After calculating the marginal means in the table below, which variable has a significant main effect? (assume any difference between the means implies the main effect is significant)





a. gender

b. day of week

c. both gender and day of week

d. neither gender or day of week


c. both gender and day of week

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a. Research-based and universally designed practices b. Progress monitoring c. A hands-on engaging and interactive curriculum d. All of the above

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Which ethical code monitors and evaluates the work of IRBs?

a. Common Rule b. Nuremberg Code c. Belmont Report d. APA Code of Ethics

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When performers tackle problems that are too difficult, they often feel:

a. inspired b. challenged c. excited d. helpless

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