An Analysis of Air-Stepping in Normal Infant Vervet Monkeys

Limb movements during air-stepping were analyzed in three neonatal vervet monkeys over a three-week period. The movements had similar temporal organization both across animals and across time. For example, the duration of both the hind and the forelimb cycle equaled about 500 ms, with the hind limb return strokes lasting much longer than the hind limb power strokes. Furthermore, there were clear indications of both intra- and interlimb coordination. Specifically, all the joints of a limb tended to flex and extend simultaneously, and contralateral and ipsilateral limb pairs had an average phase relationship of approximately 50% of cycle duration. Despite a qualitative similarity between limb movements during air-stepping in the neonates and overground locomotion in older animals, there were notable differences both in temporal relationships and joint displacement patterns. Finally, there appeared to be important similarities between air-stepping in these monkeys and stepping in newborn humans. Most notably, both tended to disappear after a limited period. The implications of these similarities, as well as the overall results, are discussed in relation to the understanding of the development of locomotor behavior in human and nonhuman primates, using approaches based both upon the hard-wired and dynamic models.     

Looking sharp: Becoming a search template boosts precision and stability in visual working memory

Visual working memory (VWM) plays a central role in visual cognition, and current work suggests that there is a special state in VWM for items that are the goal of visual searches. However, whether the quality of memory for target templates differs from memory for other items in VWM is currently unknown. In this study, we measured the precision and stability of memory for search templates and accessory items to determine whether search templates receive representational priority in VWM. Memory for search templates exhibited increased precision and probability of recall, whereas accessory items were remembered less often. Additionally, while memory for Templates showed benefits when instances of the Template appeared in search, this benefit was not consistently observed for Accessory items when they appeared in search. Our results show that becoming a search template can substantially affect the quality of a representation in VWM.     

The effects of arousal reappraisal on stress responses,performance and attention

Background and Objectives: This study examined the effects of arousal reappraisal on cardiovascular responses, demand and resource evaluations, self-confidence, performance and attention under pressurized conditions. A recent study by Moore et al. [2015. Reappraising threat: How to optimize performance under pressure. Journal of Sport and Exercise Psychology, 37(3), 339–343. doi:10.1123/jsep.2014-0186] suggested that arousal reappraisal is beneficial to the promotion of challenge states and leads to improvements in single-trial performance. This study aimed to further the work of Moore and colleagues (2015) by examining the effects of arousal reappraisal on cardiovascular responses, demand and resource evaluations, self-confidence, performance and attention in a multi-trial pressurized performance situation.

Design and Methods: Participants were randomly assigned to either an arousal reappraisal intervention or control condition, and completed a pressurized dart throwing task. The intervention encouraged participants to view their physiological arousal as facilitative rather than debilitative to performance. Measures of cardiovascular reactivity, demand and resource evaluations, self-confidence, task performance and attention were recorded.

Results: The reappraisal group displayed more favorable cardiovascular reactivity and reported higher resource evaluations and higher self-confidence than the control group but no task performance or attention effects were detected.

Conclusion: These findings demonstrate the strength of arousal reappraisal in promoting adaptive stress responses, perceptions of resources and self-confidence.     

Helping behavior in a rural and an urban setting: professional and casual attire

This study assessed differences in helping behavior in a rural versus an urban location when directed toward either a professionally or a casually dressed woman. Convenience samples included 40 men and 40 women (10 people of each sex assigned to each condition: rural and professional, rural and casual, urban and professional, and urban and casual). A 21-yr.-old female confederate dropped an envelope near each target helper individually and recorded number of seconds for the target helper to retrieve or point out the dropped item. Analysis indicated significantly faster helping occurred in the rural than in the urban location and that men helped the confederate more often than women. No difference in frequencey of help was related to kind of attire.     

On blowing trumpets to the tulips: to prove or not to prove the null hypothesis--comment on Bösch, Steinkamp, and Boller (2006)

The H. B?sch, F. Steinkamp, and E. Boller meta-analysis reaches mixed and cautious conclusions about the possibility of psychokinesis. The authors argue that, for both methodological and philosophical reasons, it is nearly impossible to draw any conclusions from this body of research. The authors do not agree that any significant effect at all, no matter how small, is fundamentally important (B?sch et al., 2006, p. 517), and they suggest that psychokinesis researchers focus either on producing larger effects or on specifying the conditions under which they would be willing to accept the null hypothesis.     

Comparing to perfection: How cultural norms for appearance affect social comparisons and self-image

Theory and research suggests that cultural norms for appearance present unrealistic standards of beauty which may contribute to women's body dissatisfaction. In Study 1, women described their appearance more negatively than men and made more upward social comparisons about their bodies, but not about other domains. Women also compared more than men with unrealistic targets (e.g., models). In Study 2, we explored the role of cultural norms for appearance in social comparisons with relevant (peer) or irrelevant (model) superior targets. When cultural norms were not salient, participants judged a peer to be more relevant, compared more with the peer, and were more negatively affected by the peer. However, when cultural norms were salient, participants judged a professional model to be equally relevant, compared more with the model and felt worse after exposure to the model. We discuss the powerful role of cultural norms in determining social comparison processes and self-appraisals.     

Virtual reality exposure therapy and standard (in vivo) exposure therapy in the treatment of fear of flying

This controlled clinical trial tested virtual reality exposure (VRE) therapy for the fear of flying (FOF), a relatively new and innovative way to do exposure therapy, and compared it to standard (in vivo) exposure therapy (SE) and a wait list (WL) control with a 6- and 12-month follow-up. Eighty-three participants with FOF were randomly assigned to VRE, SE, or WL. Seventy-five participants, 25 per group, completed the study. Twenty-three WL participants completed randomly assigned treatment following the waiting period. Treatment consisted of 4 sessions of anxiety management training followed either by exposure to a virtual airplane (VRE) or an actual airplane at the airport (SE) conducted over 6 weeks. Results indicate that VRE was superior to WL on all measures, including willingness to fly on the posttreatment flight (76% for VRE and SE; 20% for WL). VRE and SE were essentially equivalent on standardized questionnaires, willingness to fly, anxiety ratings during the flight, self-ratings of improvement, and patient satisfaction with treatment. Follow-up assessments at 6 and 12 months indicated that treatment gains were maintained, with more than 70% of respondents from both groups reporting continued flying at follow-up. Based on these findings, the use of VRE in the treatment of FOF was supported in this controlled study, suggesting that experiences in the virtual world can change experiences in the real world.     

Expect the unexpected: ability, attitude, and responsiveness to hypnosis

Participants' expectancies and hypnotic performance throughout the course of a standardized, individually administered hypnotic protocol were analyzed with a structural equation model that integrated underlying ability, expectancy, and hypnotic response. The model examined expectancies and ability as simultaneous predictors of hypnotic responses as well as hypnotic responses as an influence on subsequent expectancies. Results of the proposed model, which fit very well, supported each of the 4 major hypothesized effects: Expectancies showed significant stability across the course of the hypnosis protocol; expectancies influenced subsequent hypnotic responses, controlling for latent ability; hypnotic responses, in turn, affected subsequent expectancies; and a latent trait underlay hypnotic responses, controlling for expectancies. Although expectancies had a significant effect on hypnotic responsiveness, there was an abundance of variance in hypnotic performance unexplained by the direct or indirect influence of expectation and compatible with the presence of an underlying cognitive ability.     

Perceived organizational support and perceived external prestige: predicting organizational attachment for university faculty, staff, and administrators

The present article introduces a social-exchange model of organizational attachment incorporating both direct exchange and indirect exchange. Participants were 325 university employees. The present results indicated that perceived organizational support (POS) and perceived external prestige (PEP) both contribute to organizational attachment. Further, the results showed that the extent to which POS and PEP are related to organizational attachment is moderated by occupational proxies of cosmopolitan-local role orientation. POS was more strongly related to the affective commitment and withdrawal cognitions of staff and administrators than to those of faculty. PEP was more strongly related to affective commitment and withdrawal cognitions of university faculty than to those of university staff and administrators. The authors discussed the need to incorporate relational variables such as PEP into other social-exchange frameworks.