What happens with more female decision-makers in the room? 
Promotion rates for women applying for tenured professorships in Spain (2002-06) and Italy (2012-14). Applicants were evaluated by committees of randomly-selected full professors that often included few or no women. When evaluation committees happened to include more women, however, female applicants did not fare noticeably better. 
Note: Shaded areas are 95% confidence intervals.
Source: calculations based on data provided by the authors