The For The Within Subjects Design

1363 Words Apr 5th, 2016 6 Pages
For the within subjects design, the results of the congruent condition showed that the average reaction time was 27.5 seconds with a SD of 5.45. The average reaction time for the incongruent condition was 43.4 with a SD of 5.78. A histogram of that data is depicted in Figure B1. Every participant took longer to complete the incongruent condition. A resampling applet was used to predict what the results would be like if the within participants part of the experiment was done 10,000 times to see if results were significant. For the within subjects variable results showed a strong effect due to the fact that no resamples fell on the other side of zero and the p value was less than .001. Results were statistically significant because the p …show more content…
This data is depicted in a histogram Figure C2. The results show that participants between groups showed no difference in average reaction time scores.
The findings for the within participants design were significant but not for the between participants design. There was a significant main effect of the within-participants design, but there was no main effect for the between- participants design. The incongruent condition took longer to complete than the congruent condition. The participants were slower to identify the highest value when it was not the largest sized number that when it was in the largest font size. The congruent condition was easier than the incongruent condition so participant’s reaction times significantly took more time in the incongruent condition. There was no significant main effect for the between subject variable design. In the original experiment, participants with higher stress had average reaction times that were higher than those from participants with low stress, but after being resampled it did not result in statistical significance. A Java Applet was used to test for an interaction effect between stress and Stroop reaction time, and it was shown to be not significant. The difference between the reaction times between the stress conditions showed a parallel pattern for both groups of participants, which means no interaction effect. This figure is shown in Figure D1. The same applet showed that after resampled for
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