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The present study examined the effects of lesions to the dorsal striatum (DS) in Sprague-Dawley rats, when tested on the acquisition and successive shifts in the position of a goal arm in an eight-arm radial maze. In the procedure we used, rats had to retrieve the location of one baited arm among the eight arms of the maze after it had just been presented as a sample during a forced trial. After attainment of a fixed learning criterion, rats were submitted to five successive shifts in the goal location. Results showed that DS rats were able to learn the position of the goal arm during the acquisition phase as efficiently as sham-operated rats. In contrast, when the position of the goal arm was shifted, although DS rats were able to learn its new position, they made significantly more errors and required more sessions to reach criterion than sham-operated rats. These results suggested that both groups did not solve the task using the same behavioral strategy. The analysis of responses made suggested that sham-operated rats solved the task using the pairing rule between the forced and the free run (matching-to-sample rule), while DS rats solved the task using only visuo-spatial processing. These data therefore suggest that the dorsal striatum plays an important role in rule-learning ability. 相似文献
53.
In the framework of the theory of social representations, the study set out to examine how Finnish parents and teachers have
received a major change in educational policy. Surveys on parents' and comprehensive school teachers' views of ongoing school
reforms indicated that current educational discourse is structured by two different representations — a “selective” one and
a “comprehensive” one-which contain two different notions of intelligence — “natural” and “sociorelativistic”. The subjects'
sociai position (socioeducational status and expertise) in the educational hierarchy tended to organize their representations.
The findings indicated that the different groups have different relationships to official educational policy and to the ethos
of educability embodied by the school.
University of Joensuu 相似文献
54.
Leila Beckwith Carol Rodning Deborah Norris Leslie Phillipsen Pegah Khandabi Judy Howard 《Infant mental health journal》1994,15(2):189-201
The aim of the study was to determine if spontaneous play was altered in 2-year-olds born to polysubstance-abusing mothers. The study is part of a longitudinal research project of chronic substance-abusing mothers and their children living in poverty in the inner city of Los Angeles, identified in the hospital at birth by positive urine-toxicology screens, and compared to non-substance-abusing mothers and their children living in the same geographic area, of similar ethnic group and socioeconomic and marital status. The behavior of the 31 target and 21 comparison children in the 16-minute procedure was measured by frequency counts of manipulative, functional, and symbolic acts as well as by ratings of the quality of play. The play of the prenatally drug-exposed children differed from the comparison group by demonstrating significantly more immature play strategies, less sustained attention, more deviant behaviors, and fewer positive social interactions with their caregivers. 相似文献
55.
Psychological Studies - Knowledge of child-rearing and child development is of the utmost importance to optimal parenting and child well-being. Most of what is known about parenting knowledge is... 相似文献
56.
Tzamalouka GS Parlalis SK Soultatou P Papadakaki M Chliaoutakis JE 《Aggressive behavior》2007,33(1):73-85
The current study investigated the role of lifestyle as a significant factor related to the aggression and violence between cohabitating partners. Based on previous research, lifestyle was defined as a special reflection of socialization into society and working life, where different lifestyles should also be able to produce different patterns of socialization into people's roles as partners. It was found that gender and years of cohabitating were significantly related to Emotional aggression and Sexual violence; lifestyle patterns were associated with specific forms of violence. More specifically, the lifestyles of Pleasure & Elegance and the one of Culture-Intellectualism were found to promote Emotional aggression. Also, the lifestyle of Yuppies/Workaholic and that of Physical activities stimulated the appearance of Sexual violence between partners. Moreover, individuals with Tradition-Religiousness lifestyle were more likely to show lower levels of Physical & Sexual violence while the adherents of the Substance abuse lifestyle pattern appeared to have an inclination towards Physical & Sexual Violence. Finally, the occurrence of one form of violent behaviour was likely to be related to the other forms of violent behaviour. 相似文献
57.
Armand Chatard Serge Guimond Leila Selimbegovic 《Journal of experimental social psychology》2007,43(6):1017-1024
Two studies examined the effect of gender stereotypes on students’ recollection of their school marks in stereotypically feminine (arts) and masculine (mathematics) domains. As predicted, the results of Study 1 indicated that the more students believed in gender stereotypes prior to recall, the more they biased their reported marks, compared to their actual marks, in a stereotype-consistent way (female students underestimated their marks in mathematics and male students underestimated their marks in arts). Study 2, in which the salience of gender stereotypes was manipulated prior to recall, yielded similar findings. The recall of school marks was more stereotype-consistent in a condition of high salience than in a condition of low salience of gender stereotypes. The theoretical implications of these results are discussed. 相似文献
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Anne Kjeldsen Harald Janson Mike Stoolmiller Leila Torgersen Kristin S. Mathiesen 《Journal of applied developmental psychology》2014
The overall aim of the current study was to identify typical trajectory classes of externalising behaviour, and to identify predictors present already in infancy that discriminate the trajectory classes. 921 children from a community sample were followed over 13 years from the age of 18 months. In a simultaneously estimated model, latent class analyses and multinomial logit regression analyses suggested a five-class solution for developmental patterns of externalising problem behaviours: High stable (18% of the children), High childhood limited (5%), Medium childhood limited (31%), Adolescent onset (30%), and Low stable (16%). Six risk factors measured at 18 months significantly discriminated among the classes. Family stress and maternal age discriminated the High stable class from all the other classes. The results suggest that focusing on enduring problems in the relationship with the partner and partners' health may be important in preventive and early intervention efforts. 相似文献
60.