PSYC100 Lecture Notes - Lecture 3: Random Assignment, Internal Validity, Dependent And Independent Variables

• School: University of Delaware
• Department: Psychology
• Course: PSYC100
• Professor: Agnes R.Ly

Document Summary

Identify key characteristics of each study design using the visual below. How do these three study designs relate to the goals of science: descriptive (what does it look like?, correlation (what relates to what?, experimental (what causes what?) *directionality problem (double headed arrow; because we don"t know what causes what, we can"t make a causal statement; a, b, c variables; correlation not causation; unknown third variable explaining things *ice cream correlates to crime) To prevent unintended differences between the groups at the start of the study. *whenever you use convenient sampling it is low on external validity. Their experience in the study (bumped or not, friendly or not). The kind of hot sauce they pick and how much they use.