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OBSERVATION AND DESCRIPTION
ASSOCIATION CORRELATION AND REGRESSION
14 other sections not shown
aggression ANOVA anxiety assessed associated baseline behavior between-subjects bias causal inference causal relationships cause Chapter classificatory variable coefficient consider control group design demand characteristics dependent variable determine drug employed error variance evaluated example experimental control experimental effect experimenter bias factor analysis Figure grades illustrate important increase individuals influence interaction interest internal validity interpretation interrupted time series investigator involved logic manipulated mathematical mean measure method mixed design multiple nonprobability sampling null hypothesis observed obtained occur participants particular percent performance placebo population possible prediction pretest problem procedure produce programs psychological question random assignment randomly raters regression reliability responses reward sacrifice bunt sample schizophrenic scientific scores selected selection bias series designs situation social science research social scientists statistical conclusion validity statistical significance subjects Suppose systematic Table technique theoretical theory third variable threats treatment Type II error