Note: To protect anonymity, the variables age and gender were deleted from all data files. Relevant information can be seen in the output file. Exelsheets contain data on page 1, variable information and/or the codebook on the following sheet pages. zip-folder *Study 1* **01_Pre-Analyses** Statistical analyses were computed with SPSS 26 (IBM Corporation, Armonk, NY, USA). The sample was randomly split into two subsamples (subsample 1 and subsample 2). The two subsamples did not differ with regard to age, gender, level of education and relationship status (see Output_Study1_pre-analyses). **02_CFAs** Further statistical analyses were calculated using R version 4.0.4 (R Core Team, 2019). Scalewise CFAs were conducted with maximum likelihood estimation and Satorra-Bentler scaled (mean adjusted) test statistics for testing unidimensionality of the scales (Raykov, 2012). The item assignment to the scales followed Halberstadt (1986). Items with insufficient loadings (i.e. <.32; Worthington & Whittaker, 2006) were deleted in subsample 1. For subsample 2, we again calculated model fits by means of CFAs for the final item solution of the German version. zip-folder *Study 2* Statistical analyses were implemented using SPSS 26 (IBM Corporation, Armonk, NY, USA). We calculated Pearson’s r to investigate the validation of the FEQ-GR scores of the three scales (positive, negative-dominant and negative-submissive family expressiveness).