PSYB01H3 Chapter Notes - Chapter 8: Cerebral Cortex, Selection Bias, Amygdala

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5 Dec 2013
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When particular individual characteristics are used for the bases of selecting research participants, an experimenter is often interested in studying the effects of these subject variables on a dependent measure. When exposures to events, situations, or settings that emanate from the real world define how participants are selected, we refer to this type of independent variable as a natural treatment. In studies of the effects of a natural treatment on a dependent variable, exposure and nonexposure would form two levels of the independent variable. Quasiexperiment is one that investigates the effects of a quasi-independent variable on a dependent variable. Quasiexperiment resembles a true experiment except for the degree to which an experimenter can directly control and manipulate one or more of the independent variables: can randomly assign participants to experimental and control conditions. Quasiexperiments offer a fertile research design for investigating some of the most important and creative questions in psychology.

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