PSY 113 Lecture Notes - Lecture 2: Caffeine, Dependent And Independent Variables, Null Hypothesis
Document Summary
***why is the experiment so special? cause and effect*** Then, we form a hypothesis or a simple testable statement. A simple, testable statement about cause(s) and effect(s). Ex/ caffeine ingestion speeds up reaction times. We want to disprove the null hypothesis. That the independent variable does not affect the dependent variable. With random assignment of subjects to groups. Finally, we try to control any potential confounding variables , such as: And we use double-blind vs. single-blind procedures. Double-blind neither researcher nor participant know whose in what group. Single-blind only the researcher knows whose in what group. They only determine if two variables are related.
