Research on implicit beliefs or theories about intelligence has shown that those with entity theories tend to be oriented toward performance goals--that is, toward documenting their intelligence, while those with incremental theories tend to be oriented toward learning goals--that is, toward developing their intelligence. This paper discusses measures used to assess individuals' theories, confidence, and goal orientation. Appendices provide: (1) an intelligence belief measure suitable for children 10 years of age and older; (2) three confidence measures: one suitable for children 9-12 years of age, and two suitable for children of 12 years and older; and (3) a goal orientation measure. Concluding remarks express the hope that the measures will prove to be useful to other researchers. (RH)