This document provides details about a study examining the effects of gender diversity on job performance in the banking industry. The study will use a sample of 230 middle managers from 13 commercial banks to examine how gender diversity (independent variable) impacts performance measures like profitability, efficiency, and talent retention (dependent variable). Control variables of age, education, and ethnicity diversity will also be considered. Both qualitative and quantitative research methods will be used, including questionnaires, interviews, and statistical analysis to establish relationships between the variables. The goal is to add to the limited existing research on this topic and provide insights for banks on how gender diversity may impact performance.