The Dogmatism Scale lacked construct validity due to low consistency and yea-saying bias.

Evidence

Rokeach’s elaborate conceptualization failed to be represented on the Dogmatism Scale, which had almost minimal levels of internal consistency, and then shot itself in the foot (heart and head) by failing to control for yea-saying. Thus the primary measure had virtually no construct validity, and the die was cast. — Bob Altemeyer, The Authoritarian Specter, 2799

Categorization

• XREF: Echoes the critique of psychometric instruments in the Frankfurt School’s empirical work — valid instruments are as contested as theory.
• DEFINE: Yea-saying / acquiescence response-set as a measurement contaminant that killed the D Scale’s validity.