Interpersonal trauma and hoarding: The mediating role of aggression

Unveiling common psychological characteristics of proneness to aggression and general psychopathology in a large community youth cohort

Elevated aggression in individuals with psychiatric disorders is frequently reported yet aggressive acts among people with mental illness are often intertwined with proneness to aggression and other risk factors. Evidence has suggested that both general psychopathology and proneness to aggression may share common psychological characteristics. This study aims to investigate the complex relationship between general psychopathology, proneness to aggression, and their contributing factors in community youth. Here, we first examined the association between proneness to aggression and the level of general psychopathology in 2184 community youths (male: 41.2%). To identify common characteristics, we trained machine learning models using LASSO based on 230 features covering sociodemographic, cognitive functions, lifestyle, well-being, and psychological characteristics to predict levels of general psychopathology and proneness to aggression. A subsequent Gaussian Graph Model (GGM) was fitted to understand the relationships between the general psychopathology, proneness to aggression, and selected features. We showed that proneness to aggression was associated with a higher level of general psychopathology (discovery: r = 0.56, 95% CI: [0.52-0.59]; holdout: r = 0.60, 95% CI: [0.54-0.65]). The LASSO model trained on the discovery dataset for general psychopathology was able to predict proneness to aggression in the holdout dataset with a moderate correlation coefficient of 0.606. Similarly, the model trained on the proneness to aggression in the discovery dataset was able to predict general psychopathology in the holdout dataset with a correlation coefficient of 0.717. These results suggest that there is substantial shared information between the two outcomes. The GGM model revealed that isolation and impulsivity factors were directly associated with both general psychopathology and proneness to aggression. These results revealed shared psychological characteristics of general psychopathology and proneness to aggression in a community sample of youths.

Interpersonal attachment, early family environment, and trauma in hoarding: A systematic review

The formation of intense emotional attachments to objects, difficulty parting with possessions, and the extreme accumulation of clutter are key features of Hoarding Disorder (HD). Although substantial literature implicates processes such as dysfunctional beliefs and maladaptive emotional cycles in HD, little is known about the vulnerability factors that lead to their development and hoarding symptomatology. The current review sought to systematically collate and integrate findings from studies investigating the relationship between hoarding symptoms and three proposed vulnerability factors: i) interpersonal attachment, ii) early family environment, and iii) traumatic or adverse life events. A comprehensive search of the databases PsycInfo, PubMed, and Scopus identified a total of 39 studies for inclusion. The results presented a complex pattern that supported the presence of relationships between insecure attachment, cold and controlling family experiences, and exposure to adverse life events with increased hoarding severity. However, the specificity of these factors to HD over other clinical groups remains unclear and findings are limited by the heterogenous and small number of studies. We conclude by discussing the clinical implications and limitations of these findings and propose new directions for future research.

Exposure to stressful and traumatic life events in hoarding: Comparison to clinical controls

BACKGROUND

Individuals with hoarding report stressful and traumatic life events at an elevated rate compared with those with obsessive-compulsive disorder and healthy controls, but have not been compared with other clinical groups. This study compared rates of traumatic life events between those with clinically significant hoarding, anxiety disorders, or posttraumatic stress disorder (PTSD), hypothesizing that rates would be higher in the hoarding and PTSD groups than the anxiety group.

METHODS

Rates of traumatic and stressful events were compared across groups.

RESULTS

All comparisons across groups on types of events were significant (partial-eta squared 0.051-0.162). The hoarding group endorsed significantly more crime-related events but similar rates of other events as compared to the PTSD and anxiety disorder groups.

CONCLUSION

These findings suggest that many stressful and traumatic life events are not uniquely elevated in hoarding when compared with other clinical populations.

Traumatic and stressful life events in hoarding: the role of loss and deprivation

BACKGROUND

Although past research shows hoarding to be associated with stressful life events involving loss and/or deprivation, the temporal relationship between the onset of symptoms and these events is not completely clear.

OBJECTIVES

In a cross-sectional online study, we examined the relationship between the number of events involving loss or deprivation before/simultaneously vs. after the onset of hoarding and various hoarding-related beliefs, such as emotional attachment to possessions, and symptom severity. Further, we examined whether perceived social support moderated the influence of these events on emotional attachment to objects.

METHODS

One hundred seventeen subjects with hoarding problems responded to a series of instruments to assess the history and timing of traumatic and stressful loss and/or deprivation in relation to the onset of hoarding, and self-report tools evaluating the severity of hoarding, beliefs/motivations, depression, anxiety, general distress, and perceived social support.

RESULTS

The number of events involving loss or deprivation occurring before hoarding was related to increased emotional attachment to possessions, whereas events happening after the onset of hoarding were related to increased concerns about memory as drivers of hoarding symptoms. Events happening before hoarding did not interact with perceived social support to influence emotional attachment to objects.

CONCLUSIONS

The timing of traumatic and stressful life events related to loss and deprivation is associated with different hoarding phenotypes, including beliefs/motivations for hoarding. If confirmed by longitudinal studies, these findings may be relevant for therapeutic and preventive measures.

A Biopsychosocial Approach to Understanding Panic Buying: Integrating Neurobiological, Attachment-Based, and Social-Anthropological Perspectives

The global COVID-19 pandemic has focused the attention of researchers, civil authority and the general public on the phenomenon of "panic buying," characterized by the excessive purchase of specific materials-particularly food and hygiene-related products-in anticipation of an expected shortage. This phenomenon has been well-documented in response to several natural and man-made disasters, but its global scope and severity in the context of COVID-19 are unprecedented. This response can negatively impact health, food security, and disease prevention efforts. Attempts to modify such behaviors are more likely to succeed if they are based on insights from both the biomedical and the social sciences. From a biological perspective, the phenomenological overlap between panic buying and psychological disorders such as hoarding disorder and compulsive buying raises the possibility of a shared neurobiological underpinning. Evolutionary models suggest that these behaviors represent an attempt to enhance individual and group survival in the face of a threatened scarcity of resources. These phenomena may be influenced by specific genetic variants which are also implicated in hoarding-related psychological disorders. From a psychological perspective, attachment theory provides a conceptual framework that serves as a bridge between prior life adversity, current deprivation, and an increased attachment to material objects. Such a framework is of relevance when considering panic buying during the COVID-19 pandemic, which has been associated with significant disruptions in attachment bonds. From a social-anthropological perspective, hoarding and related behaviors have been associated with social exclusion and rejection, as well a lack of social support. These risk factors have affected large sections of the general population in the context of the COVID-19 pandemic and the governmental responses to it. This perspective also emphasizes the symbolic significance of the hoarded objects themselves. In this paper, an attempt is made to integrate these three perspectives and thereby formulate a biopsychosocial model of panic buying in response to this global health crisis. The existing scientific literature on panic buying is examined in the light of this model. Finally, suggestions are proposed as to how this model might inform social strategies aimed at preventing or reducing panic buying.

An examination of the relationship between hoarding symptoms and hostility

Hoarding disorder (HD) is a persistent and severe psychiatric condition in which individuals are unable to discard possessions, which results in considerable clutter. Individuals who hoard often endorse interpersonal difficulties and social isolation. However, little research has examined mechanisms that may help to explain this relationship. One possible mechanism is hostility, which is characterized by increased sensitivity to real or perceived social threats. The current study examined the relationship between hoarding symptoms and hostility across two undergraduate samples. In study 1, unselected undergraduates (N = 195) were administered measures of hoarding symptoms, hostile interpretations, and depression and anxiety symptoms. Participants in study 2 (N = 117) were selected for reporting elevated hoarding symptoms. Study 2 participants were administered the same measures as in study 1, and were additionally randomized to an inclusion or exclusion condition in a social exclusion manipulation. Total hoarding symptoms and hostile interpretations were positively associated across both samples, even when controlling for depression and anxiety. Further, greater hoarding symptoms were associated with increased feelings of hostility in response to social exclusion in study 2. Results suggest that increased sensitivity to social threat may confer risk for hoarding. These findings add to a growing body of research implicating interpersonal factors in the development and maintenance of hoarding disorder.

Hoarding symptoms and workplace impairment

OBJECTIVES

A prior study found that over 50% of treatment-seeking individuals who hoard incur at least one psychiatric work impairment day (i.e., they are unable to work or are less effective at work due to poor mental health) each month. The aim of the current study was to assess work-related variables associated with workplace impairment in a non-treatment-seeking sample.

DESIGN

Cross-sectional. Self-report questionnaires were administered via Amazon's Mechanical Turk.

METHODS

One hundred and eighty-five employed individuals who reported elevated hoarding symptoms completed questionnaires regarding hoarding symptoms, work engagement, psychiatric work impairment, work control, attention and concentration difficulties at work, and quality of workplace relationships.

RESULTS

Greater workplace control and higher quality workplace relationships were associated with greater work engagement. Greater hoarding symptoms and attention difficulties at work were associated with more psychiatric work impairment days. Work engagement statistically mediated the association between the quality of workplace relationships and work impairment, though mediation was also significant when reversing the mediating and outcome variables.

CONCLUSIONS

Among a community sample of employed individuals, greater hoarding symptoms were associated with greater psychiatric work impairment. Work-related variables, such as co-worker relationships and attention difficulties, contributed additional variance above that accounted for by hoarding symptoms. There were significant associations between co-worker relationships, work engagement, and workplace impairment, though the direction of the mediation model is unclear. Future research should examine factors associated with unemployment in hoarding disorder.

PRACTITIONER POINTS

Clinicians should be aware that greater hoarding severity directly contributes to greater workplace impairment. Clinicians should consider prioritizing the reduction in clutter in living areas that impact one's daily activities and subsequent ability to attend work. Clinicians should assess and treat workplace impairment by helping individuals achieve greater control at work, developing higher quality interpersonal relationships, and improving their attentional abilities.