The role of mask coherence in motion-induced blindness

Motion-induced blindness (MIB) is the perceived disappearance of a salient target when surrounded by a moving mask. Much research has focused on the role of target characteristics on perceived disappearance by a coherently moving mask. However, we asked a different question: mainly, are there certain characteristics about the mask that can impact disappearance? To address this, we behaviorally tested whether MIB is enhanced or reduced by the property of common fate. In experiments 1, 2, and 3, we systematically manipulated the motion coherence of the mask and measured the amount of target disappearance. Results showed that, as mask coherence increased, perceived target disappearance decreased. This pattern was unaffected by the lifetime of the moving dots, the dot density of the motion stimulus, or the target eccentricity. In experiment 4, we investigated whether the number of motion directions contained in an incoherent mask could account for our findings. Using masks containing 1, 3, and 5 motion directions, we found that disappearance did not increase proportionally to the number of motion directions. We discuss our findings in line with current proposed mechanisms of MIB.     

Motor timing deficits in children with Attention-Deficit/Hyperactivity disorder

Children with Attention-Deficit/Hyperactivity Disorder (ADHD) are thought to have fundamental deficits in the allocation of attention for information processing. Furthermore, it is believed that these children possess a fundamental difficulty in motoric timing, an assertion that has been explored recently in adults and children. In the present study we extend this recent work by fully exploring the classic Wing and Kristofferson (1973) analysis of timing with typically developing children (n=24) and children with ADHD (n=27). We provide clear evidence that not only do children with ADHD have an overall timing deficit, they also time less consistently when using a similar strategy to typically developing children. The use of the Wing and Kristofferson approach to timing, we argue, will result in the discovery of robust ADHD-related timing differences across a variety of situations.     

DOMESTIC VIOLENCE AND WOMEN'S MENTAL HEALTH IN CHILE

Domestic violence against women is a pervasive, global health problem. This study investigates the correlates and psychological outcomes of domestic abuse among women in a semi-industrial country. The participants included 215 mothers residing in working-class communities located on the outskirts of Santiago, Chile. We utilized structural equation modeling to test the hypothesis that poverty and other structural inequalities would be related to incidents of domestic abuse in Chile, as they are in the United States. Our results suggest that lower socioeconomic status, even within poor communities, and stressful life events have a direct relationship to domestic conflict. Domestic abuse was, in turn, associated with women's mental health such that greater domestic conflict was related to higher reports of depressive affect and symptoms of posttraumatic stress disorder. The importance of identifying similarities and differences in the occurrence of domestic violence in developing countries as compared to industrialized countries is discussed.     

Why Fit Doesn't Always Matter: The Impact of HRM and Cultural Fit on Job Involvement of Kenyan Employees

The study investigates whether fit of human resources management (HRM) policies with employees' preferences in developing countries of sub‐Saharan Africa, with specific reference to Kenya, impacts on levels of job involvement. We argue that the contextual variables in developing countries are varied and complex to the extent that organisations operating in these milieux might find that 'fit' as presented in the literature from developed economies does not matter. Further, we examine the role of individual value orientations and organisation value fit to look for a link with job involvement. The study contends that the use of simple difference scores to measure fit is inadequate, and adopts Edwards' (1994) regression technique to analyse fit. Overall, the results indicate that the person–environment (HRM preference with actual policy practice) fit model can partially predict job involvement in a developing country context, but in a way that is not consistent with theory. However, job involvement is not related strongly to either the convergence of an individual's values with those of others in the organisation, or convergence of HRM policies with individual preferences. It is the values themselves—not their fit—that are most predictive of job involvement.     

Evaluations of Clergy Children Versus Non-Clergy Children: Does a Negative Stereotype Exist?

Studies that have been conducted on PKs (children of the clergy) are limited and outdated. But it has been thought that numerous stresses coincide with being a PK. This study tried to document the existence of a negative stereotype of PKs. The participants were 63 college students consisting of 40 Non-PKs and 23 PKs. They were given a mock college application to evaluate and then asked to rate the applicant on various dimensions. The participants rated one of three applicants: PK with bad behavior, PK with good behavior, or non-PK with bad behavior. The bad behavior was a DWI offense. Results indicated limited support of the hypothesis of a negative stereotype of PKs. A separate questionnaire given to the PKs inquiring about the stresses of their lifestyle revealed that PKs do report experiencing a significant amount of stress.