R Code for calculating predicted values and effect sizes in the 2x2 Model of Perfectionism (main effects model).

R code to calculate predicted values for subtypes of perfectionism in the 2x2 Model of Perfectionism (Gaudreau &amp; Thompson, 2010) based on a main effects model (no interaction term). Effect sizes (Cohen's <i>d</i>) are also calculated to test the hypotheses of the model based on equations in Gaudreau (2012).Gaudreau, P. (2012). A methodological note on the interactive and main effects of dualistic personality dimensions: An example using the 2× 2 model of perfectionism. <i>Personality and Individual Differences,</i><i> </i><i>52 </i>(1), 26-31. https://doi.org/10.1016/j.paid.2011.08.022Gaudreau, P., &amp; Thompson, A. (2010). Testing a 2×2 model of dispositional perfectionism. <i>Personality and Individual Differences, 48</i>(5), 532–537. https://doi.org/10.1016/j.paid.2009.11.031<br><br><br>