Reviews several potential problems that often invalidate statistical tests of social theories. Discusses how there may be very serious identification problems in the estimation of the relationship between executions and homicides, and that serious questions may be raised regarding the validity of any particular estimation of this relationship.…

Anticipated demographic changes in the United States adult population in the decade between the National Adult Literacy Survey (NALS) of 1992 and the National Assessment of Adult Literacy (NAAL), which is scheduled for 2002, were reviewed. Next, the implications of those changes for the NALS and NAAL were analyzed. The analysis focused on births,…

Discussion of the use of selective dissemination of information (SDI) focuses on a study that proposed a model for evaluating the relationship between SDI and the number of publications authored by basic research scientists working in a corporate research and development (R&D) environment. Hypotheses and their findings are presented. (Seven…

Reports on a study of user-based relevance interpretations which considered the nature of users' thought processes in evaluating bibliographic citations produced by a document retrieval system. Factors found to be important include an individual's subject knowledge, professional training, educational background, anticipated usage of documents,…