PSY326Week4DQ2 - Firstly, researchers have control over the...

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Firstly, researchers have control over the independent variable by manipulating the values over the IV. Independent variables are those variables that the experimenter purposely manipulates or controls (Smith & Davis, 2010). Secondly, experimenters have control over their environment or the setting of the experiment. Researchers have control over the environment, variables and the subjects (Wimmer & Dominick, 2006). Thirdly, researchers have control over the actual variables involved in the study. Two examples are the age or sex of the participant (Smith & Davis, 2010). The three factors that a researcher can control to limit the effects that extraneous variables can have on the results of a study are randomization, elimination, and constancy. Randomization ensures that each applicant has an equal probability of being assigned to any group in the research experiment. For example, once the scholars had volunteered for the research study on memory, Boice and Gargano (2001) indicated, “the participants were placed
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PSY326Week4DQ2 - Firstly, researchers have control over the...

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