The problem engendered by the Matching Familiar Figures (MFF) Test is one of instrument integrity (II). II is delimited by validity, reliability, and utility of MFF as a measure of the reflective-impulsive construct. Validity, reliability and utility of construct assessment may be improved by utilizing: (1) a prototypic scoring model that will enable development of MFF norms; and (2) item analyses (performed on MFF test items) results which will reveal good test items, reveal defective test items, provide a graphic display of item performance, explain the origin of the current imbroglio about MFF test reliability and validity, and indicate steps necessary to enhance MFF instrument and research integrity. The impulsive-deliberative score (ID Score) is discussed as a potentially better scoring procedure than the double median split procedure for users of reflective-impulsive category information. Despite the limitations and inchoate nature of the research presented in this paper, it would appear that research directed along similar lines would be in the best interests of the scientific method. (RL)