PSYC 102 Chapter Notes - Chapter 1: Naturalistic Observation, Scatter Plot, Statistical Significance
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PSYC 102 Full Course Notes
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Correlational research: describes relationship (direction & strength) between 2 variables, correlation coefficient (r): index of relationship between 2 variables, scatterplot: graphed dots that represent values of 2 variables. Experimental research: manipulating +1 iv to determine effect on dv. Research: explanation of events by offering ideas that organize what"s observed. Hypothesis: testable predictions that specify what results would support theory, null: there"s no relationship. Operational definition: carefully worded statements of exact procedures used in study (e. g. iq) Variables: control: variable you maintain constant, confound: factor other than iv that might produce an effect on dv, dependent: variable whose outcome changes because of iv (e. g. iq) Regression towards the mean: tendency for extreme scores to fall back towards average. Groups: experimental: group exposed to iv, control: group not exposed to iv, serves to evaluate effect of iv. Random assignment: randomly assigning participants to experimental & control groups, minimize preexisting differences between different groups.
