Demonstrating the temporal modulation transfer function

A 120-frame movie, which can be downloaded from specified web sites, allows an observer to see the qualitative form of his or her temporal modulation transfer function. Results collected from two of the authors are presented.     

INTERLOCUTION,PERCEPTION, AND MEMORY

Philosophical Studies -     

Effect of stimulus duration on stereo and vernier displacement thresholds

Stereo and vernier thresholds were determined as a function of stimulus duration in both misalignment and displacement paradigms. All four thresholds increase as stimulus duration decreases. The increase is greatest for the stereo displacement threshold, less for the vernier displacement threshold, and least for the misalignment thresholds. The results are consistent with the hypothesis that depth signals are averaged over time.     

Support for Gun Control: the Influence of Personal,Sociotropic, and Ideological Concerns1

Two random telephone surveys were conducted-one in Evanston, Illinois and one in Morton Grove, Illinois-to assess the motivations underlying public support for handgun control. The data from both surveys suggested that such support was linked most strongly to citizen beliefs about the effect of a handgun ban on the overall crime rate. Little support was found for either the suggestion that gun control opposition is linked to concerns about personal protection against crime or for the suggestion that views about gun control are part of a more general ideological orientation.     

DIVERGENT PROBLEM SOLVING

On compare les performances d'adolescents hindous (N = 70) et américains (N = 94) habitant des bourgs agricoles, dans deux épreuves de créativité (divergent thinking). Les résultats montrent que les sujets américains donnent plus de réponses nouvelles aux problèmes, tandis que les Hindous répondent de façon routinière, ce qui ne convient pas aux tâches proposées. On peut interpréter ces différences de deux manières: ou bien c'est l'environnement pris globalement qui entraîne une capacité différentielle à penser de façon créatrice; ou bien il s'agit d'une influence spécifique de la maison et de l'école. Une réplique partielle de la première étude a été réalisée à New Delhi (Inde): le milieu urbain présente des ressemblances avec l'environnement global des adolescents américains, tout en conservant les traditions hindoues en matière d'habitat et d'école. Les résultats sont en faveur de l'hypothèse selon laquelle ce sont les différences dans l'environnement global qui influent sur la créativité.     

A solid-state device for eliminating electrical noise and biopotentials in electromyographic (EMG) recordings

A small, low-cost, integrated circuit device is described. This circuit reduces electrical noise, such as that produced from a poor electrode-skin interface and power-line interference (60 Hz). Advantages of this device, with regard to use in electrically noisy environments and with long cables, are discussed.     

Discrimination and Eating Disorder Psychopathology: A Meta-Analysis

Eating disorders occur in diverse populations, and discrimination may be a specific factor that is related to higher eating disorder psychopathology among marginalized individuals. To evaluate the current evidence on this topic, a meta-analysis was used to quantitatively synthesize the literature on discrimination and eating disorder psychopathology across a heterogeneous range of studies. Searches were conducted in peer-reviewed journals and accessible unpublished dissertations of all years through January 2020. Studies were coded by two authors using a tailored coding form, and zero-order bivariate correlations were used as effect size measures. There were 55 cross-sectional studies extracted for inclusion in the meta-analysis. Results showed a small-to-medium association between discrimination and eating disorder psychopathology that was consistent across domains. Effect sizes were typically higher for weight discrimination. For binge eating and general eating disorder pathology, effects were smaller in studies that had larger proportions of women, and for binge eating only, effects were higher in college samples. These findings could suggest that discrimination represents a contributory factor related to eating disorder psychopathology across types of discrimination and eating disorder psychopathology. Implications are discussed for future research on discrimination and psychopathology including possible mechanisms.     

Social and emotional outcomes of childhood sexual abuse: A review of recent research

A total of 41 articles examined the social and emotional outcomes of childhood sexual abuse. The outcomes examined included suicide and substance use, gang involvement, pregnancy, running away, post-traumatic stress disorder (PTSD), risky sexual behavior, and behavioral problems. Results for each of these outcomes tended to vary by developmental period. However, problems of internalizing and externalizing behavior appeared to be specific to sexually abused children of all age groups. Some studies found differences in outcome according to gender, race, and age. Although findings related to abuse characteristics were found to vary from study to study, severity of the abuse, use of force, and victim's relationship to the perpetrator were found to be especially important. Other factors, such as family support and parental monitoring, were found to mitigate a negative outcome. Limitations are discussed along with suggestions for future research.