This document summarizes a study that examines the relationship between board diversity and earnings quality of firms listed on the Amman Stock Exchange from 2010 to 2019. The study measures board diversity based on gender, experience, age, and religion of board members. It finds that gender, experience, and age of board members significantly affect earnings quality, but religion does not. This suggests that more diverse boards in terms of these characteristics can enhance earnings quality. The study provides implications for Jordanian policymakers to promote more diverse boards to improve corporate governance of listed firms.