Sources of individual differences in the listening comprehension of speech presented at different rates were investigated by factor analyzing 11 variables, including measures of comprehension and field-independency. Twenty-two different tests, two for each variable, were administered to 50 college students. It was concluded that: (a) the cloze…

Two separate subject matter areas were selected for investigation which were felt to represent two distinct types of learning situations. One was a kind of logico-mathematical procedure; the other was a visual form discrimination task. Two separate courses were developed for each subject matter area. One reflected an inductive instructional…

The Objectively Scoreable Apperception Test (OAT) was administered to 725 naval aviation officer candidates during their first week of training to examine the potential of the test as a supplement to the primary selection system. Multiple correlations were first determined by using only the scores from existing primary selection variables; the…

This paper presents the causal comparative method, or ex post facto research design, as an alternative to classical experimental methods for establishing causal relationships between events and circumstances. A literature survey, conducted in an effort to define and describe the method is discussed. Following this is a presentation of the…

An equation was derived to determine the relationship between the pooled within-subgroup r (correlation coefficient) and the r obtained from the total group data. It was, thus, possible to assess the amount of distortion introduced by pooling heterogeneous subgroups. As a basis for deciding whether to pool two subgroups in order to calculate a…

The empirical relationships among about 90 reading objectives were examined. The objectives span late first-grade through the sixth-grade (nominally). The results of contingency analyses and correlational analyses are reported. The identification of learning hierachies is stressed. Such hierarchies are apparent in the early learning of reading…

The 2-year study evaluated the language performance of 69 hearing impaired, preschool children born following the rubella epidemic of the early 1960's in order to develop an instrument for objectively assessing language achievement and a predictive index of language achievement. Two language rating scales were developed which were tied to the…

Discussed is the theoretical and practical importance of the development of learning and transfer taxonomies with psychometric relevance and of the building of psychometric classificatory systems with implications for learning and instruction. Psychometric classifications of human performances most often are based on the covariation of individual…

A battery of 10 intelligence tests was administered to 22 subjects under standard conditions. After the testing session the degree of perceived similarity between 5 tests of the battery was to be estimated with regard to: (1) the kind of intellectual activity required by the tests, and (b) difficulty. Estimated qualitative similarity, according to…

An autocorrelation technique was used to determine the periodicity underlying successive recurrences of specific sleep states (Quiet Sleep and Active Sleep). Groups of short (2-3 hour) polygraphic records and individual all night recordings were analyzed. Active Sleep and Quiet Sleep periodicities at 32 weeks conceptional age were 12 minutes. At…

A set of mathematical consistencies that forms conditions of inequality in a theorem is summarized, and a strategy for its application with real data is presented. The theorem and strategy are suggested for immediate use by the practitioner seeking cause-effect relationships in a system of variables to cut down guess work and time in analysis and…

Forty-four counties in Florida and 23 in Oregon with 1966 populations of less than 50,000 were selected for a study of the adequacy of public health services in rural areas. The counties were ranked on the following need variables: number of children under 5 years, persons over 65 years, Negroes, and families with incomes under $3,000. The seven…

A developmental study was conducted to produce a computer-assisted instruction (CAI) program on the product-moment family of correlations. The first phase in the development was the definition of the requirements of the developmental process which serve as guidelines. In the design phase, the specific topics to be treated in the program were…

A factor rotation scheme is presented which has a property that is interesting for examining factor-structure hypotheses. Given several clusters of tests the orthogonal bounds scheme produces factors which contain these clusters in some optimal sense. (Author)

A new basic algorithm is discussed that may be used to do factor analysis by any of these three methods: (1) unweighted least squares, (2) generalized least squares, or (3) maximum likelihood. (CK)