PS101 Lecture Notes - Lecture 2: Null Hypothesis, Social Desirability Bias, Sampling Bias
Document Summary
Chapter 2 + app b: research/statistics in psychology. Theory: system of interrelated ideas to explain set of observations relationship between two variables (anything measureable that is controlled/observed in the study) Hypothesis: statement of (example: theory pets bring joy to our lives: observations: money spent on pets, pets are family members and make us feel good) Hypothesis: what will be empirically tested in the study, more specific translation of the theory, always include 2 variables (the outcome or comparison) and relationship (example: pets decrease blood pressure) Complete hypothesis: 2 variables, relationship and operational definitions (example: adopting a dog or cat from a shelter decreases blood pressure) Experimental research: causation among variables: manipulate something, control other things, measure an outcome. If all else is equal, then our manipulation caused outcome. Group: measured, thought to absence of the iv experimenter presence of the be impacted by the iv (no treatment) varies/manipulates to. F: within-subjects design (participants serve as their own control group)
