Two analyses were conducted to examine the discriminant validity of 30 facet scales from the Revised NEO Personality Inventory (NEO-PIR). To examine cross-observer validity of specific variance in the facet scales, partial correlations between adults' self-reports and 250 peer and 68 spouse ratings on the facets were calculated, controlling for the 5 common factors. All 60 convergent partial correlations were positive, and 48 (80%) were significant. In the 2nd analysis, Adjective Checklist correlates of the facet scales were identified in a sample of 305 adults. Judges correctly matched scales to correlate in most cases, providing additional evidence for discriminant validity.