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1.
Five-, 7-, and 9-year-old children were trained and tested in a bimanual coordination task that required them to rotate two cranks (either at the same or at different velocities) using mirror (inwards or outwards) or parallel movements (clockwise or counterclockwise). The task consisted of tracing two lines of different slants, by turning the two cranks either at the same velocity (to draw the 45 degrees slanted line) or at different velocities (to draw the 22 degrees line). The same-velocity condition resulted in significantly better performance than the different-velocities condition with the age x angle interaction: the performance in the different-velocities condition improved considerably at 9 years of age. Mirror movement induced faster and more accurate performance relative to parallel movements in the same-velocity condition but not in the different-velocities condition. This difference was much greater in 5- and 7-year-olds than in 9-year-olds. The results are interpreted as reflecting a decreasing influence of motor constraints on bimanual coordination.  相似文献   

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This study examined the effect of the positive/negative quality of a gender-role stereotype on the age at which very young children are willing to associate the behavior with a member of a particular sex. The results indicate that, in comparison to 5- and 6-year olds, 4-year-old children are reluctant (1) to associate positive gender-role stereotypes with opposite-sex figures as well as (2) to accept negative stereotypes as characteristic of their own sex. In addition, a majority of the children in the sample associated with their own sex the gender-role stereotypes that are highly valued in the preschool and the school environment.  相似文献   

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Abstract

The disinhibition hypothesis advanced by Hasher and Zacks (1988) predicts a faulty inhibitory mechanism resulting in “increased breadth of activation of nongoal path ideas” with aging (p. 213, Fig. 1). to assess this prediction, we tested young and older adults with a modified Stroop paradigm in which the semantic relationship between the words and ink colors was varied. Items were presented in five conditions: Stroop words (BLUE), related color words (NAVY), related words (SKY), neutral words (REFER), and asterisks (???). We found an age difference in interference for the Stroop words only; that is, when the response set was the same as the stimulus set, older adults' color-naming performance was jeopardized. In contrast, young and older adults did not differ in proportional slowing when related colors, related words, neutral words, or asterisks were presented. the findings are discussed in terms of three explanations: (a) a developmental dissociation between response suppression and semantic suppression; (b) weaker semantic activation; and (c) the effect of paradigm differences.  相似文献   

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Latencies (RT) and eye movement measures were used to examine the effects of age and contrast on the distractor-ratio effect (DRE) in visual search. Younger and older adults performed a contrast x orientation conjunction search task where the ratios of white to black distractors and luminance contrast levels were varied. The distractor-ratio manipulation had similar effects for older and younger adults on both RT and the number of fixations required to find the target. Both measures were largely independent of distractor ratio on target-present trials, while both RTs and the fixation number increased with the number of items sharing the target's contrast polarity on target-absent trials. A more detailed analysis of eye movements suggested that younger adults were a bit more adept at attending to the smaller set of distractors, which presumably facilitated both overt and covert search. Generalized slowing can account for the age differences in RT, but the fixation number data speak to another mechanism, perhaps increased cautiousness on the part of the elderly when signal strength is low.  相似文献   

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A test of nonverbal decoding skill (the PONS test) was administered to 632 subjects of eight different age levels, ranging from third graders to adults (Ages 8–33 years). Females were more accurate than males, older subjects were more accurate than younger ones, and all samples tended to decode more successfully when more information was available. Three different analyses showed that the increase in accuracy with increasing amounts of information was more pronounced for the older than for the younger groups. This differential effectiveness in the utilization of available information was discussed in terms of processing capacity, effort, and strategies for sampling a diversity of cues.  相似文献   

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For two semantic knowledge domains, general and computer-related, feeling-of-knowing (FOK) and confidence level (CL) ratings and their relative accuracy were assessed in young, middle-aged, and older adults, after test difficulty was equated across age groups. Global memory self-efficacy beliefs were also assessed for each domain. As expected, greater age was associated with poorer memory self-efficacy beliefs only in the computer domain. The oldest two groups were found to be more underconfident than young adults when rating their FOK but not their CL, for computer items but not for general items. Statistical control of age differences in memory self-efficacy beliefs in the relevant domain greatly reduced this age effect on computer-related FOK ratings. This finding suggests that absolute FOK judgments are more closely related to memory self-efficacy beliefs than are CL judgments. Gamma correlations between judgments and recognition performance revealed that all age groups were equally accurate in FOK and in CL judgments, in both domains.  相似文献   

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A sentence-priming technique was used to examine whether older women (N = 39) share a more positive view of aging than younger women (N = 35). Situationally specified statements about older and younger persons were presented, followed either by a semantically related word, an unrelated word of the same valence, or a nonword. The accessibility of target words was measured by reaction times in a lexical decision task. Whereas a semantic priming effect for negatively connoted materials emerged for both groups, a priming effect for positively connoted materials was found for older women only. Furthermore, an affective priming effect was found for the older group, i.e., older women tended to respond relatively faster (slower) to semantically unrelated positive (negative) words following a sentence about an older person. The results are discussed within a coping-theoretical framework.  相似文献   

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This paper analyzes one dimension of the frequently alleged contradiction between treating medicine as a business and as a profession, namely the incompatibility between viewing the physician patient relationship in economic and moral terms. The paper explores the utilitarian foundations of economics and the deontological foundations of professional medical ethics as one source for the business/medicine conflict that influences beliefs about the proper understanding of the therapeutic relationship. It, then, focuses on the contrast and distinction between medicine as business and profession by critically analyzing the classic economic view of the moral status of medicine articulated by Kenneth Arrow. The paper concludes with a discussion of some advantages associated with regarding medicine as a business.  相似文献   

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Recent research suggests that social perceivers’ dispositional inferences are influenced by information about the ways others’ behavior varies stably across situations. We extend this research to stereotypes. Specifically, we examined peoples’ preconceptions about the situation–behavior profiles that social groups are likely to display, as well as the implications of such preconceptions for behavioral judgments. Focusing on gender stereotypes, in Study 1 we found that perceivers’ expectations about men’s and women’s assertiveness are qualified by situational information. Study 2 revealed that perceivers’ beliefs about the mentalistic attributes (e.g., goals, beliefs, motivations) that characterize men and women mediated the relationship between target gender and perceivers’ expectations about situation–behavior patterns. Study 3 explored how such contextualized stereotypes affect on-line judgments of targets’ behavior, showing that perceivers judge a given behavior’s assertiveness based not only on target gender but also on situation type.  相似文献   

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Previous studies have examined the independent roles of positive age stereotypes (PAS) and negative age stereotypes (NAS) in successful aging. This study aimed to examine the joint effect of PAS and NAS on the well-being of Chinese older adults, and to further examine whether this effect was moderated by flexible goal adjustment (FGA). Using a cross-sectional design, 279 Chinese older adults (age range 60?97 years) completed measures related to age stereotypes, FGA, and well-being. The results showed that PAS interacted with NAS to predict well-being. In addition, the joint effect of PAS and NAS was moderated by FGA. Specially, for older adults with low FGA, NAS weakened the positive association between PAS and well-being; whereas, for older adults with high FGA, NAS could not influence the association between PAS and well-being. Tailored interventions to modify aging perceptions and to enhance coping flexibility competence might be helpful for promoting the well-being of older adults.  相似文献   

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We investigated the connection between moral exclusion of outgroups and on the one hand, right-wing authoritarianism (RWA), and social dominance orientation (SDO) on the other. We assumed that both RWA and SDO would increase the tendency to place other groups out of the scope of justice. However, we also tested whether negative stereotypes about an outgroup’s threatening and norm-violating misbehavior would serve as a justification for moral exclusion. These assumptions were tested in connection with Roma, Jewish, and Muslim people as target groups in the Hungarian context (= 441). In line with our hypotheses, we found that both RWA and SDO had an indirect effect on moral exclusion mediated by negative stereotypes about the particular target group. Our findings suggested that negative stereotypes were more important legitimizing factors for RWA than for SDO. Our results highlight the benefits of interpreting the process of moral exclusion as an outcome of motivated social cognition.  相似文献   

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The objective list account of wellbeing is usually taken to say that the same set of goods is relevant to wellbeing for any person, regardless of age. Coupled with reasonable assumptions about how goods are distributed over the lifespan, that leads to a picture of wellbeing as higher in midlife and lower in childhood and old age. I argue that a stage-relativized objective list theory is more plausible, after exploring several ways to understand the concept of a life stage. On the stage-relativized view, lists of goods that define wellbeing vary in the sense that there are shifting thresholds and subcategories relevant to different stages of life, but also because there are goods that count at one stage and count less or not at all at others. After exploring the list of goods for old age, I argue that the old age form of wellbeing can be welcomed even if the goods it offers are not superior to midlife goods.  相似文献   

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