PSY 3213C Lecture Notes - Lecture 15: Random Assignment, Control Variable, Internal Validity
Document Summary
Approach orientation: focus on getting questions correct, trying to succeed, and doing your best. Avoidance orientation: trying not to fail and seeking way out. Research question: color red is associated with danger, caution, and avoidance. For study one, participant # was printed in red, green, or black. I. v. was the color the # was printed it. The d. v. was how many anagrams they solved and it was measured. Did other studies as well and found that people with red numbers did worse with every test. Effects of bowl size on food consumption. Undergraduates were given either medium or large bowls and asked to serve themselves pasta. Results proved you eat more with bigger bowl. Experiments establish temporal precedence, covariance, and internal validity. Temporal precedence is usually always there because iv comes before dv. Potential threats to i. v: design confounds: another variable accidentally varies systematically along with iv.
