著者

小山田 隆明 Takaaki OYAMADA 仙台大学 Department of Psychology SENDAI COLLEGE

出版者

仙台大学学術会

雑誌

仙台大学紀要 = Bulletin of Sendai College (ISSN:03893073)

巻号頁・発行日

vol.1, pp.101-107, 1969-02-01

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The field of open-ended cognitive tasks in the experimental sensory deprivation is reviewed with the aim of attaining a frame-work which systematize many experimental findings. Major studies were discussed briefly. The following hypothesis was supported ; sensory deprivation impaired the higher order function of human beings, because sensory deprivation impaired or deteriorated the functions of organizing, apperceiving and verbalizing the cognitive objects, which can be regarded as the higher order function of human beings. Moreover, open-ended cognitive tasks were divided into three types according to the condition of the performance. The open-ended task consists of the way of the performance, the stimulus and a goal, then (1) the stimulus is self-imposed, and the goal of the task is unknown, self-defined and unstructured, (2) the stimulus is given, and the goal of the task is unknown, self-defined and unstructured, (3) the stimulus is given, the goal of the task requires the agreement with a certain criterion. Within 24 hrs. to 48 hrs. sensory deprivation, the deteriorative effects of sensory deprivation on the performance of the openended cognitive task were weakened in the degree that the open-ended cognitive task have some characteristics of the closed-end cognitive task, whose solution depends on the use of overleaned, structured and logical steps to reach a definite answer.