This two-volume compilation classifies, describes, and critiques 159 clinical nursing instruments; 140 which measure psychosocial variables, 19 which measure physiological variables. Instruments are in various formats: paper and pencil tests, questionnaires, interview schedules, observation guides, rating scales, and mechanical devices such as electrocardiographs. The physosocial instruments are classified by variable measured (cognitive, affective, health status, and so on) and subdivided by type of respondent (health care provider, client, or significant others). Each psychosocial instrument is described as follows: title, author, variable, nature and content, development, reliability and validity, research applications, comments, references, source of information, and copyright information; 135 of the instruments are reproduced here. The physiological tools are classified by body system and described as follows: title, variable, parameters, research applications, description, and comments. The compilation focuses upon nursing practice, not nursing education, and stresses patient variables rather than nurse variables. Instruments were selected from the published literature in health care, education, psychology, and the social sciences. The appendices contain background information on instrument selection, and author, title, and subject indices. (CP)