Dimensional analysis of motion: VII. Extent and direction of manipulative movements as factors in defining motions

Abstract

Forty-two Ss were tested on a repetitive switch-turning task under six experimental conditions (manipulation extents of 40, 80 and 120 degrees, both clockwise and counterclockwise). Each S performed one trial under each condition on 7 successive days. It was found that (1) manipulation movements are more benefited from practice than travel movements, (2) duration of both manipulation and travel time is significantly increased with greater extents of manipulative movement, and (3) clockwise direction of movement was significantly superior to counterclockwise movements after practice. (PsycInfo Database Record (c) 2025 APA, all rights reserved)