PSY 105 Midterm: Chapter 2 - Psychology As A Science
30 Sep 2015
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Operational definition: how we (the researcher) decide to measure our variable. Hypothesis: what you think will happen and states your prediction in a way that can be tested and found to be either true or false. Variable: a condition, event, or situation that is thought to be a factor in changing another condition or event (independent variable) Operationalize: develop a very precise definitions of the independent and dependent variables that allow you to measure and test them. Population: the entire group of interest to researchers. Sample: a portion of any population that is selected for the study. Random selection: randomly choosing a sample from a population. Sampling bias: choosing a sample that does not represent your population. Experimental group - the group that is exposed to the iv (manipulation or treatment) Control group - the group that isn"t exposed to the iv; this group is used to compare how the iv changes the dv.
