Independent variables, dependent variables, t-tests, anovas, the experimental method, between subjects, within subjects, confounds…confused? You won’t be after you watch this week’s video episode. Learn research methods in psychology the fun way – by choosing an interesting topic. In this video I explain the basic concepts of research while examining the effect of gray hair on credibility. More fun than…let me think…well, trust me, it’ll be interesting.
- Independent Variable: the variable you manipulate (“type of hair” in this example).
- Dependent Variable: the variable you measure (“credibility” in this example).
- Operational Definition: the exact data that you will collect. In this example, a subject’s rating on a 1 to 10 credibility scale is my operational definition of credibility.
- Informed Consent: the explanation you give to participants before the study begins. This statement may to tell them exactly what the study is about, but it should provide enough information regarding what the study is about so that they can decide not to participate if they wish (and they still get full credit or payment for coming to the study.
- Debriefing: when the experiment is over, participants are given more detailed information about the study and what the experimenters are studying. Typically, participants are also give an email address or phone number they can call if they have questions or concerns.
Related Episodes and Research
- A somewhat more complex research design is covered in this video episode on factorial designs
- Check out episode 3 in which I discuss hypotheses and Popper’s important concept of falsifiability.
- Looking for more fun with research? Check out my episode on how consumer researcher‘s carefully watch your behavior in the grocery store.