This paper offers some suggestions and cautions concerning the use of the Self-Directed Search (SDS) and the Strong-Campbell Interest Inventory (SCII). A rationale for separate scoring of interest and ability sections of the SDS is provided, i.e., that correlations between interest and abilities and between abilities and vocational satisfaction are very low, but correlation between interests and vocational satisfaction is high. Research results in support of separate scoring, including the Iachon index of agreement, are presented. Implications and suggestions for the interpretation of separate interest and ability profiles for the SDS are included. Supplementary instructions for administration and a supplementary scoring sheet are attached. A discussion of possible distortions in SCII profiles due to the use of normed scores is provided. Research results which illustrate actual cases of distortion are presented. Instructions for the calculation of transformed SCII profiles in cases of suspected distortion are provided. Research results in support of the validity of transformed SCII profiles are included. (Author/JGL)