Abstract The reaction time for subject with increase complexity is the focus of this study. The ten respondents were randomly selected on the campus of University Wisconsin at Milwaukee. Ten subjects reaction time was evaluated with a computer simulation program using one, two, or four choice trails, which lasted forty to sixty minutes. The data were analyzed using t test and ANOVA. The t test showed no significance as far as practice effects were concerned, …showed first 75 words of 10357 total…

…showed last 75 words of 10357 total…of fatigue or boredom may be a reasons that the t test were not significant. Postaman and Eagan (1949) propose that the subjects has an “concentrated attention on the stimulus,”(p. 255) if the subject becomes bored or fatigue with repeatedly doing the same task practice effect result may not occur. Another reason that practice effects result did not occur may have been the sample size and number of trials. With Rikli and Busch (1989) the sample siz