Multiple Choice
Laura has developed a new treatment to increase spatial ability. She randomly assigns students to either her intervention or a control condition. In the treatment condition students engage in working puzzles for twenty minutes a day for 10 days. Unfortunately, students do not like her intervention and refuse to do puzzles for all of the days. When she examines post-test means on the spatial ability measure, there are no differences between her treatment and the control condition. Which of the following demonstrates a threat to validity demonstrated in this study?
A) Maturation
B) Testing
C) Instrumentation
D) Mortality
Correct Answer:
Verified
Correct Answer:
Verified
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