Differences between traditional linear regression and a Bayesian approach to classification are discussed. Classification consists of assigning subjects to one of several available treatments on the basis of their test scores when the success of each treatment is measured by a different criterion. Formulating this problem as an empirical Bayes…

Compared the efficacy of two methods of cluster analysis, the unweighted pair-groups method using arithmetic averages (UPGMA) and Ward's method, for students grouped on intelligence, achievement, and social adjustment by both clustering methods. Found UPGMA more efficacious based on output, on cophenetic correlation coefficients generated by each…

Statistics education is under review at all educational levels. Statistical concepts, as well as the use of statistical methods and techniques, can be taught in at least two contrasting ways. Specifically, (1) teaching can be theoretically and mathematically oriented, or (2) it can be less mathematically oriented being focused, instead, on…

The present exploratory study examined the involvement of 77 Mexican-origin fathers in their school-age (grades 4-6) child's education. Fathers were classified into one of three groups based on their linguistic acculturation status. The three groups were predominantly English-speakers (n = 25), English/Spanish-speakers (n = 27), and predominantly…

The tables in this report present certificates and degrees conferred during the 2005-06 academic year by the public and independent institutions of higher education in West Virginia, as well as trends in selected areas. Contents include: (1) Certificates and Degrees Awarded by Level, 2005-06, Public and Independent Institutions; (2) Certificates…

THIS PAPER DEALS WITH SOME TESTS OF HYPOTHESIS FREQUENTLY ENCOUNTERED IN THE ANALYSIS OF MULTIVARIATE DATA. THE TYPE OF HYPOTHESIS CONSIDERED IS THAT WHICH THE STATISTICIAN CAN ANSWER IN THE NEGATIVE OR AFFIRMATIVE. THE DOOLITTLE METHOD MAKES IT POSSIBLE TO EVALUATE THE DETERMINANT OF A MATRIX OF HIGH ORDER, TO SOLVE A MATRIX EQUATION, OR TO…

The need for an empirically defensible means of sequencing instruction appears to have been the primary motivator for research into learning hierarchies. Four methods for generating candidates for learning hierarchies were reviewed: introspection, formal analysis, observation, and statistical "fishing." Experimental transfer of training…

The traditional dichotomies of urban and rural may no longer be valid. Investigating whether or not there are socially significant areal units to redefine rural and urban areas, the report described one attempt to delineate such units and to test them for sociological utility. Counties were placed in homogeneous social units based upon the…

Instructional task variables of analytical explanation and sequence were studied in two experiments to assess the systems approach proposition of efficiency and effectiveness in concept learning. The independent variable of analytical explanation consisted of two components: a procedure for focusing the subject's attention on the critical…

The primary purpose of the study was to utilize the "functions" of an industry, as opposed to the more traditional use of the "job titles," to develop a curricular basis for educational programs to meet the needs of potential workers in an industry, with the scope of the study limited to the management and service functions. In the first phase of…

Statistically based risk assessment devices are widely used in criminal justice settings. Their promise remains largely unfulfilled, however, because assumptions and premises requisite to their development and application are routinely ignored and/or violated. This article provides a brief review of the most salient of these assumptions and…

The use of Bayesian decision theory to solve problems in test-based decision making is discussed. Four basic decision problems are distinguished: (1) selection; (2) mastery; (3) placement; and (4) classification, the situation where each treatment has its own criterion. Each type of decision can be identified as a specific configuration of one or…

According to Cronbach's method of data analysis--which decomposes individual scores into separate components for different levels of aggregation--data collected for an investigation of the development of individual differences in ability test scores from grade 4 through grade 9 were grouped into school district, class, and individual components.…

A series of Piagetian concrete operations period tasks dealing with classificatory concepts was administered to 280 children (40 subjects from each of seven levels--preschool, kindergarten, and first, second, third, fourth, and sixth grades). Significant main effects for age were found for all the tasks. Few significant sex differences were…

The volume consists of the proceedings of a meeting of consultants for a project on learning, retention, and transfer in military training. Topics discussed included the following: research strategy, computer-aided instruction, training for vigilance, decision making, pattern recognition, and learning, retention, and transfer of…