For a paper in my cognitive psych class i must identify the independent and depe

Question

For a paper in my cognitive psych class i must identify the independent and dependent variables in the musics affect on academic performance. The testing procedure is 10 minutes of a Mozart piece, 10 minutes of a relaxation piece, and 10 minutes of silence before an IQ quiz (Stanford-Binet intellencence scale).Three tests were given, a pattern analysis test, multiple choice matrices test, and a multiple choice paper folding and cutting test (all three were at the .01 level of signifcance). Making them equal measures of abstract reasoning ability.
What are two ways in which the experiment could be modified to make the results more generalizable?

Explanation / Answer

One way to make the study more generalisable is to increase the sample size and extend the sampling frame. By having a large pool of individuals, we can observe an approximately normal distribution. Furthermore, instead of measuring IQ, the researchers should be measuring indicators of academic performance such as examination graves. This is because the IQ test is not a valid indicator of academic performance.

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