MGMB01H3 Study Guide - Final Guide: Hawthorne Effect, Internal Validity, Dependent And Independent Variables

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20 Dec 2016
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The method used to investigate ob is dictated by the nature of the problem that interests them. Very often, they are combined and used to complement each other. Issues and concerns in ob research: sampling. External validity: the extent to which the results of a study generalize to other sampled and settings. Will be greater when the results of a study are based on large , random samples. Large samples ensure that the results are truly representative of the individuals, groups, or organizations being studied and not just one extreme case. Random sampling: the research participants are randomly chosen from the population of interest. Ensure that all relevant individuals, groups, or organizations have an equal probability of being studied and give confidence in the generalizability of the results. Observational studies usually involve small samples but they are not randomized. Random assignment: randomly assigning participants to the experimental and control groups of an experiment.