A cognitive psychologist studied the effects of getting enough sleep (yes vs no)

Question

A cognitive psychologist studied the effects of getting enough sleep (yes vs no) and special training (yes vs no) on memory performance. Using a between-subject factorial design, she obtained data from 28 participant, with 7 in each of the four conditions. She them analyzed the data using a between-subjects factorial ANOVA. Below is the SPSS output. a. Was the main effect of getting enough sleep significant? What is the F-value and p-value? b. Was the main effect of receiving special training significant? What is the F-value and p-value? C. Was there a significant interaction between getting enough sleep and receiving training? What is the F-value and p-value? d. Given the interaction effect, what can we conclude about the effect of training?

Explanation / Answer

Answer a

The effect is signficant. Here F = 82.286 and p-value < 0.001.

Answer b

The effect is signficant. Here F = 14.286 and p-value = 0.007.

Answer c

The interaction effect is signficant. Here F = 24.143 and p-value = 0.001.

Answer d

The effect of training leads to enough sleep.

Thanks.

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