1. Every study has an independent variable. a. True b. False 2. Every study has a dependent variable. a. True b. False 3. Explain how internal validity is increased in a study using...

1. Every study has an independent variable.

a. True

b. False

2. Every study has a dependent variable.

a. True

b. False

3. Explain how internal validity is increased in a study using systematic/controlled measures of behavior.

4. About how many students received an A on the final? How many received a D or F?