The dimensional analysis of motion: IV. Transfer effects and direction of movement.

Learning and integration of component movements in a pattern of motion.

“…Analysis of variance of the data on which the present study is based may be secured from the American Documentation Institute. 3 The present treatment of the data is mainly concerned with the quantitative relations between the manipulative and travel components of the motion pattern under the different conditions of the experiment. The following productmoment correlations have been computed: (a) between component movements as a function of days of practice, (b) between component movements as a function of the directional complexity of the motion pattern, (c) between successive days of practice for both components of movement, and (d) between levels of complexity of the motion pattern for both components of movement.…”

“…It will be noted that the travel movements showed about 13% reduction in duration as a function of practice, whereas the manipulative movements displayed a 24% change. The absolute variability of the travel movements does not change with practice, whereas this variability is reduced 3 For detailed paper (or extended version of material supplementary to this article) order Document 3696 from American Documentation Institute, 1719 N. Street, N. W., Washington 6, D. C., remitting $1.00 for microfilm (images 1 in. high on standard 35 mm.…”

“…Previous human engineering studies of motion have shown that the component movements in a single pattern of skilled activity are affected quite differently by the consequences of practice (2,4), transfer of learning (3), and other conditions (1,2). In the studies made, the manipulative and travel components of psychomotor activity have been segregated and automatically measured by special devices.…”

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

“…Inasmuch as the observations reported here show that increasing the extent of manipulation lengthens the duration of both manipulation and travel, it appears that varying the extent of any of the components of motion will have effects on other component movements involved in the pattern. Direction of travel movement has previously been shown to affect only the travel component of the motion (5). Thus, it appears that direction of movement, at least under conditions investigated thus far, influences only the component of motion within which the directional factor occurs.…”

“…In earlier investigations the problems of extent and direction of travel movements as factors in determining the duration of the manipulative and travel components of motion have been investigated (5,6). Contrary to assumptions and observations in the fields of human engineering and time and motion study, these studies indicate that greater travel distances increase the duration of both the travel and manipulation components of a motion.…”