Which answers are incorrect and why?

5 6 Instructions: For the following list of examples, identify the dependent variable and independent (or quasi-independent) variable. 1. A researcher tests whether cocaine use increases impulsive behavior in a sample of cocaine-dependent and cocaine-inexperienced mice. Independent Variable: N/a Quasi-Independent Variable: Cocaine-dependent and cocaine-inexperienced mice are independent variables. Dependent Variable: Impulsive behavior is the dependent behavior. 2. A professor tests whether students perform better on a multiple-choice or fill-in-the-blank test format. Independent Variable: The independent variable would be the type of test administered. Quasi-Independent Variable: n/a Dependent Variable: The children's overall performance on the tests is the dependent variable. 3. A researcher tests whether smoking by parents influences children's attitudes toward smoking behavior. Independent Variable: n/a Quasi-Independent Variable: The parents smoking would be the independent variable. Dependent Variable: Children's attitudes towards smoking behavior. 4. A social scientist tests whether attitudes toward morality differ based on political affiliation (Democrat or Republican). Independent Variable: N/A Focus