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EXPERIMENTAL RESEARCH. EXPERIMENTAL RESEARCH. A. Explores cause and effect B. Components of an Experiment 1. Random Selection (already chatted about) 2. Random Assignment : Every participant has an equal chance of being placed in the exp. or control group.
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EXPERIMENTAL RESEARCH A. Explores cause and effect B. Components of an Experiment 1. Random Selection (already chatted about) 2. Random Assignment: Every participant has an equal chance of being placed in the exp. or control group
Experimental Research 3. Experimental Condition or Group: Receives the experimental treatment 4. Control Condition or Group: Receives no treatment/used for comparison
Experimental Research 5. Placebo Contains no active ingredients but still produces an effect (often due to expectations) 6. Independent Variable: Manipulated by the researcher (“the treatment”) 7. Dependent Variable: Measured by the experimenter
Experimental Research 8. Operational Definitions of Variables: Specific description/how variable is used in research 9. Replication: Repeat… easily done because of operational definitions
Name the IV and DV for each scenario: Helpful hint: First name the two variables in the study; then figure out which one influences the other. [The change in the IV influences the DV] • A study examining if TV violence increases aggression in children. • A study predicting that nicotine will increase people’s reaction time while catching frisbees. • A study examining if life satisfaction improves with age. • A study predicting that high school sports build interpersonal skills. • How do changes in work space affect employee productivity? • A study predicting that pedestrians will walk faster on hot days versus cold days. • Are younger siblings treated better by their parents than older siblings?