Predicting Nonsuicidal Self-Injury in Borderline Personality Disorder Using Ecological Momentary Assessment

Picturing self-harm: Investigating flash-forward mental imagery as a proximal and modifiable driver of non-suicidal self-injury

OBJECTIVES

Non-suicidal self-injury (NSSI) is theorized to be reinforced by its emotional consequences. Mental images of NSSI are commonly reported as occurring prior to NSSI. Based on the known functional properties of anticipatory mental imagery as an emotional and motivational amplifier, this study investigated whether NSSI mental imagery constitutes a proximal and dynamic mechanism underpinning NSSI risk.

METHOD

An intensive ecological momentary assessment (EMA) study was conducted to track the occurrence and characteristics of NSSI mental imagery alongside NSSI urge and behavior in naturalistic settings. A sample of N = 43 individuals aged 17 to 24 with a history of repetitive NSSI completed EMA surveys seven times a day for 14 days.

RESULTS

Mental preoccupation in the form of NSSI mental imagery-based flash-forwards to the actions, bodily sensations, and emotional benefits of NSSI was found to occur when NSSI urge was high but not when urge was low. Critically, objective cross-panel analyses showed that higher frequencies of NSSI imagery occurrence predicted greater future NSSI urge and increased likelihood of acting on urge, over and above current urge.

CONCLUSIONS

Mental imagery of NSSI is not simply an epiphenomenal by-product of NSSI urge and may constitute a dynamic and proximal novel intervention target.

How does emotional abuse affect adolescents' non-suicidal self-injury urges? A moderated chain mediation model

BACKGROUND

Studying non-suicidal self-injury (NSSI) among adolescents has high clinical significance. Its urges have been identified as a potential predictor of NSSI behavior and may serve as a crucial intervention target.

OBJECTIVE

This study uses a moderated chain mediation model to explore the relationship between emotional abuse and adolescent NSSI urges. Additionally, we examine the mediating roles of ego depletion and self-esteem and the moderating effect of resilience.

PARTICIPANTS AND SETTING

We recruited 1129 Chinese adolescents (age M = 16.68; SD = 0.78; 49.4 % men) from secondary vocational schools in China.

METHODS

We assessed emotional abuse, ego depletion, self-esteem, and NSSI urges in a longitudinal investigation across two time points (T1: March 2023, T2: June 2023).

RESULTS

After controlling for age, sex, NSSI urges and self-esteem at T1, our study validates a moderated chain mediation model and finds that the mediating effect via self-esteem is 0.026 (95%CI = [0.011,0.046]), and the chain mediating effect via ego depletion and self-esteem is 0.031 (95%CI = [0.022,0.045]), whereas the direct effect of emotional abuse T1 on NSSI urges T2 is not significant (DE = 0.082, 95%CI = [-0.002, 0.167]) and the mediating effect via ego depletion is also not significant (IE = -0.003, 95%CI = [-0.022, 0.015]). Resilience moderates the impact of emotional abuse on ego depletion (β = 0.09, p < 0.01).

CONCLUSIONS

These findings suggest that ego depletion and self-esteem are potential mechanisms related to emotional abuse and adolescents' NSSI urges, whereas resilience can play a moderating role in reducing ego depletion.

Distress tolerance and lifetime frequency of non-suicidal self-injury (NSSI): A systematic review and meta-analysis

NSSI has recently been recognized as a significant health issue given its documented association with psychopathology and across a broad spectrum of psychiatric disorders. It has been found that individuals experiencing heightened emotions, which is referred to as an emotional cascade, are more likely to engage in self-injury behaviour due to low levels of distress tolerance (DT). The current meta-analysis using PRISMA guidelines sought to quantify the strength of the association between DT and lifetime frequency of NSSI using 22 eligible studies (N = 14,588; F = 60.7%; age = 23.35 ± 7.30), mainly from the United States. The correlation between emotional DT and NSSI was a small negative correlation (r = -.14), and it was non-significant for behavioural DT and NSSI (r = .02). Also, the effect-size was significant for studies that used interview-based measure of NSSI (r = -.24), and it was non-significant when self-report measures of NSSI (r = -.11) utilized. The association between DT and NSSI was significant and negative across the general population (r = -.47), university students (r = -.17), and inpatients (r = -.27); surprisingly, it was significant and positive among adolescents or high school students (r = .17). The observed effect-sizes were independent of publication year, mean age and its standard deviation, study quality, female proportion, DT, NSSI measures reliability, and clinical status. Future studies on NSSI should consider DT as a spectrum from distress intolerance to distress over-tolerance, given that it seems it has different functions when different samples (e.g., adolescents) are studied.

Childhood temperament as a predictor of adolescent nonsuicidal self-injury

Previous cross-sectional work has consistently found associations between neuroticism and impulsivity and nonsuicidal self-injury (NSSI). However, there are few longitudinal studies of personality risk factors for NSSI. In this study, we examined associations between individual differences in temperament at age 3 and NSSI from ages 9 to 15. At age 3, 559 preschool-aged children (54% male; Mage = 42.2 months [SD = 3.10]) completed laboratory assessments of temperament. Parents also completed questionnaires about their child's temperament. Children completed a diagnostic interview assessing NSSI engagement at ages 9, 12, and 15. By the age 15 assessment, 12.4% of adolescents reported engaging in NSSI. In univariate models, we found that higher levels of observed sadness and maternal-reported sadness and anger were associated with increased risk for NSSI. In multivariate models, female sex and maternal-reported anger were significantly associated with greater likelihood of NSSI. Laboratory observed sadness and impulsivity were associated with a higher likelihood of NSSI. This work extends the literature on personality risk factors associated with NSSI by finding longitudinal associations between early childhood negative affect and later NSSI engagement during adolescence.

Symptomatic, Alexithymic, and Suicidality-Related Features in Groups of Adolescent Self-Harmers: A Case-Control Study

Non-suicidal self-injury (NSSI) is an increasing phenomenon among both clinical and nonclinical adolescent groups and is associated with several psychopathological symptoms, in addition to being one of the main risk factors for suicidality. Nevertheless, differences between clinical and nonclinical samples of self-harmers in symptom dimensions, alexithymia, suicidality, and NSSI-related variables are still scarcely investigated. The current study aimed to fill this gap by enrolling a sample of Italian girls (age range: 12-19 years) that included 63 self-harmers admitted to mental health outpatient services (clinical group), 44 self-harmers without admission to mental health services (subclinical group), and 231 individuals without an NSSI history (control group). Questionnaires investigating psychopathological symptoms, alexithymia, and NSSI-related variables were administered. The results highlighted that all symptom-related variables and alexithymic traits were more severe in the NSSI groups than in the control group; in particular, self-depreciation, anxiety, psychoticism, and pathological interpersonal relationships were distinguished between the clinical and subclinical groups. Compared to the subclinical group, the clinical group was characterized by higher NSSI frequency, NSSI disclosure, self-punishment as the main reason for engagement in NSSI, and suicidal ideation. These findings were then discussed in terms of clinical practice and primary and secondary prevention in the adolescent population.

The relationship between emptiness and suicide and self-injury urges in borderline personality disorder

INTRODUCTION

Suicide and self-injury (SSI) are pervasive among individuals with borderline personality disorder (BPD), yet little research has examined factors that increase SSI urges among those with BPD. Emptiness is a diagnostic criterion of BPD that is associated with SSI behaviors, but its impact on SSI urges in BPD is poorly understood. This study investigates the association between emptiness and SSI urges at baseline and in response to a stressor (i.e., reactivity) among individuals with BPD.

METHODS

Forty individuals with BPD participated in an experimental procedure where they rated their degree of emptiness and SSI urges at baseline and in response to an interpersonal stressor. Generalized estimating equations tested whether emptiness predicts baseline SSI urges and SSI urge reactivity.

RESULTS

Higher emptiness predicted higher baseline suicide urges (B = 0.006, SE = 0.002, p < 0.001), but not baseline self-injury urges (p = 0.081). Emptiness did not significantly predict suicide urge reactivity (p = 0.731) nor self-injury urge reactivity (p = 0.446).

CONCLUSION

Assessing and targeting emptiness may facilitate the reduction of suicide urges in BPD. Future research should investigate treatment strategies for reducing SSI risk among individuals with BPD via targeting emptiness.

A systematic review of the relationship between momentary emotional states and nonsuicidal self-injurious thoughts and behaviours

BACKGROUND

Nonsuicidal self-injury (NSSI) is associated with high levels of distress, co-morbid mental health issues, and elevated risk of suicide. Previous literature indicates that emotion regulation is the most endorsed function of NSSI. Experience Sampling Methodology (ESM) provides a powerful tool for investigating the moment-to-moment associations between emotional states and NSSI thoughts and behaviours. The aim of the current study was to systematically review and evaluate ESM research concerning the relationship between momentary emotional states and NSSI.

METHODS

A systematic search of electronic databases from date of inception to 16th April 2021 was conducted. This was supplemented through backwards citation tracking. A risk of bias assessment was completed prior to data synthesis.

RESULTS

Nineteen eligible studies were identified for inclusion in the review. Heightened negative affect was found to typically precede instances of NSSIT thoughts and behaviour. Results were less consistent for positive affect.

LIMITATIONS

Sample sizes across studies were often small, meaningful effect sizes were not always reported, and non-validated measures of NSSI thoughts and behaviour were used during ESM assessments.

CONCLUSIONS

The results support affect regulation models of NSSI, and demonstrate the value of ESM studies, specifically those sampling more than once per day, in plotting the temporal, "in-the-moment" characteristics of these processes.

The Impact of Homeostatic and Circadian Sleep Processes on Non-Suicidal Self-Injury and Suicide Urges in Borderline Personality Disorder

OBJECTIVE

Borderline personality disorder (BPD) involves high rates of non-suicidal self-injury (NSSI) and suicidal behaviors, which are often preceded by urges. Disrupted sleep processes have been linked to NSSI and suicidal behaviors. However, it is unclear which specific sleep processes influence NSSI and suicide urges at rest (i.e., baseline) or in response to distress (i.e., reactivity) in BPD, and thus require targeting in BPD-specific interventions. This study examined whether two distinct homeostatic sleep processes (i.e., total sleep time [TST] and time in bed [TIB]), and one circadian sleep process (i.e., chronotype, or tendencies toward early versus late bed and rise times) predict baseline NSSI and suicide urges and urge reactivity in BPD.

METHODS

Forty adults with BPD completed a seven-day sleep diary to measure average TST and TIB. They then completed a questionnaire to measure chronotype and underwent an experiment wherein they rated NSSI and suicide urges at baseline and following an emotion induction.

RESULTS

Generalized estimating equations revealed that higher TST was associated with lower baseline NSSI urges, and lower suicide urge reactivity. Additionally, higher TIB predicted higher NSSI urge reactivity.

CONCLUSIONS

Sleep deprivation and extended time in bed may increase proclivity toward NSSI and/or suicide. Targeting these variables in BPD interventions may ultimately facilitate the reduction of NSSI and suicidal acts. HighlightsHigher total sleep time predicts lower baseline NSSI urges, suicide urge reactivityHigher time in bed predicts higher NSSI urge reactivityReducing sleep deprivation in BPD may facilitate reductions in suicide, NSSI urges.

Sleep irregularity and nonsuicidal self-injurious urges and behaviors

STUDY OBJECTIVES

The objectives of this study were to examine the relationships between sleep regularity and nonsuicidal self-injury (NSSI), including lifetime NSSI history and daily NSSI urges.

METHODS

Undergraduate students (N = 119; 18-26 years), approximately half of whom endorsed a lifetime history of repetitive NSSI, completed a 10-day actigraphy and ecological momentary assessment (EMA) protocol. A Sleep Regularity Index was calculated for all participants using scored epoch by epoch data to capture rapid changes in sleep schedules. Participants responded to EMA prompts assessing NSSI urge severity and negative affect three times daily over the 10-day assessment period.

RESULTS

Results indicate that individuals with a repetitive NSSI history were more likely to experience sleep irregularity than those without a history of NSSI. Findings also suggest that sleep irregularity was associated with more intense urges to engage in NSSI on a daily basis, even after accounting for average daily sleep duration, sleep timing, negative affect, and NSSI history. Neither sleep duration nor sleep timing was associated with NSSI history nor daily NSSI urge intensity.

CONCLUSIONS

Findings suggest that sleep irregularity is linked with NSSI, including NSSI history and intensity of urges to engage in NSSI. The present study not only supports the growing evidence linking sleep disturbance with the risk for self-injury but also demonstrates this relationship using actigraphy and real-time assessments of NSSI urge severity. Findings highlight the importance of delineating the nuances in sleep irregularity that are proximally associated with NSSI risk and identifying targets for intervention.

Implicit Associations of Nonsuicidal Self-Injury with Relief in Posttraumatic Stress and Depressive Disorders

OBJECTIVE

Although once considered a defining feature of borderline personality disorder, research has found high rates of NSSI among individuals with other psychiatric disorders, particularly posttraumatic stress disorder (PTSD) and depressive disorders. A recent study from our research team found that lifetime PTSD and depressive disorders were associated with unique self-reported NSSI motives. Given well-established limitations of assessing motives via self-report measures, the present study sought to extend this line of research by using a novel laboratory measure of the implicit NSSI-relief association to examine NSSI emotional relief motives.

METHOD

A subset of participants from our previous study (N = 109) completed diagnostic interviews and the laboratory-based DSH-Relief Implicit Association Test (IAT).

RESULTS

Findings indicated that individuals with lifetime PTSD evidenced stronger NSSI-relief associations than those without PTSD. Further, this main effect was qualified by a PTSD by depressive disorder interaction, such that stronger NSSI-relief associations were found among individuals with lifetime PTSD but no lifetime depressive disorder than among individuals without a history of either PTSD or a depressive disorder.

CONCLUSIONS

Results highlight the importance of investigating NSSI motives associated with different symptom profiles using a multi-method approach.

Examining momentary associations between behavioral approach system indices and nonsuicidal self-injury urges

BACKGROUND

The current study aimed to examine the concurrent and prospective relationships between the three hypothesized components of behavioral approach system (BAS) sensitivity: drive, reflecting the motivation to pursue one's desired goals; reward responsiveness, reflecting sensitivity to reward or reinforcement; and fun-seeking, reflecting the motivation for pursuing novel rewards in a spontaneous manner, and NSSI urge severity.

METHODS

A sample of 64 undergraduates with a history of repetitive NSSI completed an ecological momentary assessment protocol. During this period of time, participants reported on the BAS-constructs of drive, reward responsiveness, and fun-seeking, as well as NSSI urge severity on a momentary basis at three random intervals each day for a period of ten-days.

RESULTS

Drive and reward responsiveness, but not fun-seeking, were concurrently positively associated with NSSI urge severity. However, no associations between BAS facets and prospective NSSI urges were found.

LIMITATIONS

This study was limited by its use of single items to assess the BAS-constructs of drive, reward responsiveness, and fun-seeking.

CONCLUSIONS

Our findings indicate that feeling strongly impacted by rewards and having a strong sense of drive toward goal attainment may represent cognitive risk states that are associated with increased within-person NSSI risk. However, their lack of prospective prediction may suggest that these cognitive states are associated only on a momentary basis with NSSI urges and may not confer risk.

Affective variability and childhood abuse increase the risk for nonsuicidal self-injury following psychiatric hospitalization

Childhood abuse is associated with myriad negative behavioral health outcomes, including nonsuicidal self-injury (NSSI). Models aimed at understanding the mechanism whereby childhood abuse may exert negative effects frequently highlight alterations or dysregulations in experienced affect, particularly during times of stress. The period immediately following discharge from psychiatric hospitalization represents a time of risk for individuals experiencing NSSI. We aimed to investigate the extent to which childhood abuse predicts affective variability and examine whether affective variability predicts who will experience NSSI thoughts or behaviors in the 6 months following hospital discharge. Participants were adults (N = 133) engaged in a 3-week ecological momentary assessment study immediately following psychiatric hospitalization who returned for a 6-month follow-up. Location scale modeling (LSM) was used to model the impact of childhood abuse on affect variability; estimates of affect variability were then resampled and examined as risk factors for NSSI at follow-up. Overall, individuals who experienced childhood abuse reported lower positive affect intensity. Participants exposed to emotional and sexual abuse reported less between-person variability in positive affect, and those who experienced sexual abuse evidenced higher between-person variability in negative affect. Models indicated that higher overall negative affect was associated with a higher NSSI risk, ORs ∼ 1.82-2.10 even after accounting for childhood abuse and lifetime NSSI. These findings indicate the importance of in vivo affect as a critical influence on behavior during high-risk periods, reinforcing the need to move beyond traditional cross-sectional approaches of assessment, analysis, and treatment.

Emotional response inhibition to self-harm stimuli interacts with momentary negative affect to predict nonsuicidal self-injury urges

The current study investigated whether impaired emotional response inhibition to self-harm stimuli is a risk factor for real-time nonsuicidal self-injury (NSSI) urges. Participants were 60 university students with a history of repetitive NSSI. At baseline, participants completed an emotional stop-signal task assessing response inhibition to self-harm stimuli. Participants subsequently completed an ecological momentary assessment protocol in which they reported negative affect, urgency, and NSSI urge intensity three times daily over a ten-day period. Impaired emotional response inhibition to self-harm stimuli did not evidence a main effect on the strength of momentary NSSI urges. However, emotional response inhibition to self-harm images interacted with momentary negative affect to predict the strength of real-time NSSI urges, after adjusting for emotional response inhibition to neutral images. Our findings suggest that emotional response inhibition deficits specifically to self-harm stimuli may pose vulnerability for increased NSSI urge intensity during real-time, state-level negative affect.

Changes in suicide and non-suicidal self-injury ideation and the moderating role of specific emotions over the course of dialectical behavior therapy

OBJECTIVE

Dialectical behavior therapy (DBT) targets suicidal behavior and non-suicidal self-injury (NSSI) as well as urges/ideation to engage in these behaviors. However, it remains unclear which specific suicidal ideation (SI) and NSSI ideation domains (i.e., frequency, worst intensity, average intensity, perceived likelihood of future ideation, and duration of ideation), if any, are impacted, and whether specific emotions moderate these effects.

METHOD

73 individuals with borderline personality disorder (BPD), enrolled in six months of DBT, completed interviews of suicide and NSSI ideation and self-report measures of specific emotions at baseline, mid-treatment, and post-treatment.

RESULTS

Generalized estimation equations revealed that all domains of suicidal ideation decreased over the course of DBT, but for NSSI domains, only ideation intensity decreased. Higher levels of shame/guilt predicted less, and higher fear predicted more, reduction in SI and NSSI ideation frequency. Higher shame/guilt also predicted more reduction in worst SI intensity. Higher sadness predicted greater reductions in SI intensity and duration, but less reductions in the perceived likelihood of future NSSI ideation.

CONCLUSIONS

These findings suggest that DBT effectively reduces several facets of SI, but more work is required to target NSSI ideation. Results also suggest that targeting shame/guilt may be important to reducing SI and NSSI ideation.

The environmental, interpersonal, and affective context of nonsuicidal self-injury urges in daily life

Urges for nonsuicidal self-injury (NSSI) are important precursors to NSSI acts and may serve as a point of intervention. A close understanding of the phenomenology of NSSI urges and the contexts in which they occur is therefore warranted. We used ambulatory assessment to examine the environmental, interpersonal, and affective contexts of NSSI urges. We recruited 56 participants with borderline personality disorder who reported on urges and contexts for 21 days with six random daily prompts, resulting in 5,750 completed assessments. Twenty-two participants reported 160 NSSI urges. We provide extensive descriptive results characterizing the interaction partners, activities, and events participants reported in association with NSSI urges. Results from a logistic multilevel model using the full sample (testing associations between all contexts and urges simultaneously) revealed that urges were more likely to occur at higher levels of negative affect, when rejection was experienced, and later in the day. Urges were not associated with disagreements or feeling let down, being at home versus away, being alone versus in company, socializing versus doing another activity, and it being a weekday versus weekend. Additional growth curve analysis for negative affect using the subsample of 22 participants who reported urges showed that, over the course of urge days compared with nonurge days, negative affect increased before urges, peaked during the urge, and then decreased, approximating a quadratic curve. We conclude that urges occurred primarily in the context of negative affect and rejection, which is consistent with theories on intra- and interpersonal functions of NSSI. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

High-frequency ecological momentary assessment of emotional and interpersonal states preceding and following self-injury in female adolescents

Non-suicidal self-injury (NSSI) is a considerable health problem among adolescents. Affect regulation by means of self-injury may promote the maintenance of NSSI. However, existing findings have limited ecological validity. The present study aimed to assess emotional and interpersonal states preceding and following incidents of NSSI in female adolescents. Adolescents with NSSI-disorder completed ecological momentary assessments of affective and interpersonal states on an hourly basis for multiple days. Multilevel mixed-effect regression analyses were conducted to assess antecedences and consequences of acts of self-injury. Data from n = 73 female adolescents covering a total of 52 acts of self-injury were available for analyses. The urge to self-injure on the between subject-level and negative affect on the within-level were best predictors of self-injury. Surprisingly, self-injury increased negative affect and decreased feelings of attachment (mother only) in the following hour. In line with findings in adults, results illustrate the important association between negative affect and self-injury in female adolescents. However, the occurrence of NSSI itself was related to concurrent increases in negative affect, and even prospectively predicted a consecutive increase in negative affect. Therefore, improvements of negative affect following (or during) self-injury, as previously reported, are at best short-lived (< 1 h).

Suicidal thoughts, suicidal behaviours and self-harm in daily life: A systematic review of ecological momentary assessment studies

Background

Ecological Momentary Assessments (EMA) offer an approach to understand the daily risk factors of suicide and self-harm of individuals through the use of self-monitoring techniques using mobile technologies.

Objectives

This systematic review aimed to examine the results of studies on suicidality risk factors and self-harm that used Ecological Momentary Assessments.

Methods

Pubmed and PsycINFO databases were searched up to April 2020. Bibliographies of eligible studies were hand-searched, and 744 abstracts were screened and double-coded for inclusion.

Results

The 49 studies using EMA included in the review found associations between daily affect, rumination and interpersonal interactions and daily non-suicidal self-injury (NSSI). Studies also found associations between daily negative affect and positive affect, social support, sleep, and emotions and a person's history of suicide and self-harm. Associations between daily suicide thoughts and self-harm, and psychopathology factors measured at baseline were also observed.

Conclusions

Research using EMA has the potential to offer clinicians the ability to understand the daily predictors, or risk factors, of suicide and self-harm. However, there are no clear reporting standards for EMA studies on risk factors for suicide. Further research should utilise longitudinal study designs, harmonise datasets and use machine learning techniques to identify patterns of proximal risk factors for suicide behaviours.

A systematic review of daily life studies on non-suicidal self-injury based on the four-function model

Non-suicidal self-injury (NSSI) is a prevalent, impairing, and trans-diagnostic behavior that can be comprehensively assessed in daily life studies. We conducted a systematic literature review of 35 Ambulatory Assessment and Daily Diary studies of NSSI, to achieve three aims. First, we reviewed descriptive evidence on NSSI acts. On average, studies observed 1.6 acts per participant, but evidence regarding methods, pain, and context was sparse. Second, we reviewed evidence on NSSI urges. On average, studies reported 4.3 urges per participant. Urges were also associated with increased negative affect and predicted later acts. Third, we reviewed evidence on the Four-function Model of NSSI. Eight studies partially supported negative intrapersonal reinforcement, showing increased negative affect pre NSSI, but, of these, only four studies supported decreased negative affect post NSSI. Additionally, only three studies supported positive intrapersonal reinforcement, showing decreased positive affect pre and increased positive affect post NSSI. Evidence for the interpersonal functions was limited to two studies and inconclusive. We recommend assessing the intensity, frequency, and context of acts and urges, as well as pain and urge duration in future studies. We also recommend follow-up prompts after acts and urges to better track affect trajectories, and a detailed assessment of interpersonal events.

From Urges to Action: Negative Urgency and Nonsuicidal Self-Injury in an Acute Transdiagnostic Sample

Urgency-rash action during strong emotion-is a robust correlate of nonsuicidal self-injury (NSSI). This study tested whether urgency is associated with time between NSSI urges and NSSI, and sought to replicate the finding that urgency is associated with NSSI history. Participants attending a partial hospitalization program (N = 669) completed self-report measures of urgency, NSSI history and latency, and psychiatric symptoms. Consistent with previous research in clinical samples, rates of lifetime engagement in NSSI were high. Using logistic regression to predict short vs. long latency between urges and NSSI, no significant relationship emerged between negative urgency and latency to self-injure. Negative urgency more than doubled the likelihood of NSSI history (p < .001, OR = 2.39). In addition, exploratory analyses revealed several links between NSSI latency and negative urgency. Results confirm that urgency is robustly related to NSSI, yet also suggest that more research is needed to understand how urgency relates to the parameters of NSSI within those who self-injure. Use of retrospective self-report measures may limit the ability to test links between urgency and latency of NSSI.

Investigating the role of the intensity and duration of self-injury thoughts in self-injury with ecological momentary assessment

This study utilized ecological momentary assessment (EMA) to sharpen understanding of whether non-suicidal self-injury (NSSI) thought intensity and duration impacts NSSI behavior and potential alternative behaviors to NSSI. Self-injuring adolescents and young adults (N = 47) were randomly prompted using EMA to complete measures of NSSI thoughts (i.e., occurrence, intensity, duration) and behavior (i.e., engagement, frequency, duration, and methods) for two weeks. The most common NSSI thought duration was 1-30 min. Individuals with higher NSSI thought intensity were more likely to self-injure. NSSI thought intensity and duration interacted to predict NSSI frequency, duration, the number of NSSI methods, and the likelihood of cutting such that the positive relationship between NSSI thought intensity and these outcomes became stronger at longer NSSI thought durations. The most commonly endorsed non-NSSI behaviors following NSSI thoughts were pushing thoughts away, talking to others, and distraction (e.g., going out). Participants rarely endorsed using social media or online NSSI support groups in lieu of NSSI. Resisting intense NSSI thoughts over prolonged time periods may deplete the self-regulatory resources required to terminate NSSI episodes once they have begun, leading to greater NSSI frequency, longer NSSI duration, and more NSSI methods. Bolstering social support may help to reduce NSSI.

Mental images, entrapment and affect in young adults meeting criteria of nonsuicidal self-injury disorder (NSSID) - a daily diary study

BACKGROUND

Incidents of nonsuicidal self-injury (NSSI) are often accompanied by mental images which could be perceived as distressing and/or soothing; yet existing data is derived from participants with a history of NSSI using retrospective methods. This study investigated mental images related to NSSI ("NSSI-images"), and their relationship to the proposed Nonsuicidal Self-Injury Disorder (NSSID).

METHODS

An e-mail was sent to all female students of the local University providing the link to an online screening and 201 students with a history of repetitive NSSI responded. Nineteen eligible participants meeting criteria of NSSID (mean age = 25; 32% with migrant background) further completed a baseline interview and a ten-day-diary protocol.

RESULTS

Among the sample of N = 201, 83.6% reported NSSI-images. In the subsample of n = 19 diagnosed with NSSID, the frequencies of NSSI and NSSI-images were correlated; about 80% of the most significant NSSI-images were either of NSSI or of an instrument associated with NSSI (i.e., a razorblade). In the diary, 53% of the sample self-injured. NSSI-images were reported on 94% of NSSI-days, and on days with NSSI and NSSI-images, the images almost always occurred first; the images were overall perceived as twice more distressing than comforting. Images on NSSI-days were characterized by more comfort, intrusiveness and compellingness yet less vividness, and increased subsequent positive and negative affect compared to non-NSSI days. NSSI-days were further marked by increased entrapment beliefs and increased negative yet decreased positive affect at night. These results were non-significant.

LIMITATIONS

Due to non-significant results among a small sample size and a low rate of NSSI among the NSSID-group, results remain preliminary.

CONCLUSIONS

The study provides information on feasibility and methodological challenges such as intervention effects of the diary. NSSI-images may be common among individuals who engage in NSSI; they may capture ambivalent (positive and negative) appraisals of NSSI and thus play a role in NSSI and possibly a disorder such as NSSID. The preoccupation with NSSI (Criterion C of NSSID in DSM-5) may as well be imagery-based.

REGISTRATION

The study was retrospectively registered with the DRKS under the number DRKS00011854.

Physical pain recruits the nucleus accumbens during social distress in borderline personality disorder

Patients with borderline personality disorder (BPD) often engage in dangerous self-injurious behaviors (SIBs) as a maladaptive technique to decrease heightened feelings of distress (e.g. negative feelings caused by social exclusion). The reward system has recently been proposed as a plausible neural substrate, which may influence the interaction between social distress and physical pain processing in patients that engage in SIBs. Using functional magnetic resonance imaging (fMRI) in 20 adult BPD patients with a history of SIBs and 23 healthy controls (HCs), we found a hyper-activation of the nucleus accumbens (NAcc) and amygdala when painful stimuli were presented to BPD patients (but not HCs) in a state of heightened distress, induced via social exclusion. This differential NAcc activity was mediated by anxious attachment style, which is a key developmental feature of the disorder. Altogether, these results suggest a neural mechanism underlying the pathophysiology of SIBs in these patients, which is likely reinforced via the reward system.