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The effects of response force on microstructure were evaluated. A strain-gauge operandum permitted the manipulation of the force required to produce reinforcers (criterion responses) independently from the force defining response threshold. Thus, we could detect subcriterion forces that fell short of the force criterion. Eight rats earned food according to variable-interval (VI) 30- and 120-s schedules. The force requirements were set to 5.6 or 32.0 g; the response threshold was fixed at 5.6 g. Interresponse times were computed when subcriterion responses were both included and omitted from the analysis. Log-survivor functions of interresponse times showed that increasing force requirements elevated the mean between-bout interval of the VI 120-s schedule, but only if subcriterion behavior was excluded. Omitting subcriterion responses thus leads to overestimation of intervals separating response bouts. Increasing force requirements also increased the skewness of the between-bout distribution. A subsequent analysis found that subcriterion responses are most plentiful following reinforcer delivery, which helps to explain why their omission might inflate between-bout intervals, as this period is an important transition from reinforcer consumption to engagement in operant activity. The data suggest caution interpreting the effects of force on microstructure when subcriterion behavior is not or cannot be measured.  相似文献   

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This paper introduces a special issue on animal memory and discusses progress made as a result of the present upsurge of interest in the topic, an upsurge that owes much to developments in human cognitive psychology and neuropsychology. Work reported over the last decade has shown that the memory capacity of (at least some) animals is larger—in terms both of number of items stored and of duration of retention—than might previously have been expected. Recent physiological investigations appear to have succeeded in reconciling the effect on memory of hippocampal lesions in humans and non-humans, and further work on the hippocampus may help establish the physical nature of the changes involved in setting up memories. Theoretical accounts of animal memory rely on concepts drawn from cognitive psychology, and various experimental approaches to one particular notion, that animals may rehearse recent information, are discussed. Finally, the research papers of this issue are introduced to show their place in the broad context of memory research.  相似文献   

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Over the past 15 years, a considerable body of literature has built up concerning the automation of psychological tests. Most of this research has been in the area of clinical testing, and may be unfamiliar to many of those involved in occupational assessment. However, the growth of office automation over the past few years has provided the hardware support needed for the development of automated personnel assessment techniques in industry and commerce. The present paper: (1) reviews the major developments in the field of automated testing, bringing together the literature from the clinical and occupational fields; (2) describes the potential provided by microcomputers for the development of new forms of testing; (3) outlines certain problems peculiar to automated testing; and (4) describes the possible future development of ‘expert’ personnel assessment and selection decision support systems.  相似文献   

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This paper is a commentary on the other papers in this special issue. A speculative account of inspection time is presented. Inspection time is viewed as an index of a core information-processing ability which has a causal influence on the development of complex intellectual skills.  相似文献   

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The present article reviews the history and emerging trends in the field of psychobiography. Five historical periods are highlighted: hagiography and pre-19th century study of lives; Freud and applied psychoanalysis; psychodynamic extensions and personology; modern multi-theoretical models; and psychobiography as interdisciplinary science. The author advocates for a science of psychobiography manifested in expanded and empirically validated theoretical models anchoring research. Further, attention is drawn to the need for more rigorous historiographic research methods weighting first-person sources and incorporating mixed methods designs. Increased attention to ethical and legal issues in the conduct and reporting of psychobiographical studies is also highlighted. Finally, emerging trends in psychobiography related to research production, academic training, and organisational initiatives are presented.  相似文献   

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We review the support for, and criticisms of, the teleological stance theory, often described as a foundation for goal‐directed action understanding early in life. A major point of contention in the literature has been how teleological processes and assumptions of rationality are represented and understood in infancy, and this debate has been largely centered on three paradigms. Visual habituation studies assess infant's abilities to retrospectively assess teleological processes; the presence of such processes is supported by the literature. Rational imitation is a phenomenon that has been questioned both theoretically and empirically, and there is currently little support for this concept in the literature. The involvement of teleological processes in action prediction is unclear. To date, the ontology of teleological processes remains unspecified. To remedy this, we present a new action‐based theory of teleological processes (here referred to as the embodied account of teleological processes), based on the development of goal‐directed reaching with its origin during the fetal period and continuous development over the first few months of life.  相似文献   

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This article focuses on differences between anxiety and depression. The first study is concerned with the timing (past, present, future) of negative events associated with high levels of anxiety and depression in normal participants. Depression was associated more with past events than future events, whereas the opposite was the case with anxiety. These findings are consistent with those reported in several studies on clinical samples. In a second study, participants provided their emotional reactions to scenarios referring to negative events lying in the past or in the future with the future events being either uncertain or probable. Past events were associated with more depression and less anxiety than future events whether uncertain or probable. Probable future events were associated with more anxiety and depression than uncertain ones. Theoretical implications of these findings are discussed.  相似文献   

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The expansion of mental health services during the 1960s from a single remote mental hospital to centers and clinics in mainstream communities fostered the development of community psychology in Hong Kong. Few psychologists were initially involved in the local community mental health movement, but its momentum resulted in increasing numbers of practitioner psychologists working in community-based service settings. Community psychology in Hong Kong today consists primarily of service delivery, but also includes applied research, community organization/consultation, and community education. Despite having many parallels with the American situation, key concepts underpinning the practice of community psychology in the Territory possess their own character as a reflection of nuances in the local scene. Prospects for the continued development of community psychology in Hong Kong appear favorable. Of special relevance is the field's potential contribution to a better understanding of the psychological phenomena associated with the Territory's sociopolitical transformation in 1997.  相似文献   

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A survey study and two experiments were done to test the hypothesis that social flow is more enjoyable than solitary flow. In the survey study it was found that recalled social flow experiences were rated more enjoyable than solitary flow experiences. In the first experiment when challenge and skill were the same across social and solitary conditions, social flow was reported to be more enjoyable than solitary flow. In the second experiment when the level of social interdependence was manipulated it was found that participants in highly interdependent teams reported more joy in flow than individuals performing less interdependently. In both experiments, people playing simple paddleball games reported and expressed more joy performing with others than alone. Taken together, the three investigations support the conclusion that doing it together is better than doing it alone. Solitary flow, while quite enjoyable, is not as enjoyable as social flow.  相似文献   

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Humans vary considerably in their ability to perform and learn new motor skills. In addition, they respond to different performance and practice conditions in varying ways. Historically, experimental psychologists have characterized these differences as ‘experimental noise’, yet for those who embrace differential psychology, the study of individual differences promises to deepen insights into the processes that mediate motor control and learning. In this paper, we highlight what we know about predicting motor learning based on individual difference characteristics and renew a call made by Lee Cronbach several decades ago to combine the methodologies used by experimental and differential psychologists to further our understanding of how to promote motor learning. The paper provides a brief historical overview of research on individual differences and motor learning followed by a systematic review of the last 20 years of research on this issue. The paper ends by highlighting some of the methodological challenges associated with conducting research on individual differences, as well as providing suggestions for future research. The study of individual differences has important implications for furthering our understanding of motor learning and when tailoring interventions for diverse learners at different stages of practice.  相似文献   

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