Many different systems have been developed for classifying occupations. A few of the major systems are described here, along with an idea of the kind of information collected and published by the agency using the system. (Author/SSH)

Investigated two dimensions of a typology of police officers: perspective and passion. Test results indicate these dimensions failed to identify the four police types proposed by W.K. Muir relating to dimensions of: the professional, enforcer, reciprocator, and avoider. The four types appear as general characters defined by several dimensions.…

The clustering of teacher centers facilitates teacher sharing of information and resources, encourages professional development, and assists in the change and development of the centers. (JD)

Describes ways of using Boolean questions with a clustered information file, and reviews an experiment studying the effect of such a retrieval method. (FM)

Discusses mapping science and Kuhn's theories of paradigms and scientific development. Highlights include cocitation clustering; bibliometric definition of a paradigm; specialty dynamics; pathways through science; a new Web tool called Essential Science Indicators (ESI) for studying the structure of science; and microrevolutions. (Author/LRW)

Identifies 24 thematic categories among research articles appearing in the first 10 volumes of the journal. Notes that predominant themes were test reliability and validity, acculturation and adaptation of Hispanics, and bilingual/language issues. Indicates three major clusters of researchers publishing on Hispanic issues. (SV)

Discusses models for the distribution of words in text and proposes a new model based on clustering that can be used to estimate the probability that a document contains a particular word as well as the number of distinct words in a document. Zipf's law and the Poisson approximation are also discussed. (18 references) (LRW)

A Monte Carlo study examined the statistical performance of single sample and bootstrap methods that can be used to test and form confidence interval estimates of indirect effects in two cluster randomized experimental designs. The designs were similar in that they featured random assignment of clusters to one of two treatment conditions and…

Any attempt to describe every job position and the activities contained in it would yield a confusing mass of information. Consequently, industrial psychologists have generated methods for classifying occupational positions into a smaller number of jobs or job families. Based on prior research it has been concluded that different kinds of job…

Clustering techniques seek to group together objects or variables that share some observed qualities or, alternatively, to partition a set of objects or variables into mutually exclusive classes whose boundaries reflect differences in the observed qualities of their members. This paper reviews the general principles underlying clustering…

This study was designed to investigate recall in preschool children, specifically the cuing technique and possible storage-retrieval differences. Forty-eight 4-years-old were divided into two groups. In the blocked presentation condition, items were presented in category sets of three items, with all items from a single category on cards of one…

To investigate how a child organizes new objects and how categories function for a chid, twelve 6- and twelve 8-year-olds were individually given several sorting tasks involving 21 three-dimensional nonsense objects. The child was exposed to all the objects; three objects were pointed out and withdrawn; and then the child was asked to describe…

Sorting things into groups is a basic intellectual task that allows people to simplify with minimal reduction in information. Classification techniques, which include both clustering and discrimination, provide step-by-step computer-based procedures for sorting things based on notions of generalized similarity and on the "class description"…

Two papers are included as Part Four of this report on Salton's Magical Automatic Retriever of Texts (SMART) project report. The first paper: "A Controlled Single Pass Classification Algorithm with Application to Multilevel Clustering" by D. B. Johnson and J. M. Laferente presents a single pass clustering method which compares favorably…

In the fall of 1965, San Bernardino Valley College conducted a modified "college within a college" experiment with six faculty and 34 students participating. It was hypothesized that a smaller unit, with access to the facilities of a larger unit, would have a basis for establishing an interdependence and sense of community. This pilot…