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The question addressed by the present experiment is whether the ability to distinguish between veridical and imaginal memory representations changes with age. Second-grade, fourth-grade, and sixth grade children (8, 10, and 12 years old) and college students were shown pictures of familiar objects. Each picture was presented one, two, or three times and, interspersed with these presentations, subjects were asked to imagine each picture zero, one, or three times. Subsequently they were asked to judge the presentation frequency of each picture. For all groups, imagining the pictures resulted in inflated estimates of event frequency. However, contrary to the idea that children have a particularly difficult time discriminating externally generated from internally generated memories, one analysis indicated adults were actually somewhat more affected than children by the imagination trials.  相似文献   

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The possibility that regularly broadcast entertainment television programs can facilitate prosocial behavior in children was investigated. Thirty first-grade children, 15 boys and 15 girls, were individually exposed to one of three half-hour television programs: a program from the Lassie series which included a dramatic example of a boy helping a dog, a program from the Lassie series devoid of such an example, or a program from the family situation comedy series, the Brady Bunch. The effects of the programming were assessed by presenting each child with a situation that required him to choose between continuing to play a game for self-gain and helping puppies in distress. Children exposed to the Lassie program with the helping scene helped for significantly more time than those exposed to either of the other programs.  相似文献   

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Relationships between verbalized knowledge (metamemory), strategy use, and performance were examined in a memory task for visually presented episodes. Kindergarten, second-grade, and fifth-grade students were asked to reconstruct a sequence of pictures forming an episode from an array of original pictures and foils. The episodes varied on two dimensions; materials type and the logic of the sequence. Materials were either typical (familiar animal characters and scenes) or atypical (geometric figures) story materials. Sequences either readily conveyed a story (logical) or were rearranged to present a random ordering of pictures (illogical). Children were questioned about their use of a story line to help remember the picture sequences (general questioning) and were asked more specific questions concerning the reasons for their picture selection during the task (specific questioning). Children at all ages recalled logical sequences better than illogical ones. Second- and fifth-grade children recalled animal episodes better than geometric form episodes. Children at all ages showed a correspondence between strategy use and metamemory as assessed by verbalization of relationships among pictures during the specific questioning. However, when the more typical general question format was used to assess metamemory, strategy use preceded verbalized knowledge of strategy use.  相似文献   

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Children's avoidance responses were conditioned and then extinguished in a laboratory analog of a social threat situation. Aversive events (story interruptions) were programmed to follow either 100% (group E100) of the signals (threats), 60% (group E60) of the signals, or 20% (group E20) of the signals during acquisition. The subjects could avoid the signal and/or the aversive event by responding with lever presses above criterion level. Results indicated that groups E100 and E60 were generally not different from each other but avoided significantly more interruption and signals and responded at a higher rate than group E20. Groups E100 and E60 both shifted their responding from approximately equivalent probabilities of signal and interruption avoidance to relatively greater avoidance of interruptions during acquisition, and then shifted back to equivalent probabilities of signal and interruption avoidance during extinction. Results were discussed in terms of the function of threats as discriminative stimuli.  相似文献   

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Freud's assertion notwithstanding, the attachment relationship is not “without parallel” in social life. Children's attainments in forming attachments to parents parallel the steps they take in relating to their peers. During the first 3 years of life, in both domains, infants come to recognize prospective social partners, communicate with them, engage them in patterned interaction, including both cooperation and conflict, learn from their presence and actions, and interact in idiosyncratic ways with particular companions. Toward the end of this period, children show signs of acquiring generalized concepts of the social relationships in which they engage. It is proposed that biological constraints on learning promote human infants' interest in and rudimentary abilities to interact with other members of their species. Subsequent incidental and intentional learning processes shape both the child's attachments and less intense relationships with other persons.  相似文献   

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The concept of social competence presents problems for conceptualization and assessment. At times researchers have tried to circumvent these problems by defining competence in terms of specific capacities or skills, with the consequence that the integrative potential of the concept is lost. On the other hand, more molar definitions (e.g., “effectiveness”), while being true to the integrative nature of the construct, provide little guidance for assessment. In this paper a developmental perspective on competence is presented which is congruent with a molar definition of competence while still guiding assessment efforts. In addition to this developmental viewpoint, certain practical guidelines are presented for assessment of competence across ages. These include the use of broadband assessments, which are tied to real-life adaptational problems, call for the coordination of affect, cognition, and behavior, and tax the integrative capacities of the child. Initial validation of the developmental competence construct and this approach to assessment is presented.  相似文献   

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The role of comprehension training in the selective imitation of indirect-direct object sentences was assessed for six preschool children. A modeling condition resulted in normal usage of indirect-direct object sentences for five of six subjects, but reversed usage was not obtained when modeling was reversed. Subsequent receptive comprehension training on normal and reversed forms of indirect-direct object sentences resulted in generalization to the productive mode. These results were related to an hypothesis about language acquisition in which selective imitation is a function of comprehension.  相似文献   

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Reviewer reliability is examined for the first 2 years of operation of Developmental Review. Using the statistic, Finn's r, summary recommendations on publishability are shown to be higher in reliability than previously reported for other journals. Separate rating scales are shown to be less reliable than summary recommendations. Finn's r is compared with the intraclass correlation coefficient and shown to be a better method for examining reviewer agreement across different journals. Potential causes of high reviewer agreement for Developmental Review are discussed, and the importance of the distinction between reliability and validity of reviews is noted.  相似文献   

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Groups of 5-year-olds in two experiments described multidimensional triangles for a listener. The attribute differentiating referent triangles from nonreferent triangles in Experiment I was constant across trials for the simple condition group, while any one of three attributes was distinctive on a given trial for the complex condition group. One-adjective messages by subjects in the simple condition were virtually always informative; in the complex group, such messages were predominantly ambiguous. The boundaries of the variation effect were assessed in Experiment II. In addition to the simple-complex variation of the relevant attributes, the values of the irrelevant attributes either varied across trials in the diverse groups or remained constant in the constant groups. One-adjective messages were informative only in the simple-constant group; in the other groups, such messages were predominantly ambiguous. Thus, young children can base their communications on a comparative analysis of stimulus arrays, but performance deteriorates when there is any variation in relevant or irrelevant attributes. These results were discussed in relation to various theories of the development of meaning and communication: the cognitive overload theory, the broad context theory, and the perceptual saliency theory.  相似文献   

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