84.4%). Symptom trajectories were assessed using latent growth mixture modeling based on Inventory for Complicated Grief scores collected at six time points every 4 weeks. The relationship between patient-level characteristics and assigned trajectories was examined using logistic regression with elastic net regularization based on the administration of citalopram, PGDT, and risk factors for developing PGD. Three distinct response trajectories were identified: lesser severity responders (60%, n = 200), greater severity responders (18.02%, n = 60), and non-responders (21.92%, n = 73). Differences between greater severity responders and non-responders emerged as statistically significant by Week 8. The elastic net model demonstrated acceptable discrimination between responders and non-responders (AUC = .702; accuracy = .684). Higher baseline depression severity, grief-related functional impairment, and absence of PGDT were associated with reduced treatment response likelihood. These findings underscore the importance of early identification of clinical factors to optimize individualized PGD treatment strategies.

Trial Registration

clinicaltrials.gov Identifier: NCT01179568.

The Role of Social Media Communication in the Association Between Widowhood and Depressive Symptoms

Social support theory highlights the importance of social connections in coping with stress and adversity. Given that mobile technologies and internet have become important tools for social interaction, it is crucial to investigate the role of social media communication in the bereavement process. We examined whether the association between widowhood and depressive symptoms would be moderated by social media communication (i.e., chatting/messaging, social media, online community platforms, and video sharing). From the 2021 Korea Social Integration Survey, we analyzed a sample of 5,238 respondents (aged 40+) who were ever-married, comparing 4,725 married and 513 widowed individuals. Social media communication except chatting/messaging was associated with fewer depressive symptoms-regardless of widowhood. We also found that social media use (e.g., Facebook) attenuated the association between widowhood and depressive symptoms. Our findings highlight the importance of examining social engagement via information and communication technologies and the potential mechanism contributing to widowed adults' well-being.

Network analysis of prolonged grief disorder and anxiety symptoms among bereaved Chinese parents who lost their only child

Parents who have lost their only child and cannot or do not wish to adopt or have another child are labeled Shidu parents. Network analysis is used to examine symptom-level interactions in mental disorders. This study aimed to investigate the comorbidity network structure of prolonged grief disorder (PGD) and anxiety symptoms among Shidu parents and compare network differences between child loss from natural and unnatural causes. Key findings revealed that faintness, feeling afraid, panic, and meaninglessness are central symptoms, while meaninglessness, inability to trust others, and nightmares are bridge symptoms. The strongest connection in the PGD-anxiety network is between avoidance and shock, and the edge between meaninglessness and weakness strongly links the two communities. Shidu parents who experience unnatural loss have a stronger edge between inability to trust others and bitterness/anger. Highlighting these symptoms may help interventions address the comorbidities associated with PGD and anxiety among Shidu parents.

Patterns and relationships of prolonged grief, post-traumatic stress, and depressive symptoms in Chinese shidu parents: Latent profile and network analyses

Parents who experience the trauma of losing an only child are called "shidu" parents in China. There are individual differences in post-loss outcomes.1,061 Chinese shidu parents were asked to complete questionnaires assessing prolonged grief, post-traumatic stress, and depressive symptoms. The mean age of the sample was 59.68 (SD = 7.52), with the average time since the loss was 9.46 years (SD = 7.05). Most participants were female (62.3%). The main cause of the loss was an unnatural case (52.7%). Latent profile analysis was used to identify similar symptom patterns. Network analysis was used to explore the relationships among symptoms within different subgroups. A two-profile model based on symptom severity identified a "low symptom severity" subgroup (n = 419) and a "high symptom severity" subgroup (n = 642). In the low symptom severity subgroup network, the most central symptoms were loss of interest, feeling numb, and meaninglessness. In the high symptom severity subgroup network, the most central symptoms were physiological cue reactivity, emotional pain, and feeling easily startled. Individual differences in the post-loss outcomes of Chinese shidu parents are reflected not only in symptom patterns but also in the relationships among symptoms.

Pathways between grief, depression, hopelessness, reasons for living, and suicidal ideation in bereaved individuals

BACKGROUND

Associations between comorbid depression and grief with suicidal ideation (SI) have been inconsistent. To identify at-risk individuals, it is important to determine the role of symptom severity by examining both continuous and clinical-threshold grief and depression, in addition to other factors (i.e., hopelessness, reasons for living-RFL) associated with SI.

METHODS

Participants (n = 216) bereaved by combat, accident, or suicide completed an online survey. Associations between depression, grief, SI, RFL, and hopelessness were examined by multivariable logistic regressions and structural equation modeling (SEM).

RESULTS

Across the sample, hopelessness and RFL were associated with SI while continuous measures of grief and depression were not. In contrast, clinical-threshold grief, clinical-threshold depression, hopelessness, and RFL each were associated with SI. In addition, of the grief characteristics, yearning was the most robust correlate of SI, and Survival/Coping Beliefs (SCB) was the RFL most associated with SI. SEM indicated that direct paths between grief and SI, hopelessness and SI, and RFL and SI were significant, but not between depression and SI. Instead, depression had a strong direct effect on hopelessness, and hopelessness had a direct effect on SI.

DISCUSSION

Results are consistent with previously-identified associations between SI and clinical levels of depression and grief. More nuanced findings suggest hopelessness, yearning, and SCB as additional targets for reducing risk for SI in bereaved individuals regardless of whether they meet clinical thresholds for grief or depression.

Toward Centrality Evaluation of Yearning Symptoms for Prolonged Grief Disorder: A Cross-Cultural Approach

BACKGROUND

The new ICD-11 diagnosis of prolonged grief disorder (PGD) is characterized by the prominent role of yearning as hallmark symptom. A secondary analysis of eight international datasets on PGD was conducted to evaluate this assumption. Additionally, cross-cultural comparison explored whether the centrality of yearning differs across world regions.

METHODS

Primary studies originated from German-speaking countries (n = 4 samples), other European countries and Israel (n = 3 samples), as well as China (n = 1 samples). Different PGD measures were used, including yearning and longing as symptoms. For the centrality assessment of yearning, PGD symptoms were ranked by their factor loadings from confirmatory factor analyses, followed by statistical testing to determine significant differences between yearning and other symptoms of PGD in their factor loading estimates. Subsequently, ranking positions of yearning in three world regions (German-speaking, other Europe-Israel, and China) were compared. Finally, proxy thresholds for individuals at high-risk states for PGD were defined for the different datasets, and sensitivity-specificity analyses of yearning were performed.

RESULTS

Yearning was ranked high in five out of 12 models tested. In the German-speaking region, it was predominantly ranked among the most central symptoms; in the other Europe-Israel region as well as China, it tended to fall into the middle or lower rankings of symptom centrality. Sensitivity values were consistently high, while specificity values indicated moderate levels.

DISCUSSION

In line with previous research on the general outcomes of grief, the present study showed that yearning may be subject to a culture-specific distribution. Other central symptoms such as feeling as if a part of oneself died have also been shown to potentially play a central role in PGD across world regions. On the other hand, the sensitivity-specificity analyses revealed that yearning can be considered a significant (diagnostically highly sensitive) symptom for individuals in high-risk states for PGD, although it has only moderate specificity (i.e., its absence does not necessarily indicate individuals experiencing normative grief). Nonetheless, a culture-sensitive approach to psychopathology should consider the cultural differences in the centrality of this symptom group. More research is needed to better understand the role of yearning and its determinants across world regions.

Prolonged grief disorder symptomology in three African countries: A network analysis and comparison

Background

Bereavement is a globally prevalent life stressor, but in some instances, it may be followed by a persistent condition of grief and distress, codified within the 11th edition of the International Classification of Diseases (ICD-11) as prolonged grief disorder (PGD). Network analysis provides a valuable framework for understanding psychological disorders at a nuanced symptom-based level.

Aim

This study novelly explores the network structure of ICD-11 PGD symptomology in a non-Western sample and assesses the replication of this across three African country sub-samples in these data.

Methodology

Network models were estimated using the "Inventory of Complicated Grief-Revised" in a sample of trauma-exposed individuals who experienced bereavement throughout life (N = 1,554) from three African countries (Ghana, n = 290; Kenya, n = 619; Nigeria, n = 645). These networks were statistically evaluated using the network comparison test.

Results

It was found that "Feelings of Loss" and "Difficulty moving on" were the most central symptoms in the combined sample network. These findings were largely consistent for the Ghana and Nigeria sub-samples, however, network structure differences were noted in the Kenya sub-sample.

Conclusion

The identified PGD network highlights particular indicators and associations across three African samples. Implications for the assessment and treatment of PGD in these cultural contexts warrant consideration.

Looking back and moving forward: dimensions of coping flexibility divergently predict long-term bereavement outcomes

BACKGROUND AND OBJECTIVES

Bereavement is a serious public health concern. Some people suffer prolonged and debilitating functional impairment after the death of a loved one. Evidence suggests that flexibility in coping approaches predicts resilience after stressful life events, but its long-term effects after the unique experience of bereavement are unknown. Which strategies of coping flexibility predict better-or worse-adjustment over time for bereaved people and at what times?

DESIGN AND METHODS

The present study used path analyses to investigate longitudinal effects of forward-focus and loss-focus coping strategies on symptoms of persistent complex bereavement disorder (PCBD), depression, and posttraumatic stress disorder in a spousally bereaved adult sample (N = 248) at three time-points after the loss (∼3 months, ∼14 months, and ∼25 months).

RESULTS

Forward-focus coping demonstrated adaptive utility overall, with sooner effects on PCBD than on depression. By contrast, loss-focus coping demonstrated a delayed-onset, maladaptive pattern.

CONCLUSIONS

The findings contribute to the coping flexibility literature by suggesting that the adaptiveness or maladaptiveness of different coping strategies may depend on the context that requires coping. In particular, forward-focus coping may be substantially more advantageous than loss-focus coping in the context of bereavement. Implications, limitations, and future research directions are discussed.

Measurement and assessment of grief in a large international sample

BACKGROUND

In 2022, the International Classification of Diseases (ICD-11) and an update of the Diagnostic Statistical Manual of Mental Disorders (DSM 5 TR) were released for implementation worldwide and now include the new Prolonged Grief Disorder (PGD). The newest definition of PGD is based on robust clinical research from the Global North yet until now has not been tested for global applicability.

METHODS

The current study assesses the new PGD ICD-11 criteria in a large international sample of 1393 bereaved adults. The majority of the sample was included from the USΑ. Additionally, we conduct a sub-sample analysis to evaluate the psychometric properties, probable caseness of PGD, and differences in network structure across three regions of residency (USA, Greece-Cyprus, Turkey-Iran).

RESULTS

The psychometric validity and reliability of the 33-item International Prolonged Grief Disorder Scale (IPGDS) were confirmed across the whole sample and for each regional group. Using the strict diagnostic algorithm, the probable caseness for PGD for the whole sample was 3.6 %. Probable caseness was highest for the Greece-Cyprus group (6.9 %) followed by Turkey-Iran (3.2 %) and the USA (2.8 %). Finally, the network structure of the IPGDS standard items and cultural supplement items (total of 33 items) confirmed the strong connection between central items of PGD, and revealed unique network connections within the regional groups.

LIMITATIONS

Future research is encouraged to include larger sample sizes and a more systematic assessment of culture.

CONCLUSION

Overall, our findings confirm the global applicability of the new ICD-11 PGD disorder definition as evaluated through the newly developed IPGDS. This scale includes culturally sensitive grief symptoms that may improve clinical precision and decision-making.

An exploration of gender and prolonged grief symptoms using network analysis

BACKGROUND

Gender has been proposed as a potentially important predictor of bereavement outcomes. The majority of research in the field has explored this issue by examining gender differences in global grief severity. Findings have been mixed. In this study, we explore potential gender differences in grief using network analysis. This approach examines how individual symptoms relate to and reinforce each other, and so offers potential to shed light on novel aspects of grief expression across genders.

METHOD

Graphical lasso networks were constructed using self-report data from 839 spousally bereaved older participants (584 female, 255 male) collected at 2- and 11- months post-bereavement. Edge strength, node strength and global network strength were compared to identify similarities and differences between gender networks across time.

RESULTS

At both time points, the strongest connection for both genders was from yearning to pangs of grief. Yearning, pangs of grief, acceptance, bitterness and shock were prominent nodes at time 1. Numbness and meaninglessness emerged as prominent nodes at time 2. Males and females differed in the relative importance of shock at time 1, and the female network had greater overall strength than the male network at time 2.

CONCLUSIONS

This study identified many similarities and few differences in the relationships between prolonged grief symptoms for males and females. Findings suggest that future studies should examine alternate sources of variation in grief outcomes. Limitations are discussed.

Does Post-Traumatic Growth Follow Parental Death in Adulthood? An Empirical Investigation

This study looked at the loss of a parent in adulthood and whether this was followed by post-traumatic growth? Participants, 100 bereaved adults, from Pakistan and England, lost parents in the last 10 years. They completed three questionnaires. The study hypotheses were, first, that participants whose bereavement occurred more than five years ago would show significantly higher levels of post-traumatic growth. Second, participants with higher levels of post-traumatic growth would experience significantly higher grief scores. Thirdly, participants with higher levels of post-traumatic growth would show significantly higher levels of coping skills. Two hypotheses were rejected, only one received partial support. Yet, levels of post-traumatic growth were high in this sample. Post-traumatic growth does not follow every bereavement. The authors provide autoethnographic material to challenge this. Circumstances surrounding bereavement during the Covid-19 pandemic, are more likely to lead to increases in complicated grief reactions, rather than post-traumatic growth.

Is it acceptable and feasible to measure prolonged grief disorder symptoms in daily life using experience sampling methodology?

INTRODUCTION

Current grief research is dominated by cross-sectional studies assessing prolonged grief disorder (PGD) symptoms retrospectively. Examining grief in daily life, using Experience Sampling Methodology (ESM), may advance the field. Because of the lack of ESM-research on PGD, we evaluated the acceptability and feasibility of assessing PGD symptoms in daily life of bereaved people.

MATERIALS AND METHODS

ESM-items assessing PGD symptoms were developed using cognitive interviewing with five ESM/grief experts. Eighty bereaved adults completed these ESM-items five times a day for two weeks. Before and after this ESM-phase, interviews were administered assessing PGD retrospectively (using the Traumatic Grief Inventory-Clinical Administered). t-tests were performed comparing symptom severity of aggregated moment-to-moment recall (using ESM-items) with retrospective recall (based on interviews) of PGD symptoms. Acceptability of participating in ESM-research (assessed with the Reactions to Research Participation Questionnaire) was examined using descriptive statistics. Feasibility was evaluated by reporting compliance and retention rates.

RESULTS

Minor changes were made to the ESM-items based on expert interviews. Average levels of aggregated moment-to-moment recall of the symptoms "yearning" (d = -1.04), "preoccupation with the deceased" (d = -0.91), "marked sense of disbelief" (d = -0.43), and "intense loneliness" (d = -0.28) were lower compared with retrospective recalling these symptoms. On average, bereaved people were neutral about personal benefits gained through participation in this EMS-study. They indicated that participation did not raise emotional reactions. Compliance and retention rates were 60% and 65%, respectively.

DISCUSSION

Our findings indicate that whereas compliance and retention is challenging, using ESM to study PGD symptoms in daily life might be useful. Nevertheless, more research is needed.

The course of symptoms in the first 27 months following bereavement: A latent trajectory analysis of prolonged grief, posttraumatic stress, and depression

BACKGROUND

Much remains unknown about the course of grief in the early months following bereavement, including the prevalence and timing of a recovery trajectory, whether specific symptoms mark a failure to recover, and the co-occurrence of chronic prolonged grief (PG), posttraumatic stress (PTS) and depression symptoms.

METHODS

Two hundred fifty-nine participants completed PG, PTS and depression questionnaires up to eleven times every six weeks during the two years post-bereavement. We used Latent Class Growth Mixture Modeling (LCGMM) to identify subgroups of bereaved individuals sharing similar trajectories for each disorder. We used repeated measures ANOVA to evaluate differences in individual symptoms between trajectories. Finally, we investigated to what extent chronic trajectories of these three disorders co-occurred.

RESULTS

Three trajectories of PG symptoms emerged: resilient (66.4%), chronic (25.1%) and acute recovery (8.4%). The overall severity and symptom profile of the acute recovery group were indistinguishable from that of the chronic group through 6 months post-bereavement, followed by reduction in PG from 6 to 18 months post-bereavement. Chronic PTS in the first-year post-bereavement tended to co-occur with chronic PG and/or chronic depression.

CONCLUSIONS

Twenty five percent of those with initial elevations in grief recovered in the period of 6 to 12 months post-bereavement. These findings highlight the clinical importance of severe grief in the initial months following loss, but also suggests caution in diagnosing a grief disorder within the first-year post-bereavement.

Network analysis of PGD, PTSD and insomnia symptoms in Chinese shidu parents with PGD

Background

Chinese shidu parents (bereaved parents over the age of 49 who have lost their only child) are potentially at a high risk of prolonged grief disorder (PGD), posttraumatic stress disorder (PTSD) and insomnia.

Objective

The current study aimed to estimate three network models in 310 shidu parents who met the ICD-11 criteria for PGD: (1) a PGD network to identify central symptoms; (2) a comorbidity network to explore bridge symptoms between PGD and PTSD; (3) a comorbidity network to examine the associations between PGD and insomnia symptoms.

Methods

The R-packages bootnet, qgraph and networktools were used to investigate the structure of network models and centrality indices of symptoms. In addition, robustness and significance analyses for the edge weights and the order of centrality were performed.

Results

Emotional pain and numbness emerged as the most central symptoms in the PGD network. In the PGD-PTSD comorbidity network, the highest bridge strength symptoms were inability to trust others (PGD) and feeling upset (PTSD). Inability to trust others (PGD), avoidance (PGD), and impairment of life quality (insomnia) were possible bridge symptoms connecting PGD and insomnia.

Conclusions

Reducing emotional pain and numbness may be a viable target in PGD interventions for shidu parents. Additionally, findings suggest that future studies could examine the role of inability to trust others and avoidance in PGD comorbidities.

HIGHLIGHTS

• Emotional pain and numbness were the most influential symptoms in shidu parents with PGD. The role of PGD symptoms of inability to trust others and avoidance in the comorbidities of PGD with PTSD and insomnia might be worthy of further study.

The causal systems approach to prolonged grief: Recent developments and future directions

The network theory of prolonged grief posits that causal interactions among symptoms of prolonged grief play a significant role in their coherence and persistence as a syndrome. Drawing on recent developments in the broader network approach to psychopathology, we argue that advancing our understanding of the causal system that gives rise to prolonged grief will require that we (a) strengthen our assessment of each component of the grief syndrome, (b) investigate intra-individual relationships among grief components as they evolve over time within individuals, (c) incorporate biological and social components into network studies of grief, and (d) generate formal theories that posit precisely how these biological, psychological, and social components interact with one another to give rise to prolonged grief disorder.

The role of experiential avoidance in the relationship between traumatic distress and yearning in sudden and unexpected bereavement

BACKGROUND

Distressing preoccupation with the circumstances of the death, experiential avoidance, and yearning often manifest in pathological forms of grief following the sudden or unexpected death of a loved one. Traumatic distress-the emotional distress linked to circumstances or reminders of a death-often leads to avoidance behaviors, whereas yearning has been conceptualized as an emotional state which leads to proximity-seeking behaviors following bereavement. A gap exists in the literature explaining how these variables may interact and perpetuate one another.

AIMS

The present study aims to examine the role of experiential avoidance in the relationship between traumatic distress and yearning in a sample of suddenly and unexpectedly bereaved young adults. Results suggest that the association between traumatic distress and yearning may be partially mediated by experiential avoidance. Implications of these findings for theoretical models of grief and yearning are discussed.

MATERIALS & METHODS

Data include a sample of 606 bereaved young adults (Mage = 21.25; 77.4% female) who participated in a larger, online survey study conducted at two universities in the United States exploring the prevalence of trauma exposure in college students.

RESULTS

Mediation analysis demonstrated experiential avoidance as partially mediating the relationship between traumatic distress and yearning (ab = .21, SE = .10, 95% CI [.02, .40]) when controlling for presence at the scene of death or injury. This indirect effect accounted for 11.67% of the total effect. An additional moderated mediation analysis indicated this indirect effect was present across all levels of prolonged grief disorder (PGD) symptom severity.

DISCUSSION

Results indicate that the association between traumatic distress and yearning may be partially mediated by experiential avoidance across all levels of PGD symptom severity.

CONCLUSION

Findings suggest that bereaved individuals experiencing recurrent, death-related intrusive thoughts, imagery, and/or other memories related to the circumstances of the death may be more likely to experience intense yearning for the deceased in part due to attempts to avoid painful internal experiences associated with such cues.

Machine yearning: How advances in computational methods lead to new insights about reactions to loss

The loss of a loved one is a potentially traumatic event that can result in disparate outcomes and symptom patterns. Machine learning methods offer computational tools to probe this heterogeneity and understand grief psychopathology in its complexity. In this article, we examine the latest contributions to the scientific study of bereavement reactions garnered through the use of computational methods. We focus on findings originating from trajectory modeling studies, as well as the recent insights originating from the network analysis of prolonged grief symptoms. We also discuss applications of artificial intelligence for the accurate identification of major depression and post-traumatic stress, as examples for their potential applications to the study of loss reactions.

Ethnic group and social support contribution to posttraumatic growth after sudden spousal loss among Jewish, Muslim, and Druze widows in Israel

This study aimed to examine the contribution of ethnic group status and social support to posttraumatic growth (PTG) among widows after sudden spousal loss. Participants included 184 widows from three ethnic groups: 59 (32.3%) Jewish, 58 (31.7%) Muslim, and 66 (36%) Druze. Information was gathered via a demographic questionnaire, PTG Inventory, and Multidimensional Scale of Perceived Social Support. Analysis of covariance was used to test ethnic group status differences in social support, controlling for demographic variables. Hierarchical linear models were used to assess groups differences in the study outcome variables. The results showed that the PTG total score was higher for Jewish widows than for Muslim and Druze widows, with a null difference between the latter two, and social support contributed to increased PTG among Jewish widows more than among Muslim and Druze widows, with no significant association between social support and PTG among Druze widows. The highest PTG levels were observed among widows from modern individualistic cultural backgrounds, compared with traditional collectivist, cultural backgrounds after sudden spousal death. The social support system may be a pathway to enhance PTG among widows in traditional collectivist societies.

A scoping research literature review to map the evidence on grief triggers

Grief is understandably severe in the first days, if not weeks or months, following the death of a beloved person. Unless the mourner develops complicated grief, which is prolonged severe and impactful grief, the initial acute grief lessens in severity over time, although waves of significant grief will still occur with grief triggers. A scoping research literature review was undertaken in early 2021 to determine how often grief triggers occur, what the most common grief triggers are, the impact of triggered grief, and what can be done (by those not diagnosed with complicated grief) to manage grief triggers and mitigate the effect of them. Nine academic library databases were searched for English-language research reports using the keywords "grief trigger(s)" and "research": CINAHL, Directory of Open Access (online) Journals, Humanities Index, JSTOR, Medline (Ovid), Periodicals Index Online, PsychArticles, Scopus, and Web of Science. Six research papers relevant for review were published in the last two decades, with some evidence gained on how often grief triggers occur, what constitutes a grief trigger, and the impact of grief triggers. Major gaps in evidence were revealed, despite grief triggers being identified as a major consideration for grief in general and for grief recovery specifically.

Prolonged Grief Disorder: Course, Diagnosis, Assessment, and Treatment

Losing a loved one is one of life's greatest stressors. Although most bereaved individuals navigate through a period of intense acute grief that lessens with time, approximately 10% will develop a prolonged grief condition. This review provides an overview of the course of grief and describes risk factors for developing prolonged grief disorder. The evolution of the prolonged grief disorder diagnosis, including the latest criteria sets for ICD-11 and DSM-5, as well as common comorbid conditions and differential diagnosis are discussed. Clinically useful self-report and clinician-rated measures for assessing symptom constructs and overall prolonged grief disorder severity, evidence-based psychotherapies (such as complicated grief treatment), as well as evidence about pharmacologic approaches are presented. Finally, the authors discuss important future directions, including a potential increase in prolonged grief disorder cases due to the COVID-19 pandemic.

Ecological Grief as a Response to Environmental Change: A Mental Health Risk or Functional Response?

The perception of the impact of climate change on the environment is becoming a lived experience for more and more people. Several new terms for climate change-induced distress have been introduced to describe the long-term emotional consequences of anticipated or actual environmental changes, with ecological grief as a prime example. The mourning of the loss of ecosystems, landscapes, species and ways of life is likely to become a more frequent experience around the world. However, there is a lack of conceptual clarity and systematic research efforts with regard to such ecological grief. This perspective article introduces the concept of ecological grief and contextualizes it within the field of bereavement. We provide a case description of a mountaineer in Central Europe dealing with ecological grief. We introduce ways by which ecological grief may pose a mental health risk and/or motivate environmental behavior and delineate aspects by which it can be differentiated from related concepts of solastalgia and eco-anxiety. In conclusion, we offer a systematic agenda for future research that is embedded in the context of disaster mental health and bereavement research.

Prevalence and predictors of prolonged grief symptoms among those bereaved from a drug-related death in a convenience sample of Norwegian parents: A cross-sectional study

Drug-death bereaved parents are at risk of high levels of prolonged grief (PG) symptoms. We included 93 Norwegian drug-death bereaved parents in a cross-sectional survey and aimed to explain PG symptoms. High levels of PG symptoms (M = 30.69) were identified. Low level of self-efficacy and withdrawal from others were the most strongly associated with high levels of grief symptoms (p < .001). However, contrary to our expectations, social support, gender, employment, demanding life situations, and perceived proximity did not correlate significantly to PG symptoms. Our findings can enhance individual follow-up of drug-death bereaved parents.

Cross-cultural generalizability of the ICD-11 PGD symptom network: Identification of central symptoms and culturally specific items across German-speaking and Chinese bereaved

BACKGROUND

Prolonged grief disorder (PGD) is a newcomer to psychopathology and the new ICD-11 diagnostic criteria are conceptualized with an eye towards global applicability. Yet, previous network studies have not used official ICD-11 criteria nor tested whether network structures generalize across cultural groups even though much current research relies on ICD-11 PGD criteria.

METHODS

To overcome these limitations, the present study used data from 539 German-speaking (n = 214) and Chinese (n = 325) bereaved individuals to investigate similarities and differences in network structures of ICD-11 PGD criteria. In addition, network structures were investigated for an expanded supplementary questionnaire of culturally-bound grief symptoms hypothesized to be of relevance in each cultural context.

RESULTS

Results suggested both similarities and differences in network structures between the two samples. Across cultural groups, intense feelings of sorrow and inability to experience joy or satisfaction since the death emerged as most central symptoms. Compared to the standard PGD network, the expanded network showed a better average predictability for Chinese participants, but no improvement for the German-speaking context. Unhealthy behavior change was the most central symptom for Chinese bereaved when additional grief symptoms were included.

CONCLUSIONS

Results of the present study suggest there are culturally-bound symptoms of grief which are not included in the current ICD-11 PGD criteria. These findings provide areas of special clinical attention concerning screening and treatment and present a first step towards a more cultural-sensitive understanding of grief.

CLINICAL TRIALS

NCT03568955.

Inevitable Loss and Prolonged Grief in Police Work: An Unexplored Topic

The present manuscript presents foundational constructs related to death and loss (i.e., grief, bereavement, prolonged grief) providing empirical findings from recent research on the impact of death and loss on police officers’ health, behavior, and overall functioning. Police officers are routinely exposed to death. In many instances, officers’ contact with decedents includes, among others, victims of accidents, catastrophes, or violent crimes and witnessing the intense emotional suffering of relatives of the deceased. Additionally, it is not uncommon for officers to experience the loss of fellow officers from on-duty deaths and permanent, career-ending injuries. Simultaneously, like everyone, police officers have to cope with deaths of loved ones in their personal lives. The result is that officers’ health and well-being are likely compromised because of the systematic exposure to on- and off-duty deaths. In this perspective paper, death and loss in law enforcement are explored in an attempt to raise awareness and increase attention to this area of police work. In addition, the authors list a number of prophylactic intervention strategies that would support officers cope with the impact of loss and death and promote their own resilience.

Hope, Loneliness and Sense of Coherence among Bereaved Parents

Coping with the loss of a child is a challenging and difficult experience that disrupts the lives of the surviving parents and the fabric of the family. Our goal is to identify the factors that help bereaved parents cope with this loss and introduce hope and future perspectives into their lives. Our sample consisted of 81 parents (30 fathers and 51 mothers), who completed questionnaires on the following topics: family climate, loneliness, sense of coherence and hope. In addition, interviews were conducted with six parents to further clarify the quantitative results. A moderated mediation model revealed that increased levels of loneliness among the parents predicted lower levels of hope. However, their emotional resources in terms of their sense of coherence mediated this relationship. In addition, the number of years since the loss moderated the negative relationship between loneliness and the parents’ emotional resources. It can be concluded that the negative impact of loneliness on parents’ sense of coherence declined over time. The interviews conducted extend the understanding of these results, as parents described their ability to continue with their lives and identified their goals in terms of the hope theory, alongside their ongoing pain. Finally, the therapeutic implications of the results we obtained are discussed.

Deepening the understanding of complicated grief among Chinese older adults: A network approach

Instead of understanding symptoms in a way where a latent cause exists and symptoms serve as its indicators, the network approach enables an innovative comprehension on psychological disorders that focuses on causal interactions. There is need to update the knowledge in this direction in Chinese context. This study strives to apply network approach to deepening the understanding of complicated grief (CG) among older adults in rural China. A sample of older participants (N = 352) who experienced spousal bereavement living in Zhejiang Province of China were administrated with face-to-face interviews. Networks analysis was conducted to realize the object of this study. The 19-item ICG network revealed that symptoms were both positively and negatively connected within the network. The most three central symptoms were "feeling longing for the person who died" and "memories of the dead", and feeling lonely". Edge-weights accuracy and centrality stability were tested in order to remind carefulness when interpreting the results. This study demonstrates the utility of a network approach in deepening the understanding of the structure of CG symptoms among Chinese older people. Strengths and limitations, as well as implications for informing the assessment and treatment of this disorder, were discussed.

A Network Approach to Understanding Quality of Life Impairments in Prolonged Grief Disorder

Prolonged grief (PGD) is a potentially debilitating consequence of bereavement that is experienced by 7%-10% of bereaved individuals. In recent years, PGD has been the focus of increasing interest as it is associated with a range of significant negative physical and mental health outcomes. To date, however, there is little understanding of how impairment is associated with individual PGD symptom interactions. Network analysis is an innovative statistical approach that has been productively applied to examine how symptoms of psychopathology influence and reinforce each other. In this study, we examined the association between PGD symptoms and quality of life (QoL) impairments. Data from 215 bereaved individuals were used to construct networks comprising PGD symptoms and different facets of QoL. The results showed that PGD symptoms of meaninglessness and role confusion were linked with reduced psychological QoL, trust difficulties were linked with reduced social QoL, and bitterness was linked with reduced environmental QoL. These results are consistent with models that highlight the importance of self-identity and loss of meaning in PGD. By elucidating pathways of dysfunction, these findings offer clinical implications that may help to improve outcomes for persons with PGD.

Commentary on evidence in support of a grief-related condition as a DSM diagnosis

The death of a loved one is one of life's greatest stressors. Most bereaved individuals experience a period of acute grief that diminishes in intensity as they adapt to the changes brought about by their loss. Over the past four decades, a growing body of research has focused on a form of prolonged grief that is painful and impairing. There is a substantial and growing evidence base that supports the validity and significance of a grief-related disorder, including the clinical value of being able to diagnose it and provide effective targeted treatment. ICD-11 will include a new diagnosis of prolonged grief disorder (PGD). DSM-5 called this condition persistent complex bereavement disorder (PCBD) and included it in Section III, signaling agreement that a diagnosis is warranted while further research is needed to determine the optimal criteria. Given the remaining uncertainties, reading this literature can be confusing. There is inconsistency in naming the condition (including complicated grief as well as PGD and PCBD) and lack of uniformity in identifying it, with respect to the optimal threshold and timeframe for distinguishing it from normal grief. As an introductory commentary for this Depression and Anxiety special edition on this form of grief, the authors discuss the history, commonalities, and key areas of variability in identifying this condition. We review the state of diagnostic criteria for DSM-5 and the current ICD-11 diagnostic guideline, highlighting the clinical relevance of making this diagnosis.

Trajectories of grief: Comparing symptoms from the DSM-5 and ICD-11 diagnoses

BACKGROUND

Diagnostic criteria for prolonged grief have appeared in the Diagnostic and Statistical Manual of Mental Disorders ( DSM-5; persistent complex bereavement disorder, PCBD) and in the ICD-11 (prolonged grief disorder, PGD), and the question of which diagnosis is most clinically useful has been hotly debated. This study provides the first longitudinal comparison of PCBD and PGD in their ability to capture symptom change over time and their relation to long-term outcomes.

METHODS

A community sample was recruited consisting of 282 individuals who had recently lost a spouse. Structured clinical interviews were conducted at 3, 14, and 25 months postloss for symptoms corresponding to PCBD and PGD criteria. Outcomes at 25 months included PCBD and PGD caseness, depression, global functioning, and interviewer ratings of participant suffering.

RESULTS

PCBD and PGD trajectories determined by growth mixture modeling, each captured three primary outcomes: resilience, moderate-improving symptoms, and prolonged-stable symptoms. The PGD solution also identified trajectories of increasing and decreasing distress: prolonged-worsening and acute-recovering symptoms. Prediction of 25-month outcomes indicated differences conforming to the severity of PGD symptoms, and the prolonged-worsening trajectory was associated with the worst adjustment.

CONCLUSIONS

PGD symptoms were more differentiated, better-captured psychopathology, and other outcomes and were more sensitive to change over time compared to PCBD.

Symptomatology following loss and trauma: Latent class and network analyses of prolonged grief disorder, posttraumatic stress disorder, and depression in a treatment-seeking trauma-exposed sample

BACKGROUND

Although bereavement is likely a common stressor among patients referred to a psychotrauma clinic, no study has yet examined the co-occurrence and relationships between symptoms of prolonged grief disorder (PGD), posttraumatic stress disorder (PTSD), and major depressive disorder symptoms in this population.

METHOD

In a sample of patients seeking treatment following psychological trauma (n = 458), we used latent class analysis to identify classes of patients sharing the same profile of PGD, PTSD, and depression symptoms. We then used network analysis to investigate the relationships among these symptoms and with loss-related variables.

RESULTS

Most participants (65%) were members of a class that exhibited elevated endorsement of PGD symptoms. PGD, PTSD, and depression symptoms hung together as highly overlapping but distinguishable communities of symptoms. Symptoms related to social isolation and diminished sense of self bridged these communities. Violent loss was associated with more difficulty accepting the loss. The loss of close kin was most strongly associated with difficulty moving on in life.

CONCLUSIONS

PGD symptoms are common in trauma-exposed bereaved adults and closely associated with symptoms of PTSD and depression, illustrating the importance of assessing bereavement and PGD symptoms in those seeking treatment following trauma.

The Study of Psychopathology from the Network Analysis Perspective: A Systematic Review

BACKGROUND

Network analysis (NA) is an analytical tool that allows one to explore the map of connections and eventual dynamic influences among symptoms and other elements of mental disorders. In recent years, the use of NA in psychopathology has rapidly grown, which calls for a systematic and critical analysis of its clinical utility.

METHODS

Following PRISMA guidelines, a systematic review of published empirical studies applying NA in psychopathology, between 2010 and 2017, was conducted. We included the literature published in PubMed and PsycINFO using as keywords any combination of "network analysis" with the terms "anxiety," "affective disorders," "depression," "schizophrenia," "psychosis," "personality disorders," "substance abuse" and "psychopathology."

RESULTS

The review showed that NA has been applied in a plethora of mental disorders in adults (i.e., 13 studies on anxiety disorders; 19 on mood disorders; 7 on psychosis; 1 on substance abuse; 1 on borderline personality disorder; 18 on the association of symptoms between disorders), and 6 on childhood and adolescence.

CONCLUSIONS

A critical examination of the results of each study suggests that NA helps to identify, in an innovative way, important aspects of psychopathology like the centrality of the symptoms in a given disorder as well as the mutual dynamics among symptoms. Yet, despite these promising results, the clinical utility of NA is still uncertain as there are important limitations on the analytic procedures (e.g., reliability of indices), the type of data included (e.g., typically restricted to secondary analysis of already published data), and ultimately, the psychometric and clinical validity of the results.

Longitudinal Examination of Emotional Functioning in Older Adults After Spousal Bereavement

Objectives

This study examined trajectories of emotional functioning in three domains (depressive symptoms, emotional, and social loneliness) for individuals who experienced spousal bereavement and investigated cross-domain adaptation. We hypothesized that emotional difficulties after bereavement would be more detectable in emotional loneliness than depressive symptoms or social loneliness.

Methods

Using latent class growth analysis, we modeled changes in depressive symptoms, emotional loneliness, and social loneliness from 12 years pre- to 12 years post-bereavement on data from 686 older adults to identify trajectories indicating adaptive and maladaptive functioning in each domain.

Results

Most participants reported depressive symptoms below the clinically relevant threshold by showing a resilient (15.5%) or a slightly elevated (53.5%) trajectory post-bereavement. One third (31%) reported clinically relevant depressive symptoms. More than half of the sample reported emotional loneliness post-bereavement, varying form prolonged (17%), increasing and prolonged (28.3%), and chronically high (8.9%) levels. Remaining participants displayed resilience (13.5%) or recovery (32.3%). Social loneliness showed four trajectories: very low and resilient (43.3%), low and resilient (27.5%), increasing (20.2%), and chronically high (9%) levels. One third of participants maintained adaptive, whereas 12% displayed maladaptive, functioning across all domains post-bereavement.

Discussion

An increase in emotional loneliness was the most commonly observed change after spousal bereavement. This highlights the central role of emotional loneliness in depression after bereavement.

Symptoms of prolonged grief and posttraumatic stress following loss: A latent class analysis

OBJECTIVE

Individuals vary in how they respond to bereavement. Those who experience poor bereavement outcomes often report symptoms from more than one diagnostic category. This study sought to identify groups of individuals who share similar patterns of prolonged grief disorder and posttraumatic stress disorder symptoms to determine whether these profiles are differentially related to negative appraisals thought to contribute to prolonged grief disorder and posttraumatic stress disorder symptomatology.

METHODS

Participants were 185 bereaved adults. Latent class analysis was used to identify subgroups of individuals who showed similar patterns of co-occurrence of prolonged grief disorder and posttraumatic stress disorder symptoms. Multinomial regression was used to examine the extent to which appraisal domains and sociodemographic and loss factors predicted class membership.

RESULTS

Latent class analysis revealed three classes of participants: a low symptom group, a high prolonged grief disorder symptom group, and a high prolonged grief disorder and posttraumatic stress disorder symptom group. Membership of the prolonged grief disorder group and prolonged grief disorder and posttraumatic stress disorder group was predicted by higher mean negative self-related appraisals. Demographic and loss-related factors did not predict group membership.

CONCLUSION

These findings have implications for understanding co-occurrence of prolonged grief disorder and posttraumatic stress disorder symptoms following bereavement. Findings are consistent with theoretical models highlighting the importance of negative self-related beliefs in prolonged grief disorder.

Life after the loss: protocol for a Danish longitudinal follow-up study unfolding life and grief after the death of a child during pregnancy from gestational week 14, during birth or in the first 4 weeks of life

INTRODUCTION

After the death of a child during pregnancy, birth or in the neonatal period, parents often experience feelings of guilt, disenfranchisement, feelings of betrayal by one's own body and envy of others. Such bereavement results in high rates of distress: psychologically, emotionally, physiologically and existentially. These data are collected using a national, longitudinal cohort to assess grief in mothers and their partners after the death of a child during pregnancy, birth or in the neonatal period. Our aim is to achieve a general description of grief, emotional health, and existential values after pregnancy or perinatal death in a Danish population.

METHODS AND ANALYSIS

The cohort comprises mothers and their partners in Denmark who lost a child during pregnancy from gestational week 14, during birth or in the neonatal period (4 weeks post partum). We began data collection in 2015 and plan to continue until 2024. The aim is to include 5000 participants by 2024, generating the largest cohort in the field to date. Parents are invited to participate at the time of hospital discharge or via the Patient Associations homepage. Data are collected using web-based questionnaires distributed at 1-2, 7 and 13 months after the loss. Sociodemographic and obstetric variables are collected. Validated psychometric measures covering attachment, continuing bonds, post-traumatic stress, prolonged grief, perinatal grief and existential values were chosen to reach our aim.

ETHICS AND DISSEMINATION

The study was approved by The Danish National Data Protection Agency (no. 18/15684, 7 October 2014). The results will be disseminated in peer-reviewed and professional journals as well as in layman magazines, lectures and radio broadcasts.

Symptoms of persistent complex bereavement disorder, depression, and PTSD in a conjugally bereaved sample: a network analysis

BACKGROUND

Complicated and persistent grief reactions afflict approximately 10% of bereaved individuals and are associated with severe disruptions of functioning. These maladaptive patterns were defined in Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) as persistent complex bereavement disorder (PCBD), but its criteria remain debated. The condition has been studied using network analysis, showing potential for an improved understanding of PCBD. However, previous studies were limited to self-report and primarily originated from a single archival dataset. To overcome these limitations, we collected structured clinical interview data from a community sample of newly conjugally bereaved individuals (N = 305).

METHODS

Gaussian graphical models (GGM) were estimated from PCBD symptoms diagnosed at 3, 14, and 25 months after the loss. A directed acyclic graph (DAG) was generated from initial PCBD symptoms, and comorbidity networks with DSM-5 symptoms of major depressive disorder (MDD) and post-traumatic stress disorder (PTSD) were analyzed 1 year post-loss.

RESULTS

In the GGM, symptoms from the social/identity PCBD symptoms cluster (i.e. role confusion, meaninglessness, and loneliness) tended to be central in the network at all assessments. In the DAG, yearning activated a cascade of PCBD symptoms, suggesting how symptoms lead into psychopathological configurations. In the comorbidity networks, PCBD and depressive symptoms formed separate communities, while PTSD symptoms divided in heterogeneous clusters.

CONCLUSIONS

The network approach offered insights regarding the core symptoms of PCBD and the role of persistent yearnings. Findings are discussed regarding both clinical and theoretical implications that will serve as a step toward a more integrated understanding of PCBD.

Self-generated Unconscious Processing of Loss Linked to Less Severe Grieving

BACKGROUND

The intense loss processing that characterizes grieving may help people to adapt to the loss. However, empirical studies show that more conscious loss-related thinking and greater reactivity to reminders of the deceased correspond to poorer adaptation. These findings raise the possibility that loss processing that is unconscious rather than conscious and is self-generated rather than reactive may facilitate adaptation. Here, we used machine learning to detect a functional magnetic resonance imaging (fMRI) signature of self-generated unconscious loss processing that we hypothesized to correlate with lower grief severity.

METHODS

A total of 29 subjects bereaved within the past 14 months participated. Participants performed a modified Stroop fMRI task using deceased-related words. A machine-learning regression, trained on Stroop fMRI data, learned a neural pattern for deceased-related selective attention (d-SA), the allocation of attention to the deceased. Expression of this pattern was tracked during a subsequent sustained attention fMRI task interspersed with deceased-related thought probes (SART-PROBES). d-SA pattern expression during SART-PROBES blocks without reported thoughts of loss indicated self-generated unconscious loss processing. Grief severity was measured with the Inventory for Complicated Grief.

RESULTS

d-SA expression during SART-PROBES blocks without conscious deceased-related thinking correlated negatively with Inventory for Complicated Grief score (r₂₅ = -.711, p < .001, 95% confidence interval = -0.89 to -0.42), accounting for 50% of variance. This relationship remained significant independent of demographic correlates of Inventory for Complicated Grief (B₂₅ = -30, t = -2.64, p = .02, 95% confidence interval = -56.2 to -4.6). Unconscious d-SA pattern expression also correlated with activity in dorsolateral prefrontal cortex and temporal parietal junction during the SART-PROBES (voxel: p < .001, cluster: p < .05).

CONCLUSIONS

Self-generated unconscious loss processing correlated with reduced grief severity. This activity, supported by a cognitive social neural architecture, may advance adaptation to the loss.

Data Science in the Research Domain Criteria Era: Relevance of Machine Learning to the Study of Stress Pathology, Recovery, and Resilience

Diverse environmental and biological systems interact to influence individual differences in response to environmental stress. Understanding the nature of these complex relationships can enhance the development of methods to: (1) identify risk, (2) classify individuals as healthy or ill, (3) understand mechanisms of change, and (4) develop effective treatments. The Research Domain Criteria (RDoC) initiative provides a theoretical framework to understand health and illness as the product of multiple inter-related systems but does not provide a framework to characterize or statistically evaluate such complex relationships. Characterizing and statistically evaluating models that integrate multiple levels (e.g. synapses, genes, environmental factors) as they relate to outcomes that a free from prior diagnostic benchmarks represents a challenge requiring new computational tools that are capable to capture complex relationships and identify clinically relevant populations. In the current review, we will summarize machine learning methods that can achieve these goals.