A psychologist would like to examine how the rate of presentation affects people’s ability to memorize a list of words. A list of 20 words is prepared. For one group of participants the list is presented at the rate of one word every 1/2 second. The next group gets one word every second. The third group has one word every 2 seconds, and the fourth group has one word every 3 seconds. After the list is presented, the psychologist asks each person to recall the entire list. The depen
A psychologist would like to examine how the rate of presentation affects people’s ability to memorize a list of words. A list of 20 words is prepared. For one group of participants the list is presented at the rate of one word every 1/2 second. The next group gets one word every second. The third group has one word every 2 seconds, and the fourth group has one word every 3 seconds. After the list is presented, the psychologist asks each person to recall the entire list. The dependent variable is the number of errors in recall. The data from this experiment are as follows:
1/2 Second 1 Second 2 Seconds 3 Seconds
4 0 3 0
6 2 1 2
2 2 2 1
4 0 2 1
- Can the psychologist conclude that the rate of presentation has a significant effect on memory? Test at the .05 level. Report eta2.
- Use Tukey’s Post Hoc test to determine which rates of presentation are statistically different and which are not.
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