1 .		Which of the following is NOT possible using causal-comparative design? [Hint]   Seeking possible causes for a given effect.   Seeking possible effects for a given cause.   Demonstrating causation.   Comparing groups that differ on some variable.
2 .		Causal-comparative and experimental research are similar in that [Hint]   neither demonstrates causation.   both study relationships between two or more variables in one group.   both demonstrate causation.   both involve group comparisons.
3 .		Random assignment to treatment groups is characteristic of which kind of research? [Hint]   Causal-comparative   Correlational   Experimental   Descriptive
4 .		Which of the following could NOT be an independent variable in experimental research? [Hint]   Intelligence   Time of day that classes begin   Method of instruction   Size of class
5 .		A researcher studies three groups of students who vary in level of self-confidence. She finds that students with higher self-confidence are more popular among their peers. The most plausible conclusion is that [Hint]   we do not know what causes self-confidence or popularity.   self-confidence causes popularity.   popularity causes self-confidence.   self-confidence and popularity are related.