This brief discussion of measurement and evaluation in mindset shift work, which is intended as a supplement to our report, Mindset Shifts: What Are They? Why Do They Matter? How Do They Happen?, offers some guidelines and considerations that we hope will be useful to researchers and others engaged in this work. We do not pretend to have simple or easy solutions to the challenges we raise. As we discuss below, the best approach to measuring mindset shifts and evaluating mindset shift efforts will differ depending on the specific contours of the effort.