Define the concept of a variable, distinguish quantitative from categorical variables, and give examples of variables that might be of interest to psychologists.
1. Define the concept of a variable, distinguish quantitative from categorical variables, and give examples of variables that might be of interest to psychologists. 2. Explain the difference between a population and a sample. 3. Distinguish between experimental and non-experimental research. 4. Distinguish between lab studies, field studies, and field experiments.