A review of the relevant literature describing mathematical and empirical properties of ipsative and nonipsative measures is undertaken. This literature is evaluated and summarized, and the need for a simple procedure for quantifying the "degree of ipsativity" in measuring instruments is indicated. The present paper concludes that although nonipsative (normative or forced-choice normative) measuring instruments can be highly effective in most assessment situations, purely ipsative instruments, on the other hand, possess such extensive psychometric limitations that use of such instruments is not recommended.1 This discussion represents an extensive revision of a report (Smith, 196S) which was written when the author was associated with the