Question

A researcher is interested in studying the principle of encoding specificity. This principle states that recalling information is best when testing conditions are the same as the conditions that existed at the time of learning. The researcher recruited 20 students and gave them a lecture on an unfamiliar topic. One week later, they were asked to take a short test on the material. Half the students were randomly assigned to a large room and the other half to a small room for the lecture. When they returned for the test, they were randomly assigned again with half in a large room and half in a small room for the test.

		Testing
		Small	Large
Lecture	Small	18	8
	Large	10	16

Do you feel there is a main effect for lecture size? Type “yes” or “no” for your answer.

Do you feel there is an interaction? Type “yes” or “no” for your answer.

Answer 1

Yes, There is a main effect for a lecture size.

Yes, There is an interaction effect ( Testing*lecture size)

Above is the two way ANOVA example.