Questions about gender differences in the workplace usually attract much attention-but often generate more heat than light. To examine gender differences in several facets of scientific productivity and impact, a quantitative, scientometric approach is employed. Analyzing a sample of industrial and organizational psychologists (N authors = 4234; N publications = 46,656), this study raises both questions and concerns about gender differences in research, by showing that female and male I-O psychologists differ with regard to publication output (fewer publications authored by female researchers), impact (heterogeneous, indicator-dependent gender differences), their publication career courses (male researchers' periods of active publishing last longer and show longer interruptions), and research interests (only marginal gender differences). In order to get a glimpse of future developments, we repeated all analyses with the student subsample and found nearly no gender differences, suggesting a more gender-balanced future. Thus, this study gives an overview over the status quo of gender differences in an entire psychological sub-discipline. Future research will have to examine whether these gender differences are volitional in nature or the manifestation of external constraints.