Children's ability to discriminate reflections and rotations of visual stimuli was examined within the confines of a mental rotation task. It was hypothesized that success would be affected by both characteristics of the stimulus and by the subtlety of the discrimination required. Forty 3- to 4-year-old children were directed to mentally rotate a stimulus a given number of degrees and to discriminate the appearance of the rotated stimulus from among a set of alternatives. Four stimuli differing in the number of visual orientation cues were utilized across 24 trials. A significant effect was found for number of orientation cues, and data indicated the difficulty children experienced detecting reflections, a task which bears close resemblance to the yes/no option in prototypic rotation studies. Children were only successful with a limited range of stimuli when discrimination of a reflected foil was not required. Results are discussed in light of discrepant findings about children's kinetic imagery ability and the advisability of using this particular paradigm with young Children. 相似文献
攻击行为是以伤害或损害另一生物体为目的,且该生物体想要避开的任何形式(身体、心理、言语)的行为。根据自2000年以来,国内外学者对体育运动的攻击行为( Aggression in sports)的研究,从运动员攻击行为的定义、测量方法以及影响因素入手,以展示运动攻击领域的最新研究成果,并对该领域未来的研究提出了自己的想法。 相似文献
Purpose: This paper reflects upon the practice of Argentine rural extensionists working in the extension public system through the process of identifying different rural extensionists' types of mindsets and comparing them with transfer of technology extension approach, dialogical processes of horizontal knowledge exchange, participatory perspectives and innovation system approach.
Design/Methodology/approach: A quali-quantitative investigation was conducted. Surveys containing closed and open questions were sent via email to rural extensionists. This allowed the researcher to identify their beliefs about different issues connected to extension practice. The sample was incidental (n = 219; 143 men, 76 women). Qualitative data was categorized and quantified. Finally, a two-steps cluster analysis was implemented.
Findings: Two types of rural extensionists' mindsets were identified, one of which relates to the transfer of technology approach and other to the dialogical/horizontal model, yet neither of them fitting the ideal of the most important extension institution of the country, which supports an innovation system approach.
Practical implications: Extensionists' practices and institutional ideals do not coincide. Reflexive training processes are required to make beliefs about rural extension explicit in order to build a contextually suitable extension proposal. Originality/Value: Through a quali-quantitative approach to the issue of rural extensionists' mindsets, this paper contributes to a better understanding of Argentine rural extensionists' practices. 相似文献
The purpose of this research was to develop and test a model of cross-cultural adaptation which proposes that adaptation to movement across cultures involves three processes: learning new social norms, matching behavior to these norms, and matching one's self-concept to the newly acquired behaviors and social norms. According to this model, adaptation problems arise when the foreigner fails in one or more of these processes so as to create various types of mismatches between the components of norms, behavior, and self-concept. Each type of mismatch was hypothesized to lead to a particular affective response and to be most effectively resolved by unique coping strategies which would restore balance among these three components. Successful adaptation, then, occurs when the foreigner uses the coping strategy which is appropriate to the type of mismatch problem encountered in the acculturation situation.This study tested the hypothesized relationship between mismatch problem, affective response, and coping strategy. Subjects were 40 foreign and 40 Canadian students at a Canadian university. They were presented with scenarios depicting five types of mismatches in hypothetical acculturation situations. Results showed that subjects' interpretations of these agreed with the mismatches proposed by the model. Moreover, their reported affective and coping responses confirmed the majority of the hypothesized relationships. These findings suggest the mismatch model may serve as a good framework for classifying diverse adaptation problems and for predicting the coping strategies which would effectively resolve these. 相似文献
An experiment was conducted to evaluate constructive memory in fourth-grade low-SES black and middle-SES white children. The children were read nine short passages; each passage was composed of two premise statements and a filler sentence. The children were tested by a recognition procedure. Thirty-six test sentences were presented randomly. Four sentences were associated with each passage (true premise, false premise, true inference, and false inference). Subjects were asked to make yes/no recognition decisions based on whether the test sentence was identical to a sentence presented at study. Middle-SES white children made few errors, except to true inference test sentences. This pattern of performance is consistent with the constructive view of memory. Low-SES black children also had a high error rate to true inference items. However, this outcome may not reflect constructive memory because they also had a high error rate to some of the other types of test sentences. 相似文献