Most published research focuses on describing differences between groups of people (e.g., women and men), while neglecting similarities which are arguably at least as interesting and important. Building on findings from cross-cultural and gender research, I will show that natural groups (e.g., women and men, Christians and Muslims, immigrants and natives) are typically more similar than different across most psychological variables (e.g., attitudes, values, cognitive abilities). Next, I will demonstrate that describing similarities between groups of people alongside differences has a range of advantages over solely describing differences. First, such a balanced portrayal of research findings helps people to estimate actual effect sizes more accurately. Second, it can improve intergroup attitudes. Those effects are consistent across a range of natural groups, including locals vs immigrants, leave vs remain voters of the Brexit referendum, and women vs men. The effects are stronger when similarities and differences between groups are visually displayed as opposed to written text and the intervention impacts general attitudes but not intentions. Together, changing the way researchers report their findings is a simple low-cost intervention which can lead to more accurate perceptions of research findings and improved intergroup attitudes.