A Sociobiological Extension of the Interpersonal Theory of Suicide

Ethological Problems with the Interpersonal Theory of Suicide

Joiner and colleagues' Interpersonal Theory of Suicide (IPTS), a prominent "desire-capability" model of suicide-based on the common-sense idea that people take their own lives because they want to, and can-is critiqued from a biological perspective. Tinbergen's ethological "four questions" guide the analysis: evolution, survival value, ontogeny, and proximate causation, each addressing a different aspect of biological understanding. Problems for IPTS emerge with all four. As a parsimonious solution, the desire-capability hypothesis is reconceived as an ultimate, instead of proximate, mode of explanation. By this light, desire and capability for suicide combined in our species' ancestral past, thus making suicide a recurrent survival threat, and driving the evolution of special-purpose defensive adaptations. This stance tallies with the pain-brain theory of the evolution of suicide, and with Joiner and colleagues' own investigation into organismic anti-suicide defenses, which appears to conflict conceptually with IPTS. These defenses' evolved algorithm may make suicide an intrinsically aleatory phenomenon, opaque to usefully accurate prediction. Positive implications for prevention and research are proposed.

Social media use and prospective suicidal thoughts and behaviors among adolescents at high risk for suicide

OBJECTIVE

To examine the relationship between social media use and suicidal thoughts and behaviors among adolescents in the first 30 days of an intensive outpatient program (IOP) for depression and suicidality.

METHOD

Participants included 100 adolescents who enrolled in an IOP for depression and suicidality and completed baseline measures of social media and weekly measures of depression and suicidal thoughts and behaviors at clinical visits over the next month.

RESULTS

Lower levels of social media use (overall and messaging) were associated with a greater likelihood of having suicidal ideation with plan over the next 30 days. There was no effect on suicidal behavior. Multilevel modeling indicated no main effects of social media use on depression or average days of suicidal thoughts. However, individuals with lower levels of social media use maintained more depression symptoms and days with passive death wish across the first month of treatment.

CONCLUSIONS

Among adolescents at high risk for suicide, less engagement in social media may reflect social anhedonia or withdrawal, which may heighten risk for more severe suicidal ideation or impede initial treatment. Findings highlight the importance of considering social media as an additional context when assessing social dysfunction in treatment for depression and suicidality.

Self-Harm and Suicidality in US College Students: Associations with Emotional Exhaustion versus Multiple Psychiatric Symptoms

PURPOSE

This study aimed at describing self-harm and suicidality (SHS) in relation to unobserved heterogeneous groups of college students based on their psychiatric symptoms. SHS of each latent class were examined by race/ethnicity to inform risk factors relevant to subgroups of U.S. college population.

METHODS

The participants (N = 42,779) were drawn from the Spring 2017 American College Health Association-National College Health Assessment II (ACHA-NCHA II) Reference Group. Latent class analysis (LCA) was conducted based on participants' reports of past-year psychiatric symptoms. The reported SHS were examined by the latent class of students and their race/ethnicity.

RESULTS

LCA identified two latent classes: The Emotional Exhaustion (EE) class and the Multiple Psychiatric Symptoms (MPS) class. Within the EE class, Black students were at the greatest risk for exhibiting suicide intent and attempted suicide. Within the MPS class, Multiracial students showed the highest odds of self-harm and suicidal intent, and Black students showed the highest odds of attempted suicide, followed by Asians/Pacific Islanders.

LIMITATIONS

The findings were based on a cross-sectional dataset that did not inform the temporal relations of psychiatric symptoms and SHS.

CONCLUSIONS

Utilizing a person-centered latent class analysis, this study revealed that Black students were of the greatest concern for SHS among those who reported only common symptoms of emotional exhaustion. The findings highlight the importance of developing preventive and remedial models that address unique risk factors and mental health needs for various subgroups of U.S. college population.

The emperor's new clothes? A critical look at the interpersonal theory of suicide

The Interpersonal Theory of Suicide currently seems to be the most popular theory in suicidology. It posits that suicide can be explained by the simultaneous presence of three risk factors only, namely acquired capability for suicide, thwarted belongingness, and perceived burdensomeness. Suicide is, however, widely accepted as a complex, multifactorial, and contextual phenomenon. It is, therefore, surprising that a theory comprised by three internal factors only is so uncritically embraced by suicide researchers. In this article, we scrutinize the theory's background, core components, and purported empirical evidence and argue that its popularity is highly unwarranted.

Psychosocial Factors Associated With Suicide Attempts, Ideation, and Future Risk in Lesbian, Gay, and Bisexual Youth

BACKGROUND

Lesbian, gay, and bisexual (LGB) youth have elevated suicidality rates.

AIMS

To investigate LGB-related and other factors associated with suicide attempts, suicidal ideation, and future suicide risk in a large UK sample.

METHOD

Logistic regression was used to investigate factors associated with suicidality in 3,275 LGB young adults from the Youth Chances project.

RESULTS

Suicide attempts (lifetime) were reported by 13.6% of participants; 45.2 % had suicidal ideation in the past year and 9.5% said future suicide attempts were likely. LGB stigma and discrimination experiences were significantly associated with all three aspects of suicidality. These included school stigma factors (e.g., teachers not speaking out against prejudice, lessons being negative about sexual minorities), negative reactions to coming out from family and friends, and LGB-related harassment or crime experiences. Bisexuality, not feeling accepted where one lives, younger sexual minority identification, and younger coming out were also associated with suicidality. Significant non-LGB factors included female gender, lower social support, anxiety/depression help-seeking, experiences of abuse/violence, and sexual abuse.

LIMITATIONS

This study is cross-sectional and further research is needed to test out whether any of these factors have a causal relationship with suicidality.

CONCLUSION

A wide range of LGB stigma and discrimination experiences are associated with increased suicidality in LGB youth. Health, social care, and education professionals supporting young people should address LGB-specific risk factors.