PSYB04H3 Chapter Notes - Chapter 3: Statistical Significance, Scatter Plot, Dependent And Independent Variables
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Chapter 3 - three claims, four validities: interrogation tools for. All make statements about variables / about relationships between variables. Variable = an attribute that varies, having at least 2 levels, / values. Levels = 1 of the possible variations, / values, of a variable. Researchers in any study either measure / manipulate each v. Measured variable = a variable in an experiment whose levels (values) are observed + recorded as it occurs naturally: ex. height, iq, + bp > measured using scales, rulers, / devices, ex. gender, hair colour, depression, stress. To measure abstract variables > devise set of qs to represent the various l. s. + assign participants to be at 1 l. of the v. / another. In m. v. s you can"t assign l. s b/c you"re looking at v. s occurring naturally. Some v. s can"t be manipulated + only measured > ex. gender, iq, traits (ex. suicidality)
