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951.
The present study assessed the role of context in the acquisition and transfer of a mathematical strategy. One hundred and six children were assigned to four conditions: direct strategy instruction, guided discovery, direct teaching plus discovery, or a control condition. The intervention consisted of fourteen sessions during which the number-family strategy, useful for addition and subtraction, was taught. Third grade students in the guided discovery condition performed better than those in the direct instruction condition on far transfer problems that measured deep conceptual understanding. Students who had total or partial exposure to guided discovery held stronger beliefs and adopted more positive goals about the importance of mathematical understanding and peer collaboration, attributed less importance to task extrinsic reasons for success, and reported greater use of deep processing strategies than students exposed to direct, explicit instructions. Finally, students in the discovery conditions were able to communicate more effectively during problem solving than students in the direct instructions condition.  相似文献   
952.
Product manuals have been virtually ignored in published research despite their relevance to consumer satisfaction and marketplace safety. This study examines self-efficacy (perceptions of capabilities related to operating a product) and how it influences the effectiveness of and is also influenced by three safety message formats commonly used in product manuals (i.e., 1. safety messages presented in list format at the front of the manual; 2; safety messages presented by semantic similarity interspersed throughout the manual—chunked format, and 3. safety messages presented in a combined format—both list and chunked). As anticipated, pre-exposure self-efficacy was a significant covariate which was found to be positively related to post-exposure self-efficacy and negatively related to information evaluation. Further, controlling for pre-exposure self-efficacy, post-exposure self-efficacy was significantly lower in the combined (list plus chunked) condition. Findings of this research have important implications for the practice of repeating safety warnings and future research in the consumer information domain.Authors are listed in alphabetical order. This study was supported by an Illinois State University Research Grant.  相似文献   
953.
Retail buyers' motivational orientations can influence which tasks they select in order to perform their jobs and which kinds of buying mistakes they may be likely to make. Research reported here found that intrinsically motivated buyers were more likely to use diverse sources of information, to seek and recommend new vendors, to have more positive relationships with vendors and sales personnel, and to make fewer “Type 2” buying errors. Discussion focuses on managerial and theoretical contributions of the findings.  相似文献   
954.
955.
Abstract— Does group discussion and deliberation on one issue or task influence the members' decisions or opinions on other issues? In contrast to past research looking solely at changes in responses to the same item discussed by the group, this study examined whether group interaction results in members changing the way they make judgments on related items in the future. The results show that group discussion and consensus on one set of judgments led to a significant convergence of judgmental strategies that extended to a related (but different) set of judgments the members made later as individuals.  相似文献   
956.
An assumption of the generate/recognize model of direct and indirect memory is that the generation stage is identical on explicit and implicit tests. Two experiments were conducted to examine the generation stage by requiring subjects to write down every word-stem solution they could generate on either an implicit test, a cued-recall test, or a generate/recognize test. In Experiment 1, the subjects studied words and anagrams; target generation was not significantly different on the three tests. However, in Experiment 2, the subjects studied the target words with a context word, and saw either thesame ordifferent context with the test stem. Now the generation stages dissociated, such that the context manipulation had no significant effect on the implicit test, but on the cued-recall test, more targets were generated with the same context words than were generated with different context words. The results argue against the claim that dissociations between implicit and explicit tests are due only to the addition of recognition processes on the explicit test, because the generation processes themselves can be dissociated.  相似文献   
957.
We examined the nature of referrals to a health center-based pediatric psychology service from 1990 to 1993 and assessed the satisfaction of health professionals with these services. Archival evaluation of 1467 records showed that over half of the consultation requests came from general pediatrics, pediatric neurology, and surgical services and that 70% of the psychological services were delivered on an outpatient basis. The most frequent referrals were for cognitive/neuropsychological evaluation and externalizing behavior problems. Pediatric psychology trainees were involved in 94% of the consultations. Survey of health professionals (n = 143) indicated very high overall satisfaction with the quality of services delivered. Presenting problems yielding the greatest likelihood for future consultation requests were behavior problems, child abuse, coping with illness, and depression/suicide. Results are discussed in the context of previous evaluations of pediatric psychology services and recommendations for future evaluation research.  相似文献   
958.
The role of perceived efficacy, parent support, and community involvement in the self-esteem and ethnic identity of 68 African-American male youth were investigated in this research. The results provided support for the distinctiveness of ethnic identity and self-esteem. A sense of mastery was positively associated with both self-esteem and ethnic identity. Parent support was associated with self-esteem, while community involvement and an appreciation of African-American heritage were positively related to ethnic identity. Implications for future research and the evaluation of prevention and support programs for youth are discussed.  相似文献   
959.
This article examines two questions pertaining to the extension of infertility treatment to postmenopausal women. First, what concepts and principles of infertility practice apply to assisted reproduction for the postmenopausal patient? Second, what role should these concepts play in the development of an ethical justification for extending women's reproductive lives past the menopausal boundary? The argument offered here supports their claim to infertility services on the basis of the formal principle of justice, which requires that similar cases be treated similarly. The cases of many postmenopausal patients are argued to be relevantly similar to classes of patients who already receive assistance in reproduction.  相似文献   
960.
This paper presents a behavioral model which proposes that operants are organized and regulated into systems of responding. Multi-operant theory proposes that operants are organized into response systems that interact to adapt behavior to the complexities of the environment. The operant is the interaction between behavior and the environment which includes the conditions under which responses may occur, the class of behavior that is likely to be effective in producing outcomes, and the antecedent conditions that define the context of behavior. A central feature of this theory is that operants within a repertoire are organized into regulated systems of responding. The mechanisms of regulation are themselves operants that are learned and controlled by processes that are the same as those that govern more overt behavior. Operants stand in relationship to each other in coordinated response systems with some operants directly affecting and organizing the performance of other operants. An important implication of the systemic nature of behavioral repertoires is that bringing some aspect of a behavior class under control of new variables may demonstrate a spread throughout the entire operant system depending on past histories linking the classes.deceased  相似文献   
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