Acquired Capability For Suicide Research Articles

Acquired Capability for Suicide: An Evolutionary Concept Analysis

While virtually all suicide attempters experience ideations, not all who think about suicide will attempt or die by suicide. The ideation-to-action framework has led to new theories distinguishing suicide ideators from suicide attempters. The framework suggests that suicide progresses on a spectrum of thoughts and behaviors with different identifiers and explanations. The concept of acquired capability for suicide (ACS), conceptualized by the Interpersonal Psychological Theory of Suicide, is the first to explain the movement from ideation to action. This concept analysis of ACS is timely and relevant for greater clarification of the role ACS has in the movement from ideation to action. Rodgers’ evolutionary concept analysis method is used. The six-step evolutionary method highlights the concept’s attributes, antecedents, and consequences and provides a basis for further inquiry and development rather than a final definition.

A latent class analysis of non-suicidal self-injury and associations with constructs from the interpersonal theory of suicide in a sample of sexual minority young adults

Introduction: Self-directed violence (SDV), comprising both non-suicidal self-injury (NSSI) and suicide, is elevated among sexual minority populations. NSSI age of onset has been shown to impact severity of SDV outcomes. Components of the Interpersonal Theory of Suicide (ITS), which includes perceived burdensomeness (PB), thwarted belongingness (TB), and acquired capability for suicide (ACS), may be useful to understanding NSSI subgroups, especially among under-researched groups such as sexual minority persons. Methods: This study examined subtypes of NSSI and associations with constructs from the ITS. A sample of 473 sexual minority young adults with a history of NSSI completed self-report measures assessing demographics, SDV, and ITS constructs. More than half of the sample (59.7%) reported engaging in NSSI during their lifetime. For suicidal thoughts and behaviors, a majority of the sample reported having thoughts of suicide in their lifetime (87.3%), and one-third reported a lifetime suicide attempt (33.0%). Results: Latent class analysis revealed three classes: (1) lower NSSI, (2) moderate NSSI, and (3) higher NSSI. NSSI age of onset, intensity of suicidal thoughts, suicide plan likelihood, duration of NSSI, and number of NSSI methods differentiated groups. Multivariate Analysis of Variance (MANOVA) revealed that the lower NSSI group reported lower PB and TB than the moderate NSSI group. No differences were found for ACS across NSSI classes. Discussion: Results are discussed in terms of their theoretical implications and application for counseling at-risk sexual minority young adults. This study identifies factors associated with subgroups of self-directed violence among sexual minority young adults. Such findings inform gaps in self-directed violence prevention research and clinical practice for sexual minority persons.

External Minority Stress, Gender Dysphoria, and Capability for Suicide Among Transgender Adults: A Daily Diary Study.

This study analyzed whether external gender-related minority stress (i.e., discrimination, rejection, and violence) and gender dysphoria contribute to same-day and next-day acquired capability for suicide (ACS) in a sample of transgender adults residing in the southeastern United States. A sample of transgender participants (n = 38, 84.2% White, average age = 28.6 years) residing in the southeastern United States completed daily surveys on discrimination, rejection, violence, gender dysphoria, and ACS over 30 days (n = 836 of the 1,140 surveys sent out were completed). External minority stress (i.e., rejection, discrimination, and violence) was very common in this sample. External minority stress experiences were reported on 16% of the completed daily surveys, and 68% of the sample reported experiencing such stress at least once over the 30-day study period. Similarly, gender dysphoria occurred on 37.2% of the completed days and was experienced on at least 1 day by 78.9% of the participants over the 30-day survey period. Multilevel modeling showed daily experiences of discrimination and rejection, but not gender dysphoria, were positively associated with same-day ACS. Violence trended toward significance in correlating with same-day capability for suicide. Neither external minority stress nor gender dysphoria were associated with next-day ACS while controlling for acquired capability reported on the previous day. These preliminary data support proximal associations of external gender minority stress with same-day, but not next-day, ACS. Findings from this study advance understanding of how anti-transgender discrimination and violence contribute to increased capability for suicide in a population at increased risk for suicide.

The Influence of Insecure Attachment to Parents on Adolescents' Suicidality.

Insecure attachment has been identified as a risk factor for adolescent psychopathology and, consequently, for suicidal behavior. We aimed to highlight the relationship between the attachment styles of adolescents and their suicidal behavior and to investigate the role of each parent in the suicidality pathway of adolescents. The sample consisted of 217 adolescent inpatients who were at the highest risk for suicidal behavior and who were hospitalized in the Unit for Intensive Child and Adolescent Psychiatry. Self-report questionnaires assessing their attachment to their parents, their acquired capability for attempting suicide, their suicidality, and a number of traumatic life events were administered. The results showed a higher level of attachment avoidance rather than attachment anxiety among the most at-risk adolescents. An acquired capability for suicide (ACS) mediated the positive correlation between adolescents' attachment avoidance in relation to the mother or father and their suicidality. The suppressive mediating effect of an ACS on the association between attachment anxiety in relation to the father and suicidality was detected. The odds ratio for attempted suicide was more than two times higher for adolescents who were insecurely attached to their father compared to adolescents who were insecurely attached to their mother. Our results confirmed the importance of attachment, especially paternal attachment, in developing suicidality during adolescence. Preventive and clinical interventions should target these important domains with the aim of decreasing suicidality among adolescents.

Does Video Game Play Elevate Suicide Risk? A Cross‐sectional Study of Japanese Young Adults1,2

AbstractThe present study explored the relationship between video/online game playing and suicide risk among Japanese young adults using the interpersonal–psychological theory of suicide. A sample of 310 players aged 20–39 years was recruited through an Internet research company. Each participant completed a questionnaire containing items that measured time spent on games, game addiction (GA), game categories, suicidal ideation (SI), suicide attempt (SA), perceived burdensomeness, thwarted belongingness, acquired capability for suicide (ACS), depression, and demographic variables (including age and sex). Multiple regression analyses revealed that depression and the GA × depression interaction significantly explained SI. However, the effect was limited. Additionally, the results revealed that SI was a strong predictor of SA, but the SI × ACS interaction and the SI × ACS × time spent on games interaction were also significant. It should be noted that the time spent on games explained the SA only when SI was low and ACS was high. These results may indicate the necessity of examining suicide risk in GA interventions for young adults; however, more research is needed.

Predictors of Treatment Engagement Among Suicidal Youth Experiencing Homelessness.

Homeless youth experience high rates of suicidal ideation and attempts, yet limited research has examined predictors of treatment engagement among this population. Suicidal homeless youth (N = 150) between the ages of 18 and 24years were recruited from a drop-in center in Columbus, Ohio. Participants were randomly assigned to Cognitive Therapy for Suicide Prevention + treatment as usual through a local drop-in center (CTSP + TAU) (N = 75) or TAU alone (N = 75), and treatment attendance among those assigned to CTSP + TAU was examined in this study. As expected, among youth engaged in CTSP + TAU, those with a history of intimate partner violence (IPV) showed decreased odds of treatment attendance. Additionally, youth randomized into CTSP + TAU with higher acquired capability for suicide (ACS) scores and those identifying as Black were more likely to attend treatment sessions. Findings suggest that effective treatment implementation must consider youth's trauma history, demographics and severity of suicidal ideation and behaviors.

No game, more pain - Examining possible long term effects and underlying mechanisms of habitual violent video gaming on the acquired capability for suicide

According to Joiner`s interpersonal-psychological theory of suicide repeated engagement in suicidal behavior or so-called painful and provocative events constitutes the acquired capability for suicide (ACS) comprising two facets: enhanced pain tolerance and fearlessness about death (FAD). Recent research showed that single bouts of violent-video-gaming (VVG) increase pain tolerance. It is unknown whether individuals who habitually play VVGs at a high frequency rate show higher signs of ACS in terms of low pain sensitivity, high tolerance and lowered FAD compared to non-gamers. In a cross-sectional case-control study, we compared pain sensitivity and tolerance during a 5-min Cold-Pressor-Test (CPT) besides FAD in young males, playing VVGs highly frequent (n = 18) vs. non-gamers (n = 17). Mood was rated before and after the CPT. We found higher CPT-pain tolerance, lower intensity ratings and higher FAD scores among gamers compared to non-gamers. A significant time x group interaction of pain ratings indicated a process of habituation in the gamers. An increase of positive mood in the gamers emphasizes the role of opponent processes. The results suggest that habitual VVG might reflect a repetitive behavior enhancing the ACS.

Depression, Acquired Capability for Suicide, and Attempted Suicide.

The study sought to replicate, with a community sample and different measures of the critical variables, the finding of Chu et al. (Cognitive Therapy and Research, 2016, 40, 22) in a military sample that suicide attempts were more frequent for those reporting higher numbers of depressive episodes if acquired capability for suicide (ACS) was also high. An online survey (N=251) collected data on episodes and severity of depression, number of suicide attempts, and a questionnaire measure of ACS. The interaction effect reported by Chu et al. (Cognitive Therapy and Research, 2016, 40, 22) was replicated, but depended on using the Fearlessness of Death component of ACS and the number and not the severity of depressive episodes. The moderating effect of ACS on the relation between depression and suicide attempts can be demonstrated beyond a military and predominately male sample. Limitations of the study are noted.

Masculine gender-related personality traits and acquired capability for suicide

In most countries, substantially more men than women die by suicide, implicating masculine gender-related personality (MGP) traits as a risk factor for suicide. The Interpersonal Theory of Suicide posits that acquired capability for suicide (ACS) is needed to end one’s life. To investigate MGP traits and ACS, college students (N = 149) completed measures of stoicism, sensation seeking, physical aggression, and ACS. For both genders, most MGP traits were associated with increased ACS. Physical aggression mediated relations between both stoicism and sensation seeking and ACS, but gender did not moderate these associations, suggesting similar patterns for men and women.

Examining Patterns of Change in the Acquired Capability for Suicide Among Eating Disorder Patients

Several models of suicidal behavior posit that, to transition from suicidal ideation to attempting suicide, individuals must have an acquired capability for suicide (ACS), comprised of fearlessness about death (FAD) and pain tolerance. ACS is hypothesized to increase monotonically through exposure to painful and provocative experiences. However, recent research suggests that ACS can decrease, bringing into question the hypothesis of monotonic increase. This study examined the nature of change in ACS over time within a sample of patients with eating disorder (ED). We predicted that there would be two classes of change in ACS: one high and increasing and one moderate and stable. One hundred female patients with ED reported on ACS at admission and weekly during treatment. Growth mixture modeling to test models of FAD and pain tolerance identified that, for both factors, a one-class intercept-only model was the best-fitting model, suggesting that patients entered treatment with midlevel ACS and experienced no significant linear change over the course of treatment. Acquired capability for suicide demonstrated stability in this study; results highlight the need for additional research examining ACS across different timescales and in varied populations.

An Investigation into the Acquired Capability for Suicide.

The acquired capability for suicide (ACS) is one of the most important breakthroughs in suicide research. ACS refers to an individual's increased fearlessness about death over time from experiencing painful and provocative events (PPE) and is based on opponent-process theory-a habituation model. Few studies have investigated how ACS develops and found that ACS remained relatively stagnant. This study sought to expand these findings by observing how ACS develops in two cross-sectional data sets involving high-risk nonclinical samples of physicians (n=419) and veterinary students (n=124). Participants completed online questionnaires assessing both general PPEs (e.g., witnessing abuse) and job-specific PPEs (e.g., exposure to euthanasia), as well as ACS. Our results partially replicated prior findings indicating that more PPEs do not significantly affect ACS. Limitations of this study include the use of cross-sectional data and self-report measures. These results, in combination with existing models of habituation, suggest ACS may not progress linearly.

Posttraumatic Stress Disorder Symptom Clusters and Acquired Capability for Suicide: A Reexamination Using DSM-5 Criteria.

This study used the interpersonal-psychological theory of suicide to explore the relationships among DSM-5 posttraumatic stress disorder (PTSD) symptom clusters derived from the six-factor anhedonia model and facets of acquired capability for suicide (ACS). In a sample of 373 trauma-exposed undergraduates, most PTSD symptom clusters were negatively associated with facets of ACS in bivariate correlations, but the anhedonia cluster was positively associated with ACS in regression models. Structure coefficients and commonality analysis indicated that anhedonia served as a suppressor variable for the other symptom clusters. Our findings further elucidate the complex relationship between specific PTSD symptom clusters and ACS.

A Neural Basis for the Acquired Capability for Suicide.

The high rate of fatal suicidal behavior (SB) in men is an urgent issue as highlighted in the public eye via news sources and media outlets. In this study, we have attempted to address this issue and understand the neural substrates underlying the gender differences in the rate of fatal SB. The Interpersonal–Psychological Theory of Suicide has proposed an explanation for the seemingly paradoxical relationship between gender and SB, i.e., greater non-fatal suicide attempts by women but higher number of deaths by suicide in men. This theory states that possessing suicidal desire (due to conditions such as depression) alone is not sufficient for a lethal suicide attempt. It is imperative for an individual to have the acquired capability for suicide (ACS) along with suicidal desire in order to die by suicide. Therefore, higher levels of ACS in men may explain why men are more likely to die by suicide than women, despite being less likely to experience suicidal ideation or depression. In this study, we used activation likelihood estimation meta-analysis to investigate a potential ACS network that involves neural substrates underlying emotional stoicism, sensation-seeking, pain tolerance, and fearlessness of death, along with a potential depression network that involves neural substrates that underlie clinical depression. Brain regions commonly found in ACS and depression networks for males and females were further used as seeds to obtain regions functionally and structurally connected to them. We found that the male-specific networks were more widespread and diverse than the female-specific ones. Also, while the former involved motor regions, such as the premotor cortex and cerebellum, the latter was dominated by limbic regions. This may support the fact that suicidal desire generally leads to fatal/decisive action in males, while, in females, it manifests as depression, ideation, and generally non-fatal actions. The proposed model is a first attempt to characterize the neural networks underlying gender differences in SB. Future studies should examine the proposed network to better characterize and refine this network using tasks specifically targeted toward constructs underlying ACS.

A Preliminary Test of the Interpersonal-Psychological Theory of Suicide in Women Seeking Shelter From Intimate Partner Violence.

Women seeking shelter from intimate partner violence (IPV) are at greater risk of suicide ideation and attempts compared with women in the general population. A theoretically grounded understanding of suicide risk in shelter-seeking women is critical to improve assessment and management of suicide risk in this population. The interpersonal-psychological theory of suicide (IPTS) proposes that suicide ideation results from hopelessness about thwarted belongingness and perceived burdensomeness. However, suicide ideation does not progress to death by suicide unless one has acquired the capability for suicide (i.e., pain tolerance and fearlessness about death) via repeated exposure to painful and fearsome events. The present study provides a preliminary test of the IPTS in a sample of 134 women seeking shelter from IPV. First, we examined factors theoretically related to suicide ideation, demonstrating that only at high levels of hopelessness was perceived burdensomeness associated with suicide ideation. The study also examined factors theoretically related to the acquired capability for suicide (ACS), indicating that physical partner violence perpetration was associated with ACS. These findings suggest that perceived burdensomeness, particularly in the context of increased hopelessness, is important in the assessment and treatment of suicide ideation. Furthermore, violence perpetration may indicate greater risk of the capability to die by suicide among women seeking shelter from IPV.

The Relationship Between Video Game Play and the Acquired Capability for Suicide: An Examination of Differences by Category of Video Game and Gender.

This study examined the relationship between video game (VG) play and the acquired capability for suicide (ACS), as well as the moderating effects of VG category and gender on this relationship. Participants were 228 college students who played VGs on a weekly basis and who completed self-report assessments of VG play, painful and provocative events, and the ACS. Results indicated that there was a significant positive association between hours of VG play and the ACS. The action category of VGs was a significant moderator of the relationship between hours of VG play and the ACS after adjusting for previous painful and provocative events. Gender did not significantly moderate the relationship between hours of VG play and the ACS, and there was no significant three-way interaction between hours of VG play, playing action category VGs, and gender. This suggests that individuals who play many hours of action VGs may be more capable of lethal self-harm if they experience suicide ideation, although this association does not exist for individuals who play other categories of VGs.

Assessment of acquired capability for suicide in clinical practice

The Interpersonal Psychological Theory of suicide proposes that the interaction between Thwarted Belongingness, Perceived Burdensomeness, and Acquired Capability for Suicide (ACS) predicts proximal risk of death by suicide. Instruments to assess all three constructs are available. However, research on the validity of one of them, the acquired capability for suicide scale (ACSS), has been limited, especially in terms of its clinical relevance. This study aimed to explore the utility of the different versions of the ACSS in clinical assessment. Three versions of the scale were investigated, the full 20-item version, a 7-item version and a single item version representing self-perceived capability for suicide. In a sample of patients recruited from a clinic specialising in the treatment of suicidality and in a community sample, all versions of the ACSS were found to show reasonable levels of reliability and to correlate as expected with reports of suicidal ideation, self-harm, and attempted suicide. The item assessing self-perceived acquired capacity for suicide showed highest correlations with all levels of suicidal behaviour. However, no version of the ACSS on its own showed a capacity to indicate suicide attempts in the combined sample. It is concluded that the versions of the scale have construct validity, but their clinical utility is limited. An assessment using a single item on self-perceived ACS outperforms the full and shortened versions of ACSS in clinical settings and can be recommended with caution for clinicians interested in assessing this characteristic.

Interpersonal Violence, Alcohol Use, and Acquired Capability for Suicide

Acquired capability for suicide (ACS), defined as pain tolerance and fearlessness about death, is theorized as necessary to enact suicide. This study examined the associations of interpersonal violence and alcohol use with ACS in 502 college students. General fearlessness/pain tolerance was positively associated with male gender and alcohol use. Fearlessness about death was positively associated with male gender and general physical violence perpetration. However, these risk factors did not explain variance in ACS beyond male gender and history of suicide attempts/nonsuicidal self-injury. These findings add to the understanding of ACS correlates.

The joint influence of acquired capability for suicide and stoicism on over-exercise among women

We investigated longitudinal relationships among eating disorder behaviors, stoicism, and the acquired capability for suicide (ACS), which is a construct comprised of pain tolerance and fearlessness about death. University students (n=150) completed assessments measuring stoicism, ACS, and eating disorder behaviors at two time points approximately 30days apart. Among women, there was a quadratic relationship between ACS and over-exercise behaviors, such that as ACS increased the positive association between ACS and over-exercise became more pronounced. Further, among women, ACS moderated the relationship between stoicism and over-exercise, such that high levels of ACS in combination with stoicism predicted increases in over-exercise. Results suggest that ACS in combination with stoicism may lead women to engage in more eating disordered behaviors, like over-exercise.

Exercise caution: Over-exercise is associated with suicidality among individuals with disordered eating

We conducted four studies to examine the relationship between over-exercise and suicidality. Study 1 investigated whether over-exercise predicted suicidal behavior after controlling for other eating disorder behaviors in a patient sample of 204 women (144 with Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV) Bulimia Nervosa [BN]). Study 2 tested the prospective association between over-exercise and acquired capability for suicide (ACS) in a sample of 171 college students followed for 3–4 weeks. Study 3 investigated whether pain insensitivity accounted for the relationship between over-exercise and ACS in a new sample of 467 college students. Study 4 tested whether ACS accounted for the relationship between over-exercise and suicidal behavior in a sample of 512 college students. In Study 1, after controlling for key covariates, over-exercise was the only disordered eating variable that maintained a significant relationship with suicidal behavior. In Study 2, Time 1 over-exercise was the only disordered eating behavior that was associated with Time 2 ACS. In Study 3, pain insensitivity accounted for the relationship between over-exercise and ACS. In Study 4, ACS accounted for the relationship between over-exercise and suicidal behavior. Over-exercise appears to be associated with suicidal behavior, an association accounted for by pain insensitivity and the acquired capability for suicide; notably, this association was found across a series of four studies with different populations.