Voluntary action influences visual competition

Converging lines of evidence point to a strong link between action and perception. In this study, we show that this linkage plays a role in controlling the dynamics of binocular rivalry, in which two stimuli compete for perceptual awareness. Observers dichoptically viewed two dynamic rival stimuli while moving a computer mouse with one hand. When the motion of one rival stimulus was consistent with observers' own hand movements, dominance durations of that stimulus were extended and, remarkably, suppression durations of that stimulus were abbreviated. Additional measurements revealed that this change in rivalry dynamics was not attributable to observers' knowledge about the condition under test. Thus, self-generated actions can influence the resolution of perceptual conflict, even when the object being controlled falls outside of visual awareness.     

Attachment to God,Tenure, Race,and Participation in Congregational Life

The vitality of religious congregations is dependent on how effectively they attract congregants and mobilize participation, and people are more likely to participate when they share similar characteristics with other congregants. This study suggests attachment to God is a fundamental “behavioral and intrapersonal characteristic” which distinguishes participants from one another, contributing to varying levels of participation in congregational and religious life beyond service attendance. Using a national sample, we test several hypotheses related to this theoretical claim. Findings suggest that: (1) secure attachment to God is positively associated with congregational participation, (2) anxious and avoidant attachment are negatively associated with participation, (3) these relationships are moderated by length of time attending a particular congregation, and (4) secure attachment is associated with higher levels of participation in congregational life for blacks than it is for whites. By demonstrating a link between attachment to God and participation in congregational and religious life, this study affirms that intrapersonal characteristics structure the dynamics of religious congregations.     

Validity of the SDS-17 measure of social desirability in the American context

In Germany, Stober et al. (1999, 2001) presented evidence for the validity of the SDS-17, a new measure of social desirability bias. In the current investigation, three experiments (n = 800) assessed the SDS-17’s validity in the US environment. In all conditions SDS-17 scores correlated highly with Marlowe–Crowne scores. In Study 1, a group administration of a paper and pencil booklet, SDS-17 scores of 327 college students were higher under Fake Good than Standard conditions, and both were higher than scores in the Honest condition. Study 2, an online survey of a demographically diverse adult sample (n = 257), showed that the increase in SDS-17 scores under Fake Good conditions occurs also in a Web survey and that SDS-17 scores were unrelated to one’s demographic profile. Study 3, a group administration to 216 college students, revealed again that scores under Fake Good were higher than those under Standard administration and that SDS-17 scores correlated more highly with the Impression Management than with the Self-Deception subscales of the BIDR. The SDS-17 appeared valid for the US environment as a measure of socially desirable responding. The evidence, however, encourages its further assessment as an index of social desirability bias per se.     

Detection and discrimination of optical flow components

Observers viewed animation sequences consisting of random dots, some of which moved coherently in a given direction (signal dots) and the rest of which moved randomly (noise dots). Using forced-choice procedures, detectability of weak signals within noise was measured for translation, rotation, and expansion/contraction. Sensitivity to all motion types was approximately equal, with practiced observers reliably detecting coherent motion at signal levels as low as 4%. Observers were able to identify the motion structure presented on a given trial at signal levels corresponding to the detection threshold, implying that the neural signals supporting detection are labeled for motion type. Results are discussed in the context of hierarchical analysis of optic flow in which all motion types are registered as patterns of activity among neurons comprising a single mechanism.     

Is It Still a Movement?

In this address from 1971, the second general secretary of the World Council of Churches (WCC), Eugene Carson Blake, sets out the challenges facing the WCC at the beginning of the 1970s, identifying three key changes within the ecumenical movement: a shift in power and decision making away from the Protestant churches of North America and Western Europe; an organization more representative of churches in Africa, Asia, and Latin America, and of Orthodox churches; and the ecumenical involvement of the Roman Catholic Church. It goes on to set out how the WCC, particularly since its conference on Church and Society held in Geneva in 1966, has been attempting to make Christian faith and morals relevant to a world experiencing rapid social, economic, and political change.     

Effects of Training and Environment on Graduate Students’ Self-Rated Knowledge and Judgments of Responsible Research Behavior

Training programs, departmental/disciplinary norms, and individual factors (e.g., personality traits) have been hypothesized to influence (un)ethical behavior. This exploratory study surveyed graduate students from a single university in the American Southeast. Relationships were examined among 496 participants’ individual characteristics, training, self-rated knowledge and decision-making skills in research conduct, and judgments of ethically questionable vignettes. Key findings include the increased likelihood of unethical action by students in online programs, a negative relationship between age and unethical actions, and a negative relationship between agreeableness and reports that a peer would take an unethical action. Graduate training was unrelated to judgments of ethicality.     

Increasing Behavioral Variability and Social Skill Accuracy in Children with Autism Spectrum Disorder

Although social skills training for children with autism spectrum disorder (ASD) often addresses deficits in social communication, restricted and repetitive social behaviors are less frequently targeted in the literature. The present study evaluated a manualized social skills training program, modified to incorporate lag schedules of reinforcement, to promote appropriate and variable responding in three children in a school setting. Participants attended social skills once weekly, with probes of social skills taking place daily. A multiple baseline design across target skills was used to determine intervention efficacy. Results of the study indicated that the social skills curriculum incorporating lag schedules of reinforcement resulted in substantial increases in the number of appropriate and variable responses demonstrated by participants during each probe session, as well as the number of appropriate and variable responses demonstrated overall.     

Meta-analysis of the efficacy and acceptability of cognitive-behavioural therapy for Arab adult populations experiencing anxiety,depression or post-traumatic stress disorder

A meta-analysis of the literature of cognitive behaviour therapy (CBT) with Arab adult populations experiencing anxiety, depression or post-traumatic stress disorder (PTSD) was conducted. Nine studies (n = 536) met the eligibility criteria. Three of the nine studies (33%) were randomised control trials using waitlist control groups. All studies (100%) reported a statistically significant reduction in psychological symptoms at post-treatment with large effect sizes for anxiety (effect size, 95% confidence interval) (1.44 [1.29, 1.59]), depression (1.26 [1.16, 1.35]) and PTSD (2.08 [1.94, 2.23]). Six out of the nine studies (67%) collated follow-up data and reported that reductions of psychological symptoms were maintained at follow-up. An average dropout rate of 26% indicated good overall acceptability. Five out of nine (55%) of the trials reported diagnostic remission rates and of those trials the mean remission rate was 31%). Five of the nine eligible studies (55%) delivered remotely via Internet or telephone were found to have similar effect sizes as face-to-face CBT. The current meta-analysis indicates the potential of CBT, delivered either face-to-face or via internet, as efficacious and acceptable interventions for the treatment of anxiety, depression and PTSD for Arab adult populations.