" Geoffrey Cohen and colleagues harnessed the power of values to combat the achievement gap between black and white students. They created an intervention consisting of several short writing exercises that were administered during the course of a school year. In the experimental group, each writing assignment involved writing about a personally important value. Students in the control group also completed the writing exercises but wrote about values that were important to other people. When researchers examined the students’ grade point averages at the end of the year, there was a substantial gap between the GPAs of the black and white students in the control group, but that gap was reduced by 40 percent in the important-values group. "

― , The Broken Ladder: How Inequality Affects the Way We Think, Live, and Die