Routinized categorization of suicide risk into actionable strata: Establishing the validity of an existing suicide risk assessment framework in an outpatient sample

Examining Blunted Initial Response to Reward and Recent Suicidal Ideation in Children and Adolescents Using Event-Related Potentials: Failure to Conceptually Replicate Across Two Independent Samples

A recent study by Tsypes and colleagues (2019) found that children with recent suicidal ideation had blunted neural reward processing, as measured by the reward positivity (RewP), compared to matched controls, and that this difference was driven by reduced neural responses to monetary loss, rather than to reward. Here, we aimed to conceptually replicate and extend these findings in two samples (n = 264, 27 with suicidal ideation; and n = 314, 49 with suicidal ideation at baseline) of children and adolescents (11 to 15 years and 8 to 15 years, respectively). Results from both samples showed no evidence that children and adolescents with suicidal ideation have abnormal reward or loss processing, nor that reward processing predicts suicidal ideation two years later. The results highlight the need for greater statistical power, as well as continued research examining the neural underpinnings of suicidal thoughts and behaviors.

Clinically Significant Scores for Thwarted Belonging and Perceived Burden from the Interpersonal Needs Questionnaire (INQ-15)

Background: Social disconnection is associated with all-cause mortality and suicide. Measures of social disconnection with reliable cut-off scores are needed to aid in the assessment of clinically significant change. Aims: The current study sought to identify reliable clinical cut-off scores for the 15-item Interpersonal Needs Questionnaire (INQ-15), which assesses two indices of social disconnection associated with suicide ideation - thwarted belonging (TB) and perceived burden (PB) on others. Methods: The INQ-15 and measures of suicide ideation were administered to psychiatric outpatients (Nsample1 = 493; Nsample2 = 213) and psychiatric inpatients (Nsample3 = 79; Nsample4 = 87). Results: Reliable cut-off scores discriminating between the presence and absence of suicide ideation were identified across samples (TB ≥ 36 for psychiatric outpatients and ≥ 32 for inpatients; PB ≥ 12 for both psychiatric outpatients and inpatients). Limitations: Data are cross-sectional; thus, conclusions cannot be made about the predictive utility of INQ scores for future suicide ideation, attempts, or death. Conclusions: The INQ-15 yields scores with reliable cut-off scores for both TB and PB that represent clinically significant levels of social disconnection. These cut-off scores can be used in treatment trials and clinical practice to assess clinical improvement (or decline) in belonging and perceived burden.

Temporal dynamics of interoceptive attention and positive and negative affect in adults engaging in disordered eating and nonsuicidal self-injury

OBJECTIVE

Interoception (the sense of the body's state) is associated with eating disorders and nonsuicidal self-injury, potentially through relationships with affect. We examined the relationship between interoceptive attention and both positive and negative affect.

METHODS

Participants (N = 128) who reported recent self-harm (i.e., disordered eating and/or non-suicidal self-injury) completed ecological momentary assessment for 16 days. Participants completed multiple daily assessments of affect and interoceptive attention. We then tested the temporal dynamic relationship between interoceptive attention and affect.

RESULTS

There was a relationship between positive affect and interoceptive attention such that people with higher average positive affect, and times when people were above their typical positive affect, were associated with higher interoceptive attention. There was a negative relationship between negative affect and interoceptive attention, such that people with higher average negative affect, and times when people were above their own typical negative affect, were associated with lower interoceptive attention.

CONCLUSIONS

Better mood may associate with greater willingness to attend to body sensations. Our findings support active inference models of interoception and highlight the importance of refining our understanding of the dynamic nature of interoception and its relationship with affect.

Validity of the modular assessment of risk for imminent suicide in predicting short-term suicidality

OBJECTIVE

The Modular Assessment of Risk for Imminent Suicide (MARIS) is a clinical assessment tool, consisting of four modules assessing (1) a pre-suicidal cognitive-affective state (Module 1); (2) patients' attitudes toward suicide (Module 2); (3) clinicians' assessment of suicide risk factors (Module 3); and (4) clinicians' emotional responses to patients (Module 4) that assesses short-term suicide risk. Initial evidence provided evidence for its reliability and concurrent validity. The present study extended these findings by examining the MARIS's predictive validity in relation to suicidal thoughts and behaviors at one-month follow-up.

METHODS

A sample of 1039 psychiatric patients (378 inpatients, 661 outpatients) and their clinicians (N = 144) completed a battery of measures at baseline; 670 patients completed the one-month follow-up assessment.

RESULTS

MARIS total scores predicted suicidal thoughts and behaviors at one-month follow-up, even after controlling for baseline suicidal thoughts and behaviors. Moreover, both Module 1 and the Distress subscale of Module 4 were uniquely associated with suicidal thoughts and behaviors at one-month follow-up, controlling for baseline suicidal thoughts and behaviors. Modules 2 and 3, on the other hand, exhibited poor internal consistency.

CONCLUSION

Overall, both patient- and clinician-rated indices are uniquely predictive of suicidal thoughts and behaviors at one-month follow-up, highlighting the need for integrating clinicians' emotional responses into suicide risk assessment. Pending replication and extension of these findings in external samples, a briefer, two-module version of MARIS (MARIS-2) may be such an integrative, psychometrically sound, and clinically useful instrument that can be utilized to assess short-term suicide risk.

Suicidal thoughts, behaviors, and event-related potentials: A systematic review and meta-analysis

Suicidal thoughts and behaviors (STBs) are thought to result from, at least in part, abnormalities in various neural systems. Event-related potentials (ERPs) are a useful method for studying neural activity and can be leveraged to study neural deficits related to STBs; however, it is unknown how effective ERPs are at differentiating various STB groups. The present meta-analysis examined how well ERPs can differentiate (a) those with and without suicidal ideation, (b) those with and without suicide attempts, (c) those with different levels of suicide risk, and (d) differences between those with suicide attempts versus those with suicidal ideation only. This meta-analysis included 208 effect sizes from 2,517 participants from 27 studies. We used a random-effects meta-analysis using a restricted maximum likelihood estimator with robust variance estimation. We meta-analyzed ERP-STB combinations that had at least three effect sizes across two or more studies. A qualitative review found that for each ERP and STB combination, the literature is highly mixed. Our meta-analyses largely did not find significant relationships between STBs and ERPs. We also found that the literature is likely severely underpowered, with most studies only being sufficiently powered to detect unrealistically large effect sizes. Our results provided little-to-no support for a reliable relationship between the ERPs assessed and STBs. However, the current literature is severely underpowered, and there are many methodological weaknesses that must be resolved before making this determination. We recommend large-scale collaboration and improvements in measurement practices to combat the issues in this literature.

Interoception, Pain Tolerance, and Self-Injurious Behaviors: A Multidimensional Assessment

Impairments in interoception have been linked to self-injurious behaviors, and capability for suicide may account for this relationship. However, past studies have relied primarily on self-report and unidimensional measures. The present study aimed to replicate and extend previous findings by examining the relationship between interoceptive dysfunction, pain tolerance, and self-injurious behaviors using a multidimensional and multi-method approach. A sample of 245 undergraduate students (M_age = 19.27 years, SD = 2.81; 73.7% female, 72.% White/European American), who reported lifetime suicidal ideation on a screening survey completed a battery of self-report measures, four counterbalanced pain tolerance tasks, and a clinical interview assessing their self-injurious behaviors. A tendency to stay attuned to bodily sensations was significantly related to decreased pain tolerance. Only trust in one's body was significantly related to decreased presence of lifetime suicide attempts. No other facets of interoception or pain tolerance were significantly associated with self-injurious behaviors. Overall, these findings contrast with previous findings that capability for suicide may account for relations between interoceptive dysfunction and self-injurious behaviors. Nonetheless, the results of this study provide important information on the factor structure of interoceptive dysfunction and pain tolerance, and highlight the importance of careful selection of measures and operationalization of key constructs, particularly interoceptive dysfunction and pain tolerance.