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Retention of a balance skill as a function of initial ability level.

Abstract To examine the hypothesis that there would be differential forgetting among subjects differing in initial ability level, 150 high school males were given 50 practice trials on a balance skill, the stabilometer. Layoff intervals of 1, 7, and 14 days were interpolated between trials 20 and 21, 30 and 31, and 40 and 41, respectively. Upon completion of the testing, all subjects were ranked according to performance scores on trials 1 to 4. To investigate the problem, three subgroups of 20 subjects each were formed: a high ability, an average ability, and a low ability group. Although there were no differences in forgetting among the groups for the 1- and 7-day layoffs, a significant interaction between ability and forgetting was evidenced following the 14-day layoff.