Implicit in the work of S. Huck and H. Sandler (1979) is the idea that the concept "rival hypotheses" refers to some kind of alternative explanation. Rather than being threats to internal validity, rival hypotheses, in their view, are interpretations that differ from those of the researcher. This paper broadens the idea to include any…

This supplement has been prepared to be used with Office of Education Bulletin 1930, No. 24, which is the latest complete bulletin of accredited secondary schools in the United States. It shows under each State: First, names of schools which should be added to the corresponding list in the bulletin; next, those which should be removed whether…

The logic of different types of weighting are discussed, and experiments testing weighting schemes of these types are described. The results show that one type of weighting leads to material performance improvements in quite different collection environments. (22 references) (Author)

A cluster analysis procedure is described in which 288 journals in the disciplines of physics, chemistry and molecular biology are grouped into clusters. Tabulation of citings to and from each journal processed provides the basis for clustering. (18 references) (Author/RS)

Librarians are not professionals because they are not involved with saving lives. However, their job is to be a curator of civilization. (DH)

Groups of middle-aged and elderly women were compared on problem solving behavior. Results indicated a decline in the use of classification skills among the elderly and an inability to use constraint-seeking questions. (ST)

The relationship between learning, development and ability factors is considered. (ST)

This is the continuation of the guide to the organization of small technical libraries. (The first part appeared in the September-October Bulletin and is LI 502 590.) This part deals with general processing, the application of mechanized and other non-traditional processes, information work, the future, and includes the bibliography. (93…

The Hines-Harris computer filing code is examined with reference to the basic nature and function of the period subdivision in subject headings and with regard to its use from the catalog user's point of view. (9 references) (Author/SJ)

A system of automatic indexing based on Baye's theorem is described briefly. (18 references) (Author)

A bibliographical review of works on Chinese scholarship and books is presented. Selected documents relating to the pursuit of scholarship, the production (including printing), distribution and conservation of books, classification and cataloging and libraries are briefly annotated. Bibliographies and general works are also mentioned. (74…