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 & Thompson, 2010) based on a main effects model (no interaction term). Effect sizes (Cohen's d) 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. Personality and Individual Differences, 52 (1), 26-31. https://doi.org/10.1016/j.paid.2011.08.022Gaudreau, P., & Thompson, A. (2010). Testing a 2×2 model of dispositional perfectionism. Personality and Individual Differences, 48(5), 532–537. https://doi.org/10.1016/j.paid.2009.11.031本R代码基于主效应模型（不含交互项），用于计算完美主义2×2模型（2x2 Model of Perfectionism，Gaudreau & Thompson, 2010）中各类完美主义亚类型的预测值。同时依据Gaudreau（2012）中的公式计算效应量（科恩d值，Cohen's d），以检验该模型的相关假设。Gaudreau, P.（2012）。关于二元人格维度交互效应与主效应的方法学评述：以完美主义2×2模型为例。《人格与个体差异》，52(1)，26-31。https://doi.org/10.1016/j.paid.2011.08.022Gaudreau, P. 与 Thompson, A.（2010）。验证特质完美主义的2×2模型。《人格与个体差异》，48(5)，532–537。https://doi.org/10.1016/j.paid.2009.11.031