This regression system is an intermediate result of a project to develop a comprehensive regression computer system as a foundation for a complete statistical man-machine interface. The outstanding features of the system can be condensed into two principal concepts. First, the program dynamically allocates core resulting in no limits on title…

The Student Orientations Survey (SOS) is a research inventory designed to assess students' expressed attitudes regarding curricular-instructional policies, their views on preferred modes of learning, student-faculty roles, etc. The SOS provides a means of profiling students' general orientations toward various philosophies, purposes, and processes…

A total of 51 mothers and their newborn infants were studied in order to evaluate the relationship between neonatal style and the early mother-infant relationship. The procedure included an infant assessment with the Brazelton Neonatal Assessment Scale, a mother-infant interaction observation during feeding, and an interview concerning maternal…

The study attempted to demonstrate significant relationships between systematically derived occupational descriptors and selected measures of worker characteristics in the affective domain. The predictor variables were derived from the Occupation Analysis Inventory (OAI) and consisted of work-dimension scores describing occupations in terms of…

Sixty subjects participated in an experiment involving estimation of difficulty of items in a test of reasoning ability. The estimates were to be given both according to conventional conditions of magnitude estimations with a preassigned comparison standard and according to a modified procedure of magnitude estimation where the comparison standard…

An investigation was made of influence in 77 academic departments of 11 community colleges in Maryland. The purposes of the investigation were to examine the relationship of perceived measures of influence to member attitudes of (a) policy agreement, (b) superior-subordinate relations, (c) peer relations; to examine the aslopes of the distribution…

Five-hundred dichotomously scored response patterns were generated with sequentially independent (SI) items and 500 with dependent (SD) items for each of thirty-six combinations of sampling parameters (i.e., three test lengths, three sample sizes, and four item difficulty distributions). KR-20, KR-21, and Split-Half (S-H) reliabilities were…

The validity of the Dale-Chall Readability ratings for sixth-grade science textbooks when compared to an independent criterion of language difficulty expressed in cloze units was examined. The Canadian Lorge-Thorndike IQ Test and the Canadian Test of Basic Skills, Vocabulary and Comprehension subtests, were administered to 366 sixth graders. Mean…

The accuracy of estimating test means for groups of twelfth-grade students by the item-sampling technique was examined. The subjects were from 35 twelfth-grade schools participating in the National Longitudinal Study of Mathematical Abilities. Half of the students in each school were assigned to a treatment condition where they took a complete…

This paper, a revision of the original document, "Correcting Partial, Multiple, and Canonical Correlations for Attenuation" (see TM 000 535), presents the formula for correcting coefficients of partial correlation for attenuation due to errors of measurement. In addition, the correction for attenuation formulas for multiple and cannonical…

Advocates of movie making believe that it provides a non-ethnocentric experience that is inherently engaging and relatively free from the risk of failure. Disadvantaged teenage boys who were attending two experimental summer work camps participated in studies of two aspects of movie making. The first study evaluated three different techniques for…

The correction for attenuation formulas for partial, multiple, and canonical correlation coefficients are discussed and the effects of measurement errors on these statistics are explored. The notation is standardized and the derivation extended where appropriate. It is shown that as the reliabilities of the predictors become more disparate, the…

In this paper problems caused by the existence of errors of measurement are identified for factor analysis, regression analysis, ANOVA, and ANCOVA. At least one detrimental effect is shown to exist for each type of analysis. When a researcher's interest is with infallible variables, he runs the risk of biased results from all of the procedures…

The problem of the comparability of change scores is investigated. Change quotients and residual change scores are evaluated as alternative approaches and methods for estimating the true change and true score residual, the reliability of change scores and residuals, and procedures for constructing confidence intervals for residuals are explored.…

The interpretation of test profiles, graphic devices which indicate the overall performance of an individual or group of individuals, is discussed. Some uses of profiles are presented, together with a three step profile analysis procedure for interpreting test results. Because profiles are relatively simple to construct and appear to be easily…