Sex-Specific Developmental Effects of Father Absence on Casual Sexual Behavior and Life History Strategy

An Exploratory Investigation of Childhood Sexual Abuse and Other Theory-Driven Predictors of Sex Work Among Women with and without Childhood ADHD

Limited research has identified prospective risk factors for young-adult sex work or examined overlapping predictors concurrently. We investigated childhood sexual abuse (CSA), along with other theory-driven predictors of sex work, among a well-characterized sample of girls with and without childhood diagnoses of attention/deficit-hyperactivity disorder (ADHD).

METHODS

Participants were a racially and socioeconomically diverse sample of 140 girls with rigorously diagnosed ADHD (47 Inattentive [ADHD-I], 93 Combined [ADHD-C]), and 88 age- and ethnicity-matched comparison girls, all followed longitudinally into adulthood. Self-report data on young-adult occupations revealed a subsample of 7 participants reporting engagement in "sex work" or "prostitution." Logistic regressions tested whether CSA, measured both dichotomously and by discrete age ranges, predicted later sex work, accounting for other risk factors.

RESULTS

A lifetime history of CSA was positively associated with sex work in initial analyses (β = 1.51, p = .045), but not after adjusting for additional risk factors. When examined by age ranges, only CSA occurring between ages 9-15 significantly predicted sex work (β = 2.84, p = .043), even after adjusting for additional risk factors. Childhood ADHD-C also emerged as a significant predictor (β = 4.94, p = .015). ADHD-related medication and years of education were protective factors only when CSA was considered dichotomously.

CONCLUSIONS

Findings from this exploratory study underscore the need for longitudinal research that (a) considers the developmental timing of CSA and (b) accounts for impulsivity and inattention as risk factors for sex work among young-adult women. Implications for clinical practice are briefly discussed.

Development and validation of a Japanese translation of the K-SF-42

In this study, we conducted the translation and validation of the K-SF-42 in Japan (Figueredo, 2017). The K-SF-42 is a new short form of the Arizona Life History Battery. We obtained empirical evidence that the original seven-factor structure could be applied to the Japanese translated version of K-SF-42 (K-SF-42-J). We also observed good internal consistency of the seven scales of K-SF-42-J. The multi-group confirmatory factor analysis findings suggest that the K-SF-42-J can be used in both sexes and diverse age groups. The K-SF-42-J scales showed similar correlates as the English original, with higher scores of other life history strategy measurement, trait emotional intelligence, well-being, and cultural and social resources in childhood. Use of the K-SF-42-J will allow researchers with Japanese speaking samples to integrate their findings with the existing life history strategy research literature. The brevity of the K-SF-42-J will be appealing to researchers who are concerned about taxing the time and motivation of their participants.

Meta-Analysis of Direct and Indirect Effects of Father Absence on Menarcheal Timing

Despite extensive evidence of the association between father absence and early onset of menarche, whether father absence directly accelerates the onset of menarche or the association is mediated by other negative family psychosocial processes remains unclear. Reliable theories on the basis of which father absence has been investigated also vary. Within the life history (LH) theoretical framework, we conducted a meta-analysis of studies that investigated father absence, menarcheal timing, and various family disturbances that cause stress in children. We tested the hypothesis that father absence exerts a direct effect on menarcheal timing and an indirect effect on menarcheal timing mediated by integrated childhood stress. Quantitative synthesis using a two-stage meta-analytic structural equation modeling approach was applied to test our hypothesis. Based on seven research articles (N = 4,619) that include at least one form of family stressor as well as father absence and menarcheal timing, integrated childhood stress emerged as a robust mediator of the association between father absence and early menarcheal timing, and the total effect of father absence on menarcheal timing had reduced in size after accounting for the mediating effect of childhood stress. The findings emphasize the importance of a father figure in regulating a child's LH, including menarcheal timing.

Life History and Multi-Partner Mating: A Novel Explanation for Moral Stigma Against Consensual Non-monogamy

Life history theory (LHT) predicts that individuals vary in their sexual, reproductive, parental, familial, and social behavior according to the physical and social challenges imposed upon them throughout development. LHT provides a framework for understanding why non-monogamy may be the target of significant moral condemnation: individuals who habitually form multiple romantic or sexual partnerships may pursue riskier, more competitive interpersonal strategies that strain social cooperation. We compared several indices of life history (i.e., the Mini-K, the High-K Strategy Scale, pubertal timing, sociosexuality, disease avoidance, and risk-taking) between individuals practicing monogamous and consensually non-monogamous (CNM) romantic relationships. Across several measures, CNM individuals reported a faster life history strategy than monogamous individuals, and women in CNM relationships reported earlier pubertal development. CNM individuals also reported more social and ethical risk-taking, less aversion to germs, and greater interest in short-term mating (and less interest in long-term mating) than monogamous individuals. From these data, we discuss a model to explain how moral stigma toward non-monogamy evolved and how these attitudes may be mismatched to the modern environment. Specifically, we argue that the culture of sexual ethics that pervades contemporary CNM communities (e.g., polyamory, swinging) may attenuate risky interpersonal behaviors (e.g., violent intrasexual competition, retributive jealousy, partner/child abandonment, disease transmission) that are relatively more common among those who pursue multi-partner mating.