Abstract
In previous paper (Satow, 1985), a model and a method for measuring sensory-motor skill and sensory tolerance were presented and supported by four experiments using a choice reaction task. This report presents results, obtained from middle-aged men who were older than subjects in usual experiments, supporting the acquisition of skill in the model depending on four days training. A red LED target (15.7 nit), subtending a visual angle of 27′30″ exposed for a duration of 1.5 sec., was presented at four interstimulus intervals (1.5, 2.0, 2.5, 3.0 sec.) in random order while the subject sat in a room with illumination of 7.6 nit on the average on the surface of the walls of the room. Single reactions on 120 trials, with a 3-min. rest between two groups of 60 trials were performed by each subject on each day of four days training. Two men, inexperienced in such work and aged 37 and 43 yr., volunteered as unpaid subjects.
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