Abstract
The experiment continues an investigation (Vince, 1953) into the relation between intellectual processes and hand movements in a sensori-motor task. Subjects were required to trace a repeating pattern of circles which appeared one, two or three at a time in a slit. Only one circle at a time could be hit and subjects were instructed to discover for themselves a good path for joining the maximum possible number of circles. The experimental situation thus allowed for various levels of response: pursuit movements, predictive movements, choice and a change of plan. At the end of the experiment subjects were asked to draw their idea of the pattern.
The results support others obtained earlier in showing that in this situation the subject's idea of the pattern he is tracing is determined by his total (motor, as well as visual) response to it. In addition, there was evidence that in some cases improvements occurred in the sensori-motor performance which were not reflected immediately in the subjects' idea of the pattern.
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