Stepping Responses in Young and Older Adults Following a Perturbation to the Support Surface During Gait

The objective of this work was to investigate the influence perturbation direction has on postural responses during overground gait, and whether these responses are age related. Differences in stepping patterns following perturbations of the support surface were examined in the frontal and sagittal planes during forward walking. Eleven young and 10 older adults completed Mini BESTest, hip strength tests, and 45 perturbed walking trials, triggered on heel contact. Lateral perturbations were more challenging to postural stability for both groups. Step length measures showed young adults recovered in the step proceeding the perturbation, while older adults needed additional steps to regain balance. Young adults arrested center of mass movement by producing larger step widths than older adults following the support surface perturbation.     

Children's preference for mixed‐ versus fixed‐ratio schedules of reinforcement: A translational study of risky choice

Laboratory research has shown that when subjects are given a choice between fixed‐ratio and bi‐valued mixed‐ratio schedules of reinforcement, preference typically emerges for the mixed‐ratio schedule even with a larger ratio requirement. The current study sought to replicate and extend these findings to children's math problem completion. Using an ABCBC reversal design, four fourth‐grade students were given the choice of completing addition problems reinforced on either a fixed‐ratio 5 schedule or one of three mixed‐ratio schedules; an equivalent mixed‐ratio (1, 9) schedule, a mixed‐ratio (1, 11) schedule with a 20% larger ratio requirement, and an equally lean mixed‐ratio (5, 7) schedule without the small fixed‐ratio 1 component. This was followed by a reversal back to the preceding phase in which preference for the mixed‐ratio schedule had been observed, and a final reversal back to the mixed‐ratio (5, 7) phase. Findings were consistent with previous research in that all children preferred the mixed‐ratio (1, 9) schedule over the equivalent fixed‐ratio 5 schedule. Preference persisted for the leaner mixed‐ratio (1, 11) schedule for three of the four children. Indifference or preference for the fixed‐ratio 5 alternative was observed in phases containing the mixed‐ratio (5, 7) schedule. These results extend previous research on risky choice to children's math problem completion and highlight the importance of a small ratio component in the emergence of preference for bi‐valued mixed‐ratio schedules. Implications of these results for arranging reinforcement to increase children's academic responding are discussed.     

A Retrospective Examination of Child Protection Involvement Among Young Adults Accessing Homelessness Services

Childhood maltreatment is associated with a variety of young adult adversities including homelessness. This study used linked administrative records to develop a population‐level, epidemiological characterization of the child protection histories of young adults accessing homelessness services. The records of all 17‐ to 24‐year‐olds receiving homeless services between 2011 and 2014 in San Francisco County, California (n = 2241) were probabilistically linked to statewide child protective service (CPS) records. Findings document that 50.0% of young adults had been reported for maltreatment at least once during childhood, yet the prevalence of past CPS involvement varied across demographic and child welfare characteristics. Homeless female youth were significantly more likely to have a CPS history than male youth (58.1% vs. 41.5%). Nearly twice as many Black clients accessing homelessness services had a CPS history as did White clients (59.8% vs. 31.8%). Roughly half (47.3%) of those with a childhood history of reported maltreatment had been last reported for maltreatment in another California county. Targeting services that address past trauma and instability among homeless young adults may be justified given the prevalence of CPS history in this population.     

Motives and Barriers for Physical Activity among Low-Income Black Single Mothers

Physical activity is associated with positive health outcomes, yet previous evidence suggests that single mothers, Black women, and those with low-income levels have low rates of physical activity. The purpose of the present study was to examine health status, as well as barriers and motives for physical activity, among low-income, Black single mothers from an intersectionality framework. Participants (n = 32) in this cross-sectional, mixed methods study completed questionnaires to assess physical activity, health status, stress, and barriers to physical activity and then participated in one of six focus groups to explore physical activity motives and barriers. Although participants reported many risk factors for disease including obesity, stress, and family disease history, most participants were not engaging in behaviors that would improve health such as regular leisure-time physical activity. Participants cited being a role model, stress relief, and weight loss as motives for physical activity that were connected to their social identities as low-income, Black single mothers. Chronic stress and stressors, responsibilities associated with single motherhood, and lack of social and community supports were described as barriers to physical activity. Future researchers and practitioners should consider these specific motives and barriers when designing interventions to increase physical activity among low-income, Black single mothers. We recommend that these programs focus on: promoting motives for physical activity that are meaningful and specific to this subpopulation of mothers, reducing stress, and enhancing affordable physical activity opportunities in the community for single mothers and their children.     

Contextualized personality measures in employee selection: Extending frame‐of‐reference research with job applicant samples

This study compared contextualized and non‐contextualized personality measures in operational hiring situations, unlike previous research which has largely relied on student or job incumbent samples. Comparisons were made with regard to (A) the frames‐of‐reference adopted by applicants when responding to the measures, (B) relations with subsequent employment interview scores, (C) applicant reactions, and (D) mean scores for the personality scales. The findings highlight potential concerns with using non‐contextualized personality measures for employee selection, as job applicants will likely adopt various frames‐of‐reference unrelated to the intended focus of measurement (i.e., work). Results also indicated that it may be premature to assume contextualized measures elicit improved applicant reactions despite their apparent job‐relatedness. The discussion concludes with suggested directions for future research.     

A Comparison of Christians’ Concepts of Jesus Christ and God

In the god concept literature, little research has been conducted on how people think about and relate specifically to Jesus Christ. This study addresses the extent to which Christians distinguish between Jesus and God in terms of their concepts of Jesus and God, the pathways they use to connect with Jesus and God, and the benefits they seek and receive from Jesus and God. The study also tests whether participants’ concepts of Jesus have unique predictive power for psychological, social, and spiritual criterion variables after controlling for their concepts of God. The sample includes 165 college students and 107 church attendees who self-identified as Christians. Results indicate that although most participants view Jesus and God as being similar to each other, they perceive Jesus to be warmer but less transcendent and stern than God. Including participants’ concepts of Jesus in hierarchical multiple regressions accounted for significant additional variance after controlling for their concepts of God in predicting participants’ negative affect, social justice attitudes, spiritual emotions, and Christian orthodoxy. Participants generally used various pathways more to connect with God than with Jesus, and they reported seeking and receiving many benefits more from God than from Jesus. These results suggest that future research on god concepts among Christians ought to include separate measures of Jesus concepts and God concepts.     

Couple Conflict in Parents of Children with versus without Autism: Self-Reported and Observed Findings

We compared the couple conflict of parents of children with autism spectrum disorder (ASD) to a comparison group of parents of children without disabilities using self-reported and observational measures. In total, 178 couples who had a child with ASD (aged 5–12 years) and 174 couples who had children without disabilities (aged 5–12 years), recruited from a Midwestern state in the United States, reported on couple conflict in everyday life and engaged in an observed couple conflict interaction. Parents of children with ASD reported more frequent, severe, and unresolved couple problems than the comparison group. Parents who had a child with ASD were observed to have less engaged, balanced, and cooperative couple conflict interactions, but demonstrated more positive affect and sensitivity towards one another, than parents in the comparison group. Group differences had small effect sizes. Findings have implications for marital therapy and relationship education programs.