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111.
Smith JD Crossley MJ Boomer J Church BA Beran MJ Ashby FG 《Journal of comparative psychology (Washington, D.C. : 1983)》2012,126(3):294-304
Current theories of human categorization differentiate an explicit, rule-based system of category learning from an implicit system that slowly associates regions of perceptual space with response outputs. The researchers extended this theoretical differentiation to the category learning of New World primates. Four capuchins (Cebus apella) learned categories of circular sine-wave gratings that varied in bar spatial frequency and orientation. The rule-based and information-integration tasks, respectively, had one-dimensional and two-dimensional solutions. Capuchins, like humans, strongly dimensionalized the stimuli and learned the rule-based task more easily. The results strengthen the suggestion that nonhuman primates have some structural components of humans' capacity for explicit categorization, which in humans is linked to declarative cognition and consciousness. The results also strengthen the primate contrast to other vertebrate species that may lack the explicit system. Therefore, the results raise important questions about the origins of the explicit categorization system during cognitive evolution and about its overall phylogenetic distribution. 相似文献
112.
Analogical transfer is the ability to transfer knowledge despite significant changes in the surface features of a problem.
In categorization, analogical transfer occurs if a classification strategy learned with one set of stimuli can be transferred
to a set of novel, perceptually distinct stimuli. Three experiments investigated analogical transfer in rule-based and information-integration
categorization tasks. In rule-based tasks, the optimal strategy is easy to describe verbally, whereas in information-integration
tasks, accuracy is maximized only if information from two or more stimulus dimensions is integrated in a way that is difficult
or impossible to describe verbally. In all three experiments, analogical transfer was nearly perfect in the rule-based conditions,
but no evidence for analogical transfer was found in the information-integration conditions. These results were predicted
a priori by the COVIS theory of categorization. 相似文献
113.
White police officers and undergraduate students mistakenly shoot unarmed Black suspects more than White suspects on computerized shoot/don't shoot tasks. This bias is typically attributed to cultural stereotypes of Black men. Yet, previous research has not examined whether such biases emerge even in the absence of cultural stereotypes. The current research investigates whether individual differences in chronic beliefs about interpersonal threat interact with target group membership to elicit shooter biases, even when group membership is unrelated to race or cultural stereotypes about danger. Across two studies, participants with strong beliefs about interpersonal threats were more likely to mistakenly shoot outgroup members than ingroup members; this was observed for unfamiliar, arbitrarily formed groups using a minimal group paradigm (Study 1) and racial groups not culturally stereotyped as dangerous (Asians; Study 2). Implications for the roles of both group membership and cultural stereotypes in shaping decisions to shoot are discussed. 相似文献
114.
Knowledge representations acquired during category learning experiments are ‘tuned’ to the task goal. A useful paradigm to
study category representations is indirect category learning. In the present article, we propose a new indirect categorization
task called the “same”–“different” categorization task. The same–different categorization task is a regular same–different
task, but the question asked to the participants is about the stimulus category membership instead of stimulus identity. Experiment
1 explores the possibility of indirectly learning rule-based and information-integration category structures using the new
paradigm. The results suggest that there is little learning about the category structures resulting from an indirect categorization
task unless the categories can be separated by a one-dimensional rule. Experiment 2 explores whether a category representation
learned indirectly can be used in a direct classification task (and vice versa). The results suggest that previous categorical
knowledge acquired during a direct classification task can be expressed in the same–different categorization task only when
the categories can be separated by a rule that is easily verbalized. Implications of these results for categorization research
are discussed. 相似文献
115.
116.
John B. Jemmott Karen L. Ashby Kathryn Lindenfeld 《Journal of applied social psychology》1989,19(14):1198-1211
This article reports a study that examined whether perceptions of the availability of members of the opposite sex are related to commitment to romantic relationships among students at two colleges. Analyses of students' anonymous questionnaire responses reveal that students who perceived that there were relatively few members of the opposite sex on their college's campus were more committed to their romantic relationship, considered their relationship to be more attractive, and invested more in it compared with other students. These relations involving the perceived opposite-sex ratio did not vary as a function of the length of the romantic involvement or the students' gender, race, or college. The perceived opposite-sex ratio was significantly related to the actual opposite-sex ratio, but the latter was not significantly related to commitment, investments, or perceived attractiveness of the relationship. Considering the sample as a whole, the students overestimated the availability of opposite-sex persons. It is concluded that perceptions of the availability of persons of the opposite sex may affect the dynamics of relationships between men and women. Implications of the findings for social exchange theories are discussed. 相似文献
117.
Following 8 weekly sessions of group behavioral self-control treatment, 75 obese women were assigned to one of five different maintenance conditions: (a) structured behavioral booster sessions held every two weeks; (b) structured behavioral booster sessions held every month; (c) unstructured nonspecific booster sessions held every two weeks; (d) unstructured nonspecific booster sessions held every month; and (e) a control group that received no booster sessions. Follow-ups were conducted at 3, 6, 9 and 12 month intervals. The study was completed in two replications. Results failed to show a significant effect of either booster session content or frequency. All groups continued to lose weight during the first three months of follow-up. Thereafter subjects in Replication 1 showed significant increases in weight over the next 9 months, whereas subjects in Replication 2 maintained their treatment-produced weight loss. The data do not support the view that booster sessions facilitate maintenance. 相似文献
118.
Jefferson D. Ashby Harvey W. Wall Samuel H. Osipow 《Journal of counseling and development : JCD》1966,44(10):1037-1041
Three groups of entering college freshmen, possessing varying degrees of identification of educational-vocational goals, were compared on a variety of personality, achievement, aptitude, school, and family factors. The major differences indicated that the most undecided group was more dependent than the other two groups, but equal to the most decided group in academic achievement, while a middle, or tentatively decided group, was not as successful academically as the most and least decided groups. These findings suggest that educational-vocational indecision has at least two dimensions. A need for different counseling approaches in dealing with uncertain students depending upon the antecedents of their uncertainty is likely. 相似文献
119.
The Rev. Homer U. Ashby Jr. Ph.D. 《Journal of religion and health》1981,20(3):176-185
This paper reviews the ways in which psychology has influenced the pastoral counseling movement, focuses, upon how the role and function of the pastoral counselor have lost their unique identity, and offers the construct of a moral context as a means for rediscovering, identifying, reviving, and strengthening the pastoral counselor's professional and spiritual selfimage.This paper was presented at the annual meeting of the American Psychological Association in Montreal, Canada, 1980. The author acknowledges, with appreciation, the contribution of Ariel Sylverin in the development of this article. 相似文献
120.
The literature on perfectionism was reviewed and was found to be primarily based on a biased sample of perfectionists in treatment and a negative perception of perfectionism related to common definitions. This negative set also influenced the empirical attempts to measure the construct. Based on these conclusions, the present study was designed to examine perfectionism by locating and interviewing a sample of participants who either considered themselves to be perfectionists or were considered to be perfectionists by others who knew them well. Results are presented and discussed along with suggestions for further research and the implications for counseling. 相似文献