A basic assumption of this study is that the meaning continuum registered by an adjective pair remains relatively constant over a large universe of concepts and over subjects within a relatively homogeneous population. An attempt was made to validate this assumption by showing the invariance of the factor structure across different types of subjects, and across different classes of concepts. The existence of systematic response tendencies independent of the meaning of the adjectives was demonstrated. Although the substantive results agreed generally with the Evaluation, Activity and Potency dimensions of earlier research, notable differences were found; specifically, that a clear separation between a hedonic response and a judgment of values seems to exist. The data from the 60 developed scales suggests seven useful composites which may be used fairly confidently (with similar samples) to measure attitudes without the need to factor analyze the scales for the new data. (TA)