This research presents an in-depth investigation of the core self-evaluations (CSE) construct in several German samples. The English language (U.S.-American) version of the Core Self-Evaluations Scale (CSES; see Judge, Erez, Bono, & Thoresen, 2003) was adapted and translated into German. The study expands knowledge of CSE relationships with work-relevant experience constructs by providing the first reports of relationships with professional experience and job tenure. Criterion-related validities were examined for grade point average, organizational citizenship behaviors, and turnover intentions, extending English language based findings to a new language and cultural context
(German) for the first time. The explicit examinations of the German CSES and other demographic (age, gender) and experience variables (organizational tenure) also provide the first investigations of these relationships, advancing the knowledge about the nomological network of the CSE construct. A constructive discussion of CSE measurement issues (frame of reference and item-specific response styles) is provided in order to improve future CSE measurement.