Peer assessment of the German passion scale (as translated in study 1, based on the dualistic model of passion; Vallerand et al., 2003, 2019) was investigated in an online-study using a German sample of working students (N=300). Predominantly carried by the leisure and sports domain, results showed good convergence of self and peer ratings for a freely designated passionate activity via the MTMM approach (Campbell & Fiske, 1959). Limitations include the poor convergence and underrepresentation in the sample of self and peer ratings in the other activity domains (work, education, social) and the online-only nature of the study (lacking control of which peers actually participated in the study). Contributions include the additional validation effort of the German passion scale and recommendations for a in-vivo replication of the study. The SPSS data file provided here was used for the main analysis of the according publication with the R syntax also provided in this repository. Thus, you can replicate it by using the SPSS data file with the R syntax "as is". Alternatively, you can adapt the R syntax to import the .CSV file (marked "ready for analysis"). Additionally, the unprepared and unfiltered study data is provided as a CSV. file (self- and peer ratings are already merged). Of course, any data provided here is devoid of any demographic variables.