Item discrimination for instruments used to measure characteristics by means of group responses is stressed. It is argued that a percentage of the total sum of squares which is due to groups can appropriately be used as an index of item discrimination.

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Descriptive terms and concepts used in the statutory recognition of psychologists are being interpreted and used in various ways by different writers. This variable usage of terms introduces confusion and misinformation into the psychological literature. The authors are concerned about this lack of common definition and apparent unfamiliarity with the actual licensing procedures in different states. This article presents statutory interpretations that are common in many boards of psychologist examiners. The article reflects the experience of both authors as past chairs of their respective states' Board of Psychologist Examiners and their firsthand experience with licensure procedures. Both authors have served on committees of the American Association of State Psychology Boards and continue their active involvement in issues surrounding statutory recognition of psychologists.Editor's Note. This is a solicited article. American Psychologist Associate Editor Peter E. Nathan asked Jack Menne and Art Wiens to write an article that would respond to the recent plethora of AP articles criticizing licensure and questioning its ultimate worth to society. Some of what has been said about licensing is criticized here; some is supported. The aim of the article overall, though, is to provide a balanced statement on licensure written by persons who have continuously and actively been involved in the licensing process in their own states.

This research was directed at an examination of the pyschometric properties of the Ross Educational Philosophical Inventory (REPI), an instrument designed to investigate underlying philosophical beliefs influencing teaching behaviors and policy decisions of educational administrators. The REPI claims to measure individual attitudes with respect to four philosophical systems—Idealism; Realism; Existentialism; Pragmatism. Content evaluation and second-order factor analyses resulted in the dimensionalizing of two higher-order factors empirically fitting the REPI categories of Idealism and Existentialism. Reliability estimates for these two dimensions suggest further research directed at improving these two scales.

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