The perils of learning to move while speaking: One-sided interference between speech and visuomotor adaptation

Psychonomic Bulletin & Review - Our understanding of the adaptive processes that shape sensorimotor behavior is largely derived from studying isolated movements. Studies of visuomotor...     

Play enhances visual form perception in infancy–an active training study

Motor experiences and active exploration during early childhood may affect individual differences in a wide range of perceptual and cognitive abilities. In the current study, we suggest that active exploration of objects facilitates the ability to process object forms and magnitudes, which in turn impacts the development of numerosity perception. We tested our hypothesis by conducting a preregistered active exploration intervention with 59 8‐month‐old infants. The minimal intervention consisted of actively playing with and exploring blocks once a day for 8 weeks. In order to control for possible training effects on attention, we used book reading as a control condition. Pre‐ and post‐test assessments using eye‐tracking showed that block play improved visual form perception, where infants became better at detecting a deviant shape. Furthermore, using three control tasks, we showed that the intervention specifically improved infants' ability to process visual forms and the effect could not be explained by a domain general improvement in attention or visual perception. We found that the intervention did not improve numerosity perception and suggest that because of the sequential nature of our hypothesis, a longer time frame might be needed to see improvements in this ability. Our findings indicate that if infants are given more opportunities for play and exploration, it will have positive effects on their visual form perception, which in turn could help their understanding of geometrical concepts.     

Maternal personality and injury in children: is stability a protective factor?

Measures of injury were obtained in a birth cohort of 953 children in Wales along with maternal Eysenck Personality Inventory (EPI) and children's Behaviour Screening Questionnaire (BSQ) data. While there was no relationship between maternal E and child injury, children of low-N mothers had significantly fewer injuries than those of medium of high-N mothers. The magnitude of this trend remained after controlling for the BSQ variables also relating to injury, but was no longer significant in the case of management disorder or of sex. Moreover, while the association was observed for families with only one or two children, this was not the case for families with three or more children.     

Terror management and stereotyping: why do people stereotype when mortality is salient?

Three studies examine two routes by which mortality threats may lead to stereotyping. Mortality salience may activate both a comprehension goal and an enhancement goal. Enhancement goals are likely to be more active in situations where intergroup competition or conflict is salient. If this is not the case, then a comprehension goal will predominate. In line with a why-determines-how logic, when mortality salience activates a comprehension goal, both positive and negative stereotyping occur. In contrast, the activation of an enhancement goal only increases negative stereotyping.     

The development and effectiveness of memory strategies in kindergarten and elementary school: Findings from the Würzburg and Göttingen longitudinal memory studies

This article reports findings of the Würzburg and Göttingen Longitudinal Memory Studies, which focused on children's verbal memory development. The studies started with 102 (German) kindergarten children in Würzburg and 86 second-graders in Göttingen who were tested on various memory measures, including sort-recall, memory capacity, metamemory, and verbal IQ. Assessments were repeated nine times, with adjacent measurement points separated by 6-month time intervals. The main goals of the studies concerned the assessment of utilization deficiencies during the course of strategy development, the analysis of factors influencing the effectiveness of strategy use, and the occurrence of multiple strategy use. Findings confirmed the outcome of previous longitudinal studies in that semantic organization strategies were not always accompanied by superior recall, but utilization deficiency problems were comparably rare. Strategy effectiveness was shown as being affected mainly by memory capacity and by children's tendency to engage in multiple strategy use. However, children did not start to apply multiple strategies effectively until the end of Grade 2.     

Fight-seeking motivation in dating partners with an aggressive relationship

The author studied aggression among dating couples to determine if partners' fight-seeking motivation could explain the phenomenon. Intact dating couples were classified as aggressive if either partner reported having perpetrated 2 or more acts of assaultive violence in the past year. The author asked participants to rate the extent to which they and their partners intentionally physically or verbally fought with one another, felt calmer after physical or verbal conflict with their partners, and sought to increase sensory stimulation by taking part in high-risk activities. Together, these ratings constituted a measure of fight-seeking motivation. Results of a logistic regression analysis showed that couples classified as aggressive (48%) had relationships longer in duration than did nonaggressive couples. In addition, both men and women in aggressive relationships had greater fight-seeking motivation than did individuals in nonaggressive relationships.