The choices and preferences of nursery school children

After a period of equal reinforcement for choices of any job revealed which of 10 jobs each of 24 preschool children preferred and did not prefer, token payment became dependent on particular choices. Some children received tokens only for choosing previously non-preferred jobs, others for choosing previously preferred jobs. When tokens depended on choosing the nonpreferred jobs, those came to be preferred. When tokens depended on choosing the preferred jobs, the preferences were strengthened. The effects were replicated both within and between subjects, except in the case of one boy who consistently avoided token pay.     

Relationship between birth order and leadership style for nursery school children

36 nursery school children were given a revised form of Fiedler's (1967) least preferred co-worker scale designated as the least preferred playmate scale. The purpose was to investigate the relationship between least preferred playmate scores and the birth order of young children. A 2 X 2 contingency table was constructed between birth order (first and later born) and leadership style (high and low). The resulting chi squares were insignificant for the total population and for males. However, for females the results were significant with a higher percentage of firstborns being task-oriented (low score) and a higher percentage of later borns being relation-oriented (high score).     

Sequential transfer to related oddity problems by nursery school children

The initial learning and subsequent transfer of an oddity principle by children between 4 and 5 years of age were studied. The initial standard oddity problem was learned quickly by most of the children. A high level of performance was maintained on both transfer sets. The results were related to limitations placed on the oddity solutions learned by 4-year-olds by particular aspects of the original learning context.     

Mothers' subjective employment experiences and the behaviour of their nursery school children

Most research on the effects of maternal employment on children has followed the ‘maternal deprivation’ hypothesis, which focuses on differences in the behaviour of children of employed and non-employed mothers. Yet this framework may have impeded an examination of a more relevant question, namely the impact of mothers' employment-related experiences. Accordingly, this study assesses the influence of mothers' job satisfaction, job involvement and role conflict on the behaviour of their nursery school sons and daughters (n=46 and 45 respectively). The effects of maternal employment on their nursery school children were found to be mediated by (a) the nature and quality of the employment experience (i.e. positive or negative), (b) the type of child behaviour assessed, and (c) the sex of the child. Mothers' job satisfaction was positively associated with daughters' self-control and negatively with conduct problems; their role conflict was negatively related to sons' and daughters' self-control, and positively associated with sons' conduct problems and daughters' immaturity. These results support the hypothesis that the quality of the maternal employment experience influences nursery school children's behaviour.     

A daytime nap enhances visual working memory performance and alters event-related delay activity

Working memory (WM) is impaired following sleep loss and may be improved after a nap. The goal of the current study was to better understand sleep-related WM enhancement by: (1) employing a WM task that assesses the ability to hold and report visual representations as well as the fidelity of the reports on a fine scale, (2) investigating neurophysiological properties of sleep and WM capacity as potential predictors or moderators of sleep-related enhancement, and (3) exploring frontal and occipital event-related delay activity to index the neural processing of stimuli in WM. In a within-subjects design, 36 young adults (M_age = 20, 20 men, 16 women) completed a 300-trial, continuous-report task of visual WM following a 90-min nap opportunity and an equivalent period of wakefulness. Mixed-effect models were used to estimate the odds of successful WM reports and the fidelity of those reports. The odds of a successful report were approximately equal between nap and wake conditions for the start of the task, but by the end, the odds of success were 1.26 times greater in the nap condition. Successful WM reports were more accurate after a nap, independent of the time on task. Neither WM capacity nor any of the sleep variables measured were found to significantly moderate the nap effect on WM. Lastly, napping resulted in amplitude changes for frontal and occipital delay activity relative to the wake condition. The findings are discussed in relation to contemporary models of visual WM and the role of sleep in sustained attention.