Research method information system
1. Read Bono & McNemara (2011) for a short recap of method and design issues as we
transition into analyses. Read T&B ch 5 for an introduction to the Regression framework.
Read chapter 19 from Pedhazur and Schmelkin (1991), paying particular attention to (a) the
procedures for dummy coding, effect coding, and contrast coding (which is discussed in the
section on multiple comparisons among means); and (b) how should the regression
coefficients from these procedures be interpreted. Next, read Cohen (1983), which concerns
the costs of dichotomizing continuous variables. In your opinion, why do researchers
continue to dichotomize continuous variables, despite the drawbacks of this procedure??
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