The Subtle and Overt Scale of Psychological Abuse (Marshall, 1999a) is a measure designed to examine previously unevaluated forms of psychological abuse. The scale was originally divided into seven subscales (overt: dominance, indifference, monitoring and discrediting; subtle: undermining, discounting, isolating). A sample of 172 women was used to evaluate the construct validity of this measure. In other words, the internal structure of the measure, its relation to other measures of physical and psychological abuse, and its relationship to other psychological outcomes. Empirical and theoretical approaches were used to replicate and examine the dimensions of this scale. Results revealed that this scale represents a unidimensional construct that is highly correlated to other measures of psychological abuse. Implications for future research and practice are discussed.