Samuel J. Messick III (April 3, 1931 – October 6, 1998) was an American psychologist who worked for the Educational Testing Service (ETS), known for his contributions to validity theory.
Samuel J. Messick III (April 3, 1931 – October 6, 1998) was an American psychologist who worked for the Educational Testing Service (ETS), known for his contributions to validity theory. (en)
Samuel J. Messick III (April 3, 1931 – October 6, 1998) was an American psychologist who worked for the Educational Testing Service (ETS), known for his contributions to validity theory. (en)