PSY 2405 Chapter Notes - Chapter 6: Central Tendency, Latin Square, Internal Validity
9 Sep 2015
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Woodworth emphasized the importance of control in experimental research: whether one or more independent variables are used, it remains essential that all other conditions be constant. Otherwise you can"t connect the effect observed with any definite cause : an experiment will compare condition a with condition b. Those receive either a or b but not both-between-subjects designs: named because the comparison of conditions a and b will be a contrast between two groups of individuals. Subjects in each condition have to be na ve. Subject variable (e. g. gender) is the iv: main problems to solve --> creating equivalent groups, great design to use if you want everyone to be on equal footing, creating equivalent groups, random assignment. Random selection: procedure for getting volunteers to come into your study: process to produce a sample of individuals that reflect the broader population, common in surveys. Method for placing participants, once selected for a study, into the different groups.
