Standards for talking and thinking about validity.

Standards for talking and thinking about validity have been promulgated in North America for decades. In 1954 two foundational standards were announced: (a) Thou shalt not refer to "the validity of the test" and (b) thou shalt use validity modifier labels, such as "content validity" or "predictive validity." Subsequently, in 1985, the latter became, thou shalt not use validity modifier labels.