Reach tracking reveals dissociable processes underlying inhibitory control in 5‐ to 10‐year‐olds and adults

Researchers have proposed that two processes featuring distinct types of inhibition support inhibitory control: a response threshold adjustment process involving the global inhibition of motor output and a conflict resolution process involving competitive inhibition among co‐active response alternatives. To target the development of these processes, we measured the reaching behavior of 5‐ to 10‐year‐olds (Experiment 1) and adults (Experiment 2) as they performed an Eriksen flanker task. This method provided two key measures: initiation time (the time elapsed between stimulus onset and movement onset) and reach curvature (the degree to which a movement deviates from a direct path to the selected target). We suggest that initiation time reflects the response threshold adjustment process by indexing the degree of motoric stopping experienced before a movement is started, while reach curvature reflects the conflict resolution process by indexing the degree of co‐activation between response alternatives over the course of a movement. Our results support this claim, revealing different patterns effects in initiation time and curvature, and divergent developmental trajectories between childhood and adulthood. These findings provide behavioral evidence for the dissociation between global and competitive inhibition, and offer new insight into the development of inhibitory control.     

Role of fresh start mindset framing in reducing stigma and promoting mental health help-seeking behavior

One challenge in promoting mental health help-seeking behaviors is the masculine norm ingrained in the U.S. Using experimental data, this article examines how fresh start mindset (FSM) framing can be effective in helping reduce the stigma associated with mental health help-seeking behaviors and increase the promotion of positive attitudes and word-of-mouth of the mental health messages among men (vs. women). This study uniquely reveals that FSM framing in mental health ad campaigns might help men switch from the mindset that mental health help-seeking behaviors equate to showing weakness to one of help-seeking behaviors as a fresh start. Further, this study demonstrates that males with high issue involvement levels and females with low issue involvement levels respond to FSM framing more favorably. Thus, issue involvement levels form the critical boundary conditions. The authors also reveal that attitudes toward the ads operate as an underlying mechanism in FSM framing effects on responses.     

Who is and who is not willing to use online employer‐provided retirement investment advice

This study used classification tree analysis to examine who is and who is not willing to use online employer‐provided retirement investment advice. Using data from the Retirement Confidence Survey (Employee Benefit Research Institute, 2004), the study focused on who was more likely to use online retirement investment advice when it was available from their employer. Results indicated that those who were younger, those who participated in a defined contribution retirement plan, and those who made joint (with someone else in their household) personal finance decisions were more likely to use online professional retirement investment advice.     

Children's Attitudes towards Peers with Disabilities: Associations with Personal and Parental Factors

The purpose of this study was to investigate the following: (i) associations among children's prior contact with people with disabilities and the three dimensions of children's attitudes towards people with disabilities: children's understanding of and their feelings about people with disabilities and their behavioural intentions to make inclusion decisions; (ii) the relation between children's behavioural intentions to make inclusion decisions and the demands of activity contexts and the types of disabilities; and (iii) the association between parents' attitudes and children's attitudes. Participants included 94 typically developing four‐ and five‐year‐old preschoolers. Children's understanding of disabilities and their prior contact with people with disabilities were found to be positively related to their feelings about people with disabilities; children's understanding of disabilities was a significant moderator of the relation between their behavioural intentions and activity contexts or types of disabilities. The hypothesized association between parents' attitudes and children's attitudes was not significant. Preschoolers may benefit from having more regular contact with people with disabilities to develop positive feelings towards their peers with disabilities, which is also related to their understanding of disabilities. Children's behavioural intentions to make inclusion decisions need to be understood in relation to their understanding of disabilities, the demand of activity contexts, and types of disabilities. Copyright © 2013 John Wiley & Sons, Ltd.     

The Cognitive Social Network in Dreams: Transitivity,Assortativity, and Giant Component Proportion Are Monotonic

For five individuals, a social network was constructed from a series of his or her dreams. Three important network measures were calculated for each network: transitivity, assortativity, and giant component proportion. These were monotonically related; over the five networks as transitivity increased, assortativity increased and giant component proportion decreased. The relations indicate that characters appear in dreams systematically. Systematicity likely arises from the dreamer's memory of people and their relations, which is from the dreamer's cognitive social network. But the dream social network is not a copy of the cognitive social network. Waking life social networks tend to have positive assortativity; that is, people tend to be connected to others with similar connectivity. Instead, in our sample of dream social networks assortativity is more often negative or near 0, as in online social networks. We show that if characters appear via a random walk, negative assortativity can result, particularly if the random walk is biased as suggested by remote associations.     

When leader–member exchange differentiation improves work group functioning: The combined roles of differentiation bases and reward interdependence

Drawing on social hierarchy theory, we develop a contingency model of leader–member exchange (LMX) differentiation in which LMX differentiation is positively and negatively related to group cooperation and group social undermining, respectively, when it is based on the group members’ performance, but the relations are reversed (i.e., negative and positive, respectively) when it stems from a leader's personal liking of the members. In addition, we propose that the moderating effects of the performance and personal liking bases of LMX differentiation are magnified by the levels of reward interdependence. Specifically, under a high (vs. low) level of reward interdependence, LMX differentiation based on performance more strongly relates to high group cooperation and low group social undermining, whereas LMX differentiation with a personal liking basis is more likely to decrease group cooperation and increase group social undermining. Group cooperation and social undermining are then hypothesized to convey the three‐way interactive effects of LMX differentiation, its two bases, and reward interdependence on subsequent group performance. Analyses of data from 328 sales groups of a large retailer support the core part of our contingency model of LMX differentiation.     

Mothers' and Fathers' Parenting Quality and Toddlers' Interactive Behaviours in Dyadic and Triadic Family Contexts

Based on a family systems perspective, this research examined the role of parental gender and family play context in parent–toddler interactions and how behaviours of family members influence each other. Sixty‐seven mostly White, middle‐class families consisting of a mother, father and toddler were videotaped in three separate sessions: mother–child, father–child and both parents–child at a university laboratory setting. The results indicated that there were significant main effects of both parent gender (mother versus father) and context (dyadic versus triadic) on parents' positive and negative parenting and children's engagement and negativity toward parents. Higher levels of mutual engagement between mothers and toddlers were associated with lower levels of fathers' positive parenting and children's engagement with fathers, when moving from the dyadic to the triadic play context. However, fathers' mutual engagement with toddlers was not associated with mothers' parenting quality and child interactive behaviours with mothers. There were also interaction effects of parent gender and context on parents' negative parenting and children's engagement and negativity toward parents. This study adds unique insights to the differences and similarities of parent–child dyadic and triadic interactions during toddlerhood. Copyright © 2012 John Wiley & Sons, Ltd.     

Age-related differences in the brain areas outside the classical language areas among adults using category decision task

Older adults perform much like younger adults on language. This similar level of performance, however, may come about through different underlying brain processes. In the present study, we evaluated age-related differences in the brain areas outside the typical language areas among adults using a category decision task. Our results showed that similar activation patterns were found in classical language processing areas across the three age groups although regional lateralization indices in Broca’s and Wernicke’s areas decreased with age. The greatest differences, however, among the three groups were found primarily in the brain areas not associated with core language functioning including the hippocampus, middle frontal gyrus, ventromedial frontal cortex, medial superior parietal cortex and posterior cingulate cortex. Therefore, the non-classical language areas may exhibit an age-related difference between three age groups while the subjects show a similar activation pattern in the core, primary language processing during a semantic decision task.     

Feeling the weight of calories: using haptic feedback as virtual exemplars to promote risk perception among young females on unhealthy snack choices

ABSTRACT

Virtual simulations allow users to feel and manipulate objects as they would in the physical world. Guided by exemplification theory and risk communication research, a virtual exemplar was developed to allow users to feel the weight of the caloric density of unhealthy snacks (e.g., potato chips) to heighten risk perceptions on snack choices. A 3 (base-rate statistics, print exemplar, virtual exemplar) × 3 (Time 1, Time 2, Time 3) mixed design experiment (N = 152) compared the effect of three mediated modes of delivering health information at baseline, immediately after, and 1 week after treatments. Virtual exemplars led to greater spatial presence, issue involvement, and recommended health behavior than did base-rate statistics or print exemplars, but had no effect on perceived vividness. Heightened perceived susceptibility following virtual exemplars persisted for 1 week. Findings emphasized the importance of spatial presence elicited by an exemplar in heightening the perceived susceptibility of health risks both immediately after and 1 week after exposure. The role of spatial presence and vividness in the context of virtual exemplars that afford the illusion of firsthand experiences is discussed and compared against traditional exemplification research that has focused on the impact of secondhand experiences.     

Multilevel multidimensional item response model with a multilevel latent covariate

In a pre‐test–post‐test cluster randomized trial, one of the methods commonly used to detect an intervention effect involves controlling pre‐test scores and other related covariates while estimating an intervention effect at post‐test. In many applications in education, the total post‐test and pre‐test scores, ignoring measurement error, are used as response variable and covariate, respectively, to estimate the intervention effect. However, these test scores are frequently subject to measurement error, and statistical inferences based on the model ignoring measurement error can yield a biased estimate of the intervention effect. When multiple domains exist in test data, it is sometimes more informative to detect the intervention effect for each domain than for the entire test. This paper presents applications of the multilevel multidimensional item response model with measurement error adjustments in a response variable and a covariate to estimate the intervention effect for each domain.