Machine learning in suicide science: Applications and ethics

For decades, our ability to predict suicide has remained at near‐chance levels. Machine learning has recently emerged as a promising tool for advancing suicide science, particularly in the domain of suicide prediction. The present review provides an introduction to machine learning and its potential application to open questions in suicide research. Although only a few studies have implemented machine learning for suicide prediction, results to date indicate considerable improvement in accuracy and positive predictive value. Potential barriers to algorithm integration into clinical practice are discussed, as well as attendant ethical issues. Overall, machine learning approaches hold promise for accurate, scalable, and effective suicide risk detection; however, many critical questions and issues remain unexplored.     

Gender Differences in Reactions to Mental Illness Labeling: The Role of Agency and Communion

Numerous individual characteristics influence responses to receiving a mental health diagnosis, including gender. This study sought to determine how gender influences reactions to being labeled as depressed or not depressed, which were categorized as falling into themes of communion or agency. Using the themes developed by Niedzwienska (2003), 168 college students’ responses to depression labels were coded as a part of a laboratory experiment. The results indicate that the expected sex differences do exist, but multivariate analyses indicate that the choice of communal themes was influenced by sex but the use of agency themes was not influenced by sex.     

You’re looking for what? Comparing search for familiar,nameable objects to search for unfamiliar,novel objects

Searching for items in one’s environment often includes considerable reliance on semantic knowledge. The present study examines the importance of semantic information in visual and memory search, especially with respect to whether the items reside in long-term or working memory. In Experiment 1, participants engaged in hybrid visual memory search for items that were either highly familiar or novel. Importantly, the relatively large number of targets in this hybrid search task necessitated that targets be stored in some form of long-term memory. We found that search for familiar objects was more efficient than search for novel objects. In Experiment 2, we investigated search for familiar versus novel objects when the number of targets was low enough to be stored in working memory. We also manipulated how often participants in Experiment 2 were required to update their target (every trial vs. every block) in order to control for target templates that were stored in long-term memory as a result of repeated exposure over trials. We found no differences in search efficiency for familiar versus novel objects when templates were stored in working memory. Our results suggest that while semantic information may provide additional individuating features that are useful for object recognition in hybrid search, this information could be irrelevant or even distracting when searching for targets stored in working memory.     

Capitalising on Positive Work Events by Sharing them at Home

The authors integrate existing theory on work–family integration and interpersonal capitalisation on positive work events by examining the effects of sharing positive work events with one's spouse on employee life satisfaction. A field study was conducted with 131 employees of a large Midwestern university, who completed surveys online. Participants provided accounts of their most important positive event during the prior week and indicated whether they had shared this event with their spouse. They also retrospectively rated their positive affect and life satisfaction over the course of the study. Results based on hierarchical regression analysis indicated that having shared that event with one's spouse was positively associated with positive affect and life satisfaction after controlling for personality and event characteristics. These results were corroborated in a subsample of 99 employees whose spouses provided independent reports of whether the event was shared with them. This research reveals that sharing positive events with others has unique and significant contributions to positive affect and life satisfaction. More importantly, these findings show that the interpersonal act of sharing is effective when conducted cross‐domain: the act of sharing positive work events with family members increases positive affect and life satisfaction.     

Working while studying at university: The relationship between work benefits and demands and engagement and well-being

We tested a role-conflict, depletion, and enrichment model, in which work-based benefits (enabling resources, psychological rewards, and psychological involvement) and work-based demands (time-, strain-, and behaviour-based demands, and hours worked) were antecedents to work–university conflict and work–university facilitation, which, in turn, were antecedent to students' academic engagement (dedication and vigour) and well-being (general and context-specific feelings about university). We also tested whether conflict and facilitation acted as mediators in the relationships between benefits and demands and the outcomes of engagement and well-being. The hypotheses were tested using 185 university students (77% female; mean age = 22.7 years) who were working while studying. Work-based benefits (enabling resources, rewards, and involvement) were associated with higher work–university facilitation; more time demands and fewer psychological rewards were associated with more work–university conflict; facilitation was associated with more engagement (dedication) and general well-being; and conflict was associated with more negative feelings towards the university. There were no mediation effects. Working while studying is related to students' engagement and well-being, although modest effects were explained by role-conflict theory.     

WHO FILLS OUT A LESBIAN QUESTIONNAIRE?

Most research on lesbians has used self-report questionnaires, and assumed that respondents who complete a lesbian questionnaire self-identify as lesbians and engage in sexual relationships with women. The present study examined the degree to which 2,393 women who answered a Lesbian Wellness Survey are distributed on five aspects of lesbian sexuality and the coming-out process. The five aspects were: (a) Sexual Orientation (numerical rating of sexual identity from exclusively lesbian/gay to exclusively heterosexual); (b) Years Out (length of time of self-identity as lesbian/gay/bisexual); (c) Outness/Disclosure (amount of disclosure of sexual orientation to others); (d) Sexual Experience (proportion of sexual relationships with women); and (e) Lesbian Activities (extent of participation in lesbian community events). Mild but significant correlations were found among these dimensions, indicating that being lesbian is not a homogeneous experience. Closer examination by the demographic characteristics of race/ethnicity and age revealed a diversity of experience. African American, Native American, and Latina respondents had moderate correlations among these aspects of lesbian experience, whereas White and Asian American respondents evidenced only mild or nonsignificant correlations. The results indicate that researchers who are studying one aspect of the lesbian experience (e.g., outness to others) need to ensure that they are not assuming such behavior based on other dimensions (such as frequent participation in lesbian community activities or years of being out), especially among White and Asian American lesbians.     

Alberta's suicide prevention training programs: a retrospective comparison with Rothman's developmental research model

Developmental research is used to transform existing knowledge into applied programs. A social research and development (R&D) method, developed by Rothman for the human service professions, is compared with the method used to develop the Suicide Prevention Training Programs in Alberta, Canada. A retrospective review compares the development of these programs, which have since been implemented both nationally and internationally, with Rothman's model; discusses social R&D as a transformation methodology; and draws conclusions about the probable success of using developmental research methods in the human services. The review finds that the Alberta method closely paralleled the phases of Rothman's model. Results show that the transformation of knowledge about suicide into widely disseminated suicide prevention training programs can be attributed to the application of social R&D principles. The study concludes that the use of developmental research methods to establish human service programs should increase the probability of their success.