A measure can pass two validity tests yet fail the rest

Evidence

As expected, the I-AB did correlate positively with the RWA in both informant and self-reports (convergent validity evidence), and was not significantly correlated with FS and FH (discriminant validity evidence). Except for those two instances, the I-AB failed to meet the other requirements for convergent and discriminant validity. — Sherman A. Lee, Chelsea A. Reid, Stephen D. Short, Jeffrey A. Gibbons, Ruth Yeh, and Matthew L. Campbell, Fear of Muslims, 101

Categorization

• XREF: Directly parallels the familiar multitrait-multimethod validity framework — expected convergence with a theoretically related construct, expected independence from unrelated ones.