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641.
John C. Birkimer Anita P. Barbee Mary Lou Francis Melissa M. Berry Pamela S. Deuser Jacqueline R. Pope 《Journal of applied social psychology》1994,24(19):1735-1761
Across three experiments college students were given refutational messages or other treatments encouraging signing drivers' licenses to donate bodily organs in case of accidental death. An attitudinal measure (willingness to sign) predicted observed signing behavior, but relatively weakly. A measure of behavioral expectation to sign or not to sign predicted more strongly. A discussion with family was encouraged, the impact of that discussion also predicted signing but less strongly so. In Study 1 groups given a refutational message signed at no greater rates than a group given a control message. In Study 2 a refutational message group and a group asked to think about donating for 2 min signed at higher rates than a true control group. In Study 3 groups asked to decide whether or not to sign by a certain date and time signed at a higher rate than a refutational message group as in earlier studies. These procedures are recommended for organ donation signing campaigns. 相似文献
642.
Pamela Case Betty Tuller Mingzhou Ding J. A. Scott Kelso 《Attention, perception & psychophysics》1995,57(7):977-988
Previous work (Tuller, Case, Ding, & Kelso, 1994) has revealed signature properties of nonlinear dynamical systems in how people categorize speech sounds. The data were modeled by using a twowell potential function that deformed with stimulus properties and was sensitive to context. Here we evaluate one prediction of the model—namely, that the rate of change of the potential’s slope should increase when the category is repeatedly perceived. Judged goodness of category membership was used as an index of the slope of the potential. Stimuli from a “say”-“stay” continuum were presented with gap duration changing sequentially throughout the range from 0 to 76 to 0 msec, or from 76 to 0 to 76 msec. Subjects identified each token as either “say” or “stay” and rated how good an exemplar it was of the identified category. As predicted, the same physical stimulus presented at the end of a sequence was judged a better exemplar of the category than was the identical stimulus presented at the beginning of the sequence. In contrast, stimuli presented twice near the middle of a sequence with few (or no) stimuli between them, as well as stimuli presented with an intervening random set, showed no such differences. These results confirm the hypothesis of a context-sensitive dynamical representation underlying speech. 相似文献
643.
644.
Pamela A. Jackson Raymond P. Kesner Kelly Amann 《Neurobiology of learning and memory》1998,70(3):328-348
In this task rats had to learn that a three-dimensional object stimulus (a rectangle) that was visible for 2 s would result in a positive (go) reinforcement for one object (a ball) and no reinforcement (no go) for a different object (a bottle). However, if the rectangle stimulus was visible for 8 s then there would be no reinforcement for the ball (no go), but a reinforcement for the bottle (go). After rats learned this conditional discrimination by responding differentially in terms of latency to approach the object, they received large (dorsal and ventral) lesions of the hippocampus, lesions of the medial prefrontal cortex (anterior cingulate and precentral cortex), lesions of the cortex dorsal to the dorsal hippocampus, or served as sham-operated controls. Following recovery from surgery they were retested. The results indicate that there were major impairments following hippocampal lesions, in contrast to cortical control and medial prefrontal cortex lesions, as indicated by smaller latency differences between positive and negative trials on postsurgery tests. In order to ensure that the deficits observed with hippocampal lesions were not due to a discrimination problem, new rats were trained in an object (gray cylinder) duration discrimination task. In this go/no go procedure, the rats were reinforced for a 2-s exposure (duration) of the gray cylinder, but not a 10-s duration, or vice versa. The results indicate that after hippocampal lesions, there was an initial deficit followed by complete recovery. There were no significant changes for the medial prefrontal, cortical control, or sham-operated animals. It appears that the hippocampus, but not the medial prefrontal cortex, is actively involved in representing in short-term memory temporal attribute information based on the use of markers for the beginning and end of the presence (duration) of a stimulus (object). 相似文献
645.
A person perception experiment was conducted toexamine people's beliefs about the outcome of anextramarital sexual relationship involving ahypothetical single friend and a married person. Twohundred and eleven undergraduate students (80 males and129 females; most of whom were Caucasian) were theparticipants in the experiment. The married person inthe vignette was presented as either a man or a woman (and always the opposite gender of the singlefriend) and as having low or high investments in themarriage (as indicated by number of children and yearsmarried). Results indicated that the participants' perceptions of the outcome of this type ofextramarital relationship depended on the gender of themarried person/single friend. Participants were morelikely to believe that the married person loved the extramarital partner, was committed to theextramarital relationship, and would marry theextramarital partner, if the married person was a womanrather than a man. The investment manipulations had noeffect on participants' perceptions of therelationship. The results were discussed as they relateto other beliefs about male vs. femalesexuality. 相似文献
646.
The importance of the individual in the ‘causal’ relationship between attractiveness and self-esteem
Pamela Kenealy Kate Gleeson Neil Frude William Shaw 《Journal of community & applied social psychology》1991,1(1):45-56
This paper argues that many psychological explanations underlying health and social behaviour stress the importance of the relationship between attractiveness and self-esteem. The nature of this relationship is not well understood, yet can have important implications for the individual in areas of medical intervention which involve treatment on aesthetic grounds. A survey of psychosocial factors among 1018 children aged 11-12 years is reported. The study examined the association between perception of physical attractiveness and self-esteem in order to clarify the relationship between self-esteem and self versus others' perception of attractiveness. Self-ratings of attractiveness were linked to judges' ratings to determine whether subjects underrated, over-rated, or accurately perceived their own physical attractiveness. The results showed that although ratings of general facial attractiveness by others were associated with self-perceived attractiveness, in the specific area of dental health, attractiveness (as judged by others) was not. There were no significant relationships between ratings of attractiveness by others and self-esteem. Self-perception of attractiveness, however, was significantly associated with self-esteem. Further analyses showed that children who under-rated their own facial attractiveness had a lower mean score for self-esteem than over-raters or accurate perceivers (who did not differ significantly). In contrast, under-raters of dental attractiveness had a lower mean score for self-esteem than over-raters, but did not differ significantly from accurate perceivers. Over-raters of dental attractiveness had a higher mean score for self-esteem than accurate perceivers. These finding suggest that if an over-rater were to receive treatment on aesthetic grounds it is unlikely, given that they have high self-esteem already, that such intervention will have a profound psychological impact. These data indicate the importance of determining the way in which individuals evaluate their appearance compared to others, and may help to clarify previously equivocal findings concerning the relationship between self-esteem and attractiveness. 相似文献
647.
Pamela C. Fischer Randy J. Smith Elizabeth Leonard Dale R. Fuqua James L. Campbell Mark A. Masters 《Journal of counseling and development : JCD》1993,71(4):440-443
This study was designed to explore sex differences along several affective dimensions. A sample of 455 undergraduate students was administered several affective scales. A discriminant analysis was performed using the affective scales as discriminating variables and sex as the group variable. Significant sex differences were found on only two of nine affective scales, and the substantive significance of these differences seems to he minimal. The authors concluded that the promotion of faulty stereotypical beliefs should be abandoned in favor of increasingly complex inquiry in this area. 相似文献
648.
Memory & Cognition - Investigations of context-dependent recognition, a phenomenon in which recognition is better for items studied and tested with the same rather than different context, have... 相似文献
649.
Two experiments were conducted with pigeons to determine whether internal representations of food and no-food events can act as mediators in the formation of new associations. Specifically we asked if the representation of an anticipated event can replace the event itself in an established conditional discrimination. In Phase 1 of both experiments pigeons were differentially autoshaped to peck hue stimuli, only one of which was followed by access to food. In Phase 2 they were trained on a symbolic 0-delay matching-to-sample (DMTS) task with food and no-food samples and line-orientation comparisons. In Phase 3 the birds were tested on a symbolic DMTS task in which the hue stimuli from Phase 1 were substituted for the Phase 2 food-event samples. For the Pos group, the hue followed by food in Phase 1 was substituted for the food sample and the hue associated with no-food was substituted for the no-food sample so that the resulting sample/comparison pairings were consistent with the food-event mediator. For the Neg group the pairings were reversed so that the sample/comparison pairings were inconsistent with the food-event mediators. In Experiment 1, when the no-food event was the absence of an event, acquisition of the transfer task was significantly more rapid in the Pos than in the Neg condition. In Experiment 2, when the no-food event was the presentation of an empty food hopper, the Pos group transferred at a significantly higher level than the Neg group. The two experiments provide evidence that in pigeons, representations involving event anticipations can be substituted for, and are thus similar to, the events themselves. 相似文献
650.
Continuity in Emotion Knowledge from Preschool to Middle-Childhood and Relation to Emotion Socialization 总被引:1,自引:0,他引:1
This longitudinal study examined the preschool correlates of middle school children's knowledge of emotional display rules. Participants included 50 children (29 girls) who were seen at preschoolage and again 4 years later. A total of 91% of the children were Caucasian, 4.5% were Mexican American, and 4.5% were Asian American. During the preschool period, measures included children's knowledge of facial expressions, knowledge of emotion-eliciting situations, and emotional role-taking ability. In addition, the rate at which their mothers explained the causes of emotions was assessed. Four years later, the children's knowledge of emotional display rules was assessed. The display rule measures included expression regulation knowledge (i.e., whether the children altered the facial expression relative to the internal feeling without providing a motive), self-protective display rules, and prosocial display rules. Results revealed that preschoolers' situation knowledge was a negative predictor of expression regulation knowledge and that emotional role-taking was inversely related to knowledge of self-protective display rules. The results also demonstrated that the rate at which mothers' explained emotions to their children as preschoolers was positively associated with expression regulation knowledge and knowledge of prosocial display rules. 相似文献