An applied researcher is developing a new measure of organizational commitment for a study. In order to compare it to an existing measure of organizational commitment, the researcher would compute a _____________ correlation to show the extent to which the new measure (X) has a relationship with an outcome of interest (Y) after accounting for the effect of the existing measure (Z) on (only) the new measure (X). A. Point-biserial B. Biserial C. Partial D. Semi-partial