A directional look at F‐tests

Directional testing of vector parameters, based on higher order approximations of likelihood theory, can ensure extremely accurate inference, even in high‐dimensional settings where standard first order likelihood results can perform poorly. Here we explore examples of directional inference where the calculations can be simplified, and prove that in several classical situations, the directional test reproduces exact results based on F‐tests. These findings give a new interpretation of some classical results and support the use of directional testing in general models, where exact solutions are typically not available. The Canadian Journal of Statistics 47: 619–627; 2019 © 2019 Statistical Society of Canada     

The Psychometric Properties of the Hypersexual Behavior Inventory Using a Large-Scale Nonclinical Sample

The conceptualization of hypersexuality has begun to converge as a result of proposed diagnostic criteria. However, its measurement is still diverse. The Hypersexual Behavior Inventory (HBI) is one of the most appropriate scales used to assess hypersexuality, but further examination is needed to test its psychometric properties among different clinical and nonclinical groups, including samples outside of the United States. The aim of the present study was to investigate the reliability and the generalizability of HBI and to determine a cutoff score on a large, diverse, online, nonclinical sample (N = 18,034 participants; females = 6132; 34.0%; M_age = 33.6 years, SD_age = 11.1). Confirmatory factor analysis (CFA) and reliability indices provided support for the structure of the HBI and demonstrated excellent reliability. Employing latent profile analysis (LPA), seven classes emerged, but they could not be reliably distinguished by objective sexuality-related characteristics. Moreover, it was not possible to determine an adequate cutoff score, most likely due to the low prevalence rate of hypersexuality in the population. HBI can be reliably used to measure the extent of hypersexual urges, fantasies, and behavior; however, objective indicators and a clinical interview are essential to claim that a given individual may exhibit features of problematic sexual behavior.     

Life after loss: Comparing student service member/veteran and civilian mental health characteristics among individuals exposed to death by suicide

Objective: This study evaluated the mental health characteristics and beliefs of student service members/veterans (SSM/Vs) who have been exposed to another’s death by suicide.

Participants: A total of 39 SSM/Vs exposed to suicide and 32 SSM/Vs not exposed to suicide were sampled from a larger, epidemiological survey. An age- and gender-matched group of 39 civilian (C) students was drawn from a larger sample of individuals exposed to suicide.

Methods: Data were collected as part of an Internet-based, campus needs survey that occurred in Fall 2014. Participants were asked to complete measures about suicide-related behaviors, suicide prevention, help-seeking, and demographics.

Results: SSM/Vs exposed to suicide had more positive mental health/suicide prevention beliefs than SSM/Vs not exposed to suicide. Cs exposed to suicide were not significantly different from either group. Unique help-seeking patterns were also identified.

Conclusions: The current study identifies unique characteristics of SSM/Vs exposed to suicide that may inform prevention programming.     

“Replacement Migration”: The UN Population Division on European Population Decline

The imminent decline of populations in Europe, Japan and South Korea has generated widespread apprehension, largely because of fears that there will not be enough working age people to support the elderly. The UN Population Division has seemed to endorse those fears by an analysis of the levels of immigration needed to provide a constant number or ratio of workers, and by writing of the need for a solution to population decline. On the other hand, smaller populations would be environmentally advantageous in those countries. They must return to replacement level fertility or risk replacement by other populations, but they would benefit if they reached stationarity at a smaller population level. The transition is manageable if a higher proportion of working age people go to work. Right now, though dependency ratios are supposedly highly favorable, most of those countries are plagued by high unemployment levels.     

Benefits of caseload midwifery to prevent fetal alcohol spectrum disorder: A discussion paper

Background

Exposure to alcohol prenatally can result in a child being diagnosed with fetal alcohol spectrum disorder. Affected infants experience lifelong impairments that can involve, physical, cognitive, behavioural and emotional difficulties that impact on their functional capacity. Effective prevention of fetal alcohol spectrum disorder is critically needed in Australia. Reduction in the prevalence of this disorder will only be possible if we prevent alcohol consumption during pregnancy.

The Long‐Term Effects of Spousal Care Giving on Survivors' Well‐Being in Widowhood*

Objective. Previous research suggests that bereavement and adjustment to widowhood are long term and should be studied as processes rather than as static outcomes. We analyze how spousal care giving affects survivors' depressive symptoms 18 and 48 months into widowhood. Method. We use three waves of data from the Changing Lives of Older Couples (CLOC) Survey and estimate OLS regression equations to determine the long‐term effects of spousal care giving on widow(er)s' well‐being. Results. At 18 months, more burdensome spousal care giving predicted higher levels of depressive symptoms, while greater caregiver stress predicted lower levels. Specific characteristics of the caregiving situation were no longer significant predictors of well‐being 48 months into widowhood, although care giving itself had an ameliorative effect on level of symptoms. Conclusions. The results highlight the dynamic nature of bereavement and suggest that the effects of spousal care and characteristics of the care situation on depressive symptoms during widowhood are not linear over time. We discuss the implications of our findings for the conceptualization of the relationship between care giving and bereavement.     

Boundary-spanning work demands and their consequences for guilt and psychological distress

Using data from a national survey of working Americans (Work, Stress, and Health Survey; N = 1,042), the authors examine the associations between boundary-spanning work demands and self-reported feelings of guilt and distress. The authors document gender differences in the emotional and mental health consequences of boundary-spanning work demands, as indexed by the frequency of receiving work-related contact outside of normal work hours. Specifically, the authors observe that frequent work contact is associated with more feelings of guilt and distress among women only. Analyses also demonstrate that guilt accounts for the positive association between the frequency of work contact and distress among women. Statistical adjustments for levels of guilt reduce the positive association between frequent work contact and distress among women to nonsignificance. The findings underscore the importance of focusing on gender and emotions in work-family interface processes, as well as their implications for psychological health.