Effects of Age on Dual-Task Walking While Listening

This study examined the effects of age on single- and dual-task listening and walking during virtual street crossing. Seventeen younger and 12 older adults participated. In each listening trial, three sentences were presented simultaneously from separate locations. Participants were instructed to report the target sentence. Predictability of the target sentence location was varied. Treadmill walking was measured using motion analysis. Measures included word recognition accuracy, head and trunk angles, and spatiotemporal gait parameters. Older adults exhibited a more upright head alignment and less variability in stride time during dual-tasking, particularly under less certain target sentence location conditions. Younger adults’ walking was unaffected by dual-task demands. Together, the results indicate greater postural prioritization in older adults than young.     

Scaffolding agency: A proleptic account of the reactive attitudes

This paper examines the methodological claim made famous by P. F. Strawson: that we understand what features are required for responsible agency by exploring our attitudes and practices of holding responsible. What is the presumed metaphysical connection between holding responsible and being fit to be held responsible that makes this claim credible? I propose a non‐standard answer to this question, arguing for a view of responsible agency that is neither antirealist nor straightforwardly realist. It is instead “constructivist.” On the “Scaffolding View” I defend, reactive attitudes play an essential role in developing, supporting, and thereby maintaining the capacities that make for responsible agency. Although this view has relatively novel implications for a metaphysical understanding of capacities, its chief virtue, in contrast with more standard views, is in providing a plausible defense of why so‐called “responsible agents” genuinely deserve to be treated as such.     

Sex differences in ADHD trajectories across childhood and adolescence

Previous studies have hinted at sex differences in developmental trajectories in ADHD symptoms; however, little is known about the nature or cause of these differences and their implications for clinical practice. We used growth mixture modelling in a community‐ascertained cohort of n = 1,571 participants to study sex differences in ADHD symptom developmental trajectories across the elementary and secondary school years. Participants were measured at ages 7, 8, 9, 10, 11, 12, 13, and 15. We found that females were more likely to show large symptom increases in early adolescence while males were more likely to show elevated symptoms from childhood. For both males and females, early adolescence represented a period of vulnerability characterized by relatively sudden symptom increases. Females affected by hyperactivity/impulsivity may be more likely to be excluded from diagnosis due to current age of onset criteria. More attention should be paid to early adolescence as a period of risk for hyperactivity/impulsivity symptom onset or worsening.     

Impact of maternal adverse childhood experiences on child socioemotional function in rural Kenya: Mediating role of maternal mental health

Mothers in low‐ and middle‐income countries (LMIC) suffer heightened vulnerability for adverse childhood experiences (ACEs), which is exacerbated by the multitude of risk factors associated with poverty and may lead to increased risk of psychiatric disorder. The constellation of complex, co‐occurring biological, environmental, social, economic and psychological risk factors are in turn transmitted to her child, conferring vulnerability for adverse development. This study examines the association between maternal intra‐ and extra‐familial ACEs, maternal education and the mental health of her child, mediated by maternal mental health. Mother‐child dyads (n = 121) in Machakos, Kenya were examined cross‐sectionally using self‐report measures of ACEs, maternal mental health and child internalizing and externalizing mental health problems. The four models proposed to examine the relationship between intra‐ and extra‐familial maternal ACEs and child internalizing and externalizing problems demonstrated indirect pathways through maternal mental health. These effects were found to be conditional on levels of maternal education, which served as a protective factor at lower levels of maternal ACEs. These models demonstrate how the impact of ACEs persists across the lifespan resulting in a negative impact on maternal mental health and conferring further risk to subsequent generations. Elucidating the association between ACEs and subsequent intergenerational sequelae, especially in LMIC where risk is heightened, may improve targeted caregiver mental health programs for prevention and intervention.     

Breaking gendered boundaries? Exploring constructions of counter-normative body hair practices in Āotearoa/New Zealand using story completion

ABSTRACT

Do women with body hair continue to evoke disgust? Are men without body hair read only as athletes and/or gay? To explore contemporary sense-making practices around apparently counter-normative gendered body hair practice, we developed a two-stem story completion task. We collected stories from 161 undergraduate students (129 women and 32 men) about David, who had decided to start removing body hair, and Jane, who had decided to stop removing body hair. We analysed the data thematically within a constructionist framework, resulting in three themes: secrecy and shame; the personal benefits of going against the grain; and the personal is political. The personal benefits theme included four distinct (gendered) subthemes: increased heterosexual attractiveness; increased sporting prowess; removal of a hassle; and liberation from conformity. These story data gave access to familiar but also somewhat different accounts than those collected through typical self-report measures.     

Young Deceivers: Executive Functioning and Antisocial Lie‐telling in Preschool Aged Children

The present study examined the emergence of antisocial lie‐telling in very young children. Lie‐telling was studied in relation to executive functioning skills and children's abilities to identify both truths and lies. A total of 65 children (M_{age in months} = 31.75, SD = 1.87) participated in a modified temptation resistance paradigm (TRP; designed to elicit spontaneous lies). Executive functioning was measured through an inhibitory control task and a forward search planning task. The Truth/Lie Identification task was administered (Lyon, Carrick, & Quas, 2010 ) to measure children's abilities to accurately distinguish truths and lies. During the TRP, a total of 89.23% children peeked at the toy when a research assistant left the room, and of those children, 29.31% lied to the research assistant. Significant differences on executive functioning measures were found between lie‐tellers and confessors, as well as for the Truth/Lie Identification task. Lie‐tellers had higher scores on measures of inhibitory control and forward search planning. Lie‐tellers also had higher accuracy on the Truth/Lie Identification task than confessors. This study provides a unique contribution to the literature by examining 2.5‐year‐old children's emerging lie‐telling abilities, a relatively understudied age during which fledgling lie‐telling emerges. Copyright © 2016 John Wiley & Sons, Ltd.     

A novel indirect method for capturing involuntary musical imagery under varying cognitive load

Involuntary musical imagery (INMI), i.e the internal experience of a repetitive musical fragment, is one of the most ubiquitous forms of spontaneous cognition. Findings regarding the relationship between INMI and cognitive load are conflicting. In the present study, 200 participants watched and evaluated two non-dialogue, music-only film trailers. Subsequently, they either closed their eyes for 5 min (baseline), or engaged in one of three dot tasks of varying challenge and attentional demand (low, medium, and high cognitive load). Finally, they completed a novel “Mind Activity Questionnaire”, which allows for indirect INMI sampling rather than direct questioning. The same questionnaire was completed 24 hours later. Overall, a significant negative linear trend was found. At baseline, 65% of people reported experiencing INMI. This rate decreased to 32.5% in the low load condition with further reductions observed in the medium and high conditions, which did not differ significantly from each other. INMI frequency and duration followed the same pattern as the induction rates. In the 24-hour follow-up, 21% of participants reported INMI experiences. This study supports the hypothesis that INMI occurrence, frequency, and duration relate to spare cognitive capacity and demonstrates an ecologically valid laboratory paradigm for covertly inducing and documenting INMI experiences.     

THE SCIENTIFIC CHARACTER OF PHILIP HEFNER'S “CREATED CO‐CREATOR”

Philip Hefner's understanding of humans as “created co‐creators” has played a key role in the science and religion field, particularly as scholars consider the implications of emerging technologies for the human future. Hefner articulates his “created co‐creator” framework in the form of scientifically testable hypotheses supporting his core understanding of human nature, adopting the structure of Imre Lakatos's scientific research programme. This article provides a brief exposition of Hefner's model, examines his hypotheses in order to assess their scientific character, and evaluates them against the relevant findings of contemporary science. While Hefner's model is largely commensurate with contemporary science, he at times makes claims that cannot be scientifically falsified or corroborated. Hefner's accomplishments in demonstrating the scientific compatibility of many theological notions is admirable; however, his overall position would be strengthened with a more tacit acknowledgment of the limitations of scientific knowledge. His anthropology draws also from extrascientific commitments and is all the richer for it.