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991.
992.
Z Shechtman 《International journal of group psychotherapy》1991,41(2):227-243
On the rationale that group psychotherapy focuses on interaction processes in close relationships, our study sought to investigate the hypothesis that small group therapy would be effective in enhancing intimate friendship in a dyadic relationship. The study group consisted of 102 elementary school students who had been referred for counseling help. Matched by age, sex, and similarity of problem, each pair of students was divided into an experimental group (N = 55) and a control group (N = 47). The experimental group contained eight small treatment groups and the control group contained seven matching small groups, leaving one special education group with no control. The results support our hypothesis that group psychotherapy positively affects intimate friendship of girls and boys. They further suggest the boys' need for such an experience, since without it they markedly deteriorate in intimate friendship. Implications for the group leader are derived from the correlations between gains in intimate friendship and group intimacy. 相似文献
993.
Two studies compared the attitudinal and behavioral effects of certain rewards and lotteries. In a laboratory experimental study, lotteries produced significantly more attitude change than cash payments. The greatest attitude change occurred among lottery winners. In a quasi-experimental field study, subjects rewarded with lottery tickets recycled glass and newspaper more frequently than subjects receiving other individual or group rewards. Attitude change was not affected by the type of reward Implications for the design of incentive programs to increase prosocial behavior are discussed 相似文献
994.
Control over response number by a targeted percentile schedule: reinforcement loss and the acute effects of d-amphetamine.
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G Galbicka K P Fowler Z J Ritch 《Journal of the experimental analysis of behavior》1991,56(2):205-215
Two fixed-consecutive-number-like procedures were used to examine effects of acute d-amphetamine administration on control over response number. In both procedures, rats were required to press the left lever at least once and then press the right lever to complete a trial. The consecutive left-lever presses on each trial comprised a "run." Under the targeted percentile schedule, reinforcement was provided if the current run length was closer to the target length (16) than half of the most recent 24 runs. This differentially reinforced run length while holding reinforcement probability constant at .5. A second group acquired the differentiation under the targeted percentile schedule, but were then shifted to a procedure that yoked reinforcement probability by subject and run length to that obtained under the targeted percentile schedule. The two procedures generated practically identical control run lengths, response rates, reinforcement probabilities, and reinforcement rates. Administration of d-amphetamine disrupted percentile responding to a greater degree than yoked control responding. This disruption decreased reinforcement frequency less in the former than the latter procedure. The similar baseline responding under these two procedures suggests that this difference in sensitivity was due to behavioral adjustments to drug prompted by reduction of reinforcement density in the yoked control but not the percentile schedule. These adjustments attenuate the drug's effects under the former, but not the latter, procedure. 相似文献
995.
The role of instructions in the transfer of ordinal functions through equivalence classes 总被引:3,自引:3,他引:0
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G Green Z G Sigurdardottir R R Saunders 《Journal of the experimental analysis of behavior》1991,55(3):287-304
In two experiments, adult subjects completed match-to-sample training and testing to establish four equivalence classes of four figures each. Then the subjects were taught one three-position sequence consisting of one stimulus from Class 1, one from Class 2, and one from Class 3. Inclusion of Class 4 stimuli in sequences was never reinforced, but two different stimuli from Class 4 appeared as distractors on each sequence trial. Tests assessed whether subjects would produce novel three-position sequences composed of members of Classes 1 through 3 that had not been used in sequence training. Three subjects in Experiment 1 received instructions about the match-to-sample and sequencing tasks, in addition to training contingencies. All 3 demonstrated equivalence class formation after match-to-sample training. After they were taught one sequence with one member of Classes 1 through 3, none of these subjects produced untrained sequences with other equivalence class members reliably. One additional sequence was trained directly; thereafter 1 subject showed some evidence of transfer of the trained ordinal functions across the remaining members of the equivalence classes, but the other 2 did not. Following a review of equivalence class training and testing and a review of the original sequence training, all 3 subjects produced most of the predicted, untrained sequences on tests. Experiment 2 replicated Experiment 1 with 2 adults but omitted all instructions except the minimal ones necessary to initiate responding. Unlike the subjects in Experiment 1, both of these subjects demonstrated virtually complete transfer of ordinal functions through the equivalence classes after direct training on just one sequence composed of one member of Classes 1 through 3. 相似文献
996.
We studied writing abilities in a strongly right-handed man following a massive stroke that resulted in virtually complete destruction of the language-dominant left hemisphere. Writing was characterized by sensitivity to lexical-semantic variables (i.e., word frequency, imageability, and part of speech), semantic errors in writing to dictation and written naming, total inability to use the nonlexical phonological spelling route, and agrammatism in spontaneous writing. The reliance on a lexical-semantic strategy in spelling, semantic errors, and impaired phonology and syntax were all highly consistent with the general characteristics of right hemisphere language, as revealed by studies of split-brain patients and adults with dominant hemispherectomy. In addition, this pattern of writing closely resembled the syndrome of deep agraphia. These observations provide strong support for the hypothesis that deep agraphia reflects right hemisphere writing. 相似文献
997.
Filtering by movement in visual search. 总被引:2,自引:0,他引:2
P McLeod J Driver Z Dienes J Crisp 《Journal of experimental psychology. Human perception and performance》1991,17(1):55-64
Search for a target defined by a conjunction of movement and form (e.g., an X moving up in a display of intermingled Os moving up and stationary Xs) is parallel. This result is also found if (a) the moving Os and target X move in unpredictable directions so that the moving stimuli do not form a clear perceptual group or (b) the nontarget Xs also move but in a known, different direction from the Os and target X. In contrast, search is slow and serial if the target may be unpredictably among either moving or stationary stimuli. These results suggest that a component of the visual system operates as a movement filter that can direct attention to stimuli with a common movement characteristic. The filtering cue can be moving (vs. stationary), or movement in 1 particular direction. The results do not support the view that attention can only be directed to groups defined by common fate. 相似文献
998.
Catherine Z. Elgin 《Synthese》1993,95(1):13-28
The arts and the sciences perform many of the same cognitive functions, both serving to advance understanding. This paper explores some of the ways exemplification operates in the two fields. Both scientific experiments and works of art highlight, underscore, display, or convey some of their own features. They thereby focus attention on them, and make them available for examination and projection. Thus, the Michelson-Morley experiment exemplifies the constancy of the speed of light. Jackson Pollock'sNumber One exemplifies the viscosity of paint. Despite their similarities, science and art might seem to differ in their attitude toward facts. Science is said to adhere to facts; art, to be indifferent to them. Such, I urge, is not the case. Science, like art, often scorns fact to advance understanding through fiction. Thought experiments, I contend, are scientific fictions; literary and pictorial fictions, aesthetic thought experiments.This paper was first published in 1991, in Peter A. French, Theodore Uehling Jr., and Howard Wettstein (eds.),Philosophy and the Arts, Midwest Studies in Philosophy, Vol. XVI, University of Notre Dame, Notre Dame, pp. 196–208. 相似文献
999.
We investigated differences in self-concept between 360 only children and 555 sibling children in the sixth grade of three urban schools and three rural schools in the People's Republic of China. Peer perceptions and teacher perceptions were also collected using sociometric measures. Self-concept was determined by the Self-Perception Profile for Children (Harter, 1985). Comparisons of sibling children and only children showed no differences on self-concept; however, urban residents had higher self-concept scores than children from rural areas, and boys scored higher than girls. No significant interaction effects between sibling status, gender, and residence were found. 相似文献
1000.
Increasing the salience of one's best selves can undermine inspiration by outstanding role models 总被引:2,自引:0,他引:2
The accessibility of people's highest hopes and achievements can affect their reactions to upward comparisons. Three studies showed that, under normal circumstances, individuals were inspired by an outstanding role model; their motivation and self-evaluations were enhanced. However, when their most positive self-views were temporarily or chronically activated, inspiration was undermined, and individuals' motivation and self-evaluations tended to decrease. Another study found that role models inspired participants to generate more spectacular hopes and achievements than they would have generated otherwise. It appears that increasing the accessibility of one's best selves undercuts inspiration because it constrains the positivity of the future selves one may imagine and prevents one from generating the more spectacular future selves that the role model normally inspires. 相似文献