We propose tests of the two assumptions under which anchoring vignettes identify heterogeneity in reporting of categorical evaluations. Systematic variation in the perceived difference between any two vignette states is sufficient to reject vignette equivalence. Response consistency—the respondent uses the same response scale to evaluate the vignette and herself—is testable given sufficiently comprehensive objective indicators that independently identify response scales. Both assumptions are rejected for reporting of cognitive and physical functioning in a sample of older English individuals, although a weaker test resting on less stringent assumptions does not reject response consistency for cognition.

Additional Metadata
Keywords cognition, health, reporting heterogeinity, survey methods, vignettes
JEL Discrete Regression and Qualitative Choice Models; Discrete Regressors (jel C35), Survey Methods (jel C42), Health Production: Nutrition, Mortality, Morbidity, Substance Abuse and Addiction, Disability, and Economic Behavior (jel I12)
Persistent URL hdl.handle.net/1765/26872
Bago d'Uva, T.M, Lindeboom, M, & O'Donnell, O.A. (2011). Slipping Anchor?: Testing the Vignettes Approach to Identification and Correction of Reporting Heterogeneity . The Journal of Human Resources, 46(4 (Fall)), 875–906. Retrieved from http://hdl.handle.net/1765/26872