Longley proposed a set of data for use in testing regression programs. This paper shows that the numerically accurate solution is likely to be an unreasonable estimate of the regression coefficients for this problem. This is true because the accuracy of the data and appropriateness of the model may affect the solution more than the computational…

This project studied pupil creativity in terms of the interdependence of the affective and cognitive domains. The relationships of the two facets were studied over the period of a full school year with 945 fifth grade pupils from a small urban district. Over the period of the study, growth was apparent in both domains. Parallel testings of the two…

The Airman Training Line Simulator was designed as a managerial aid for investigating and evaluating the various and diverse policy interaction which impact on basic military training and entry-level technical training courses. The user's manual provides user-oriented documentation on the concepts and logic underlying the model. The presentation…

A study was conducted by Los Angeles City College to determine whether the early registration of spring 1972 was primarily responsible for the inflated enrollment figures for fall 1972 classes. A tabulation by course and department was provided by the college Data Center of the number of enrollments at the close of registration, at the close of…

In this methodological paper two indices are developed: a complexity index and an interpretation index. The complexity index is a positive number indicating on the average how many factors are used to explain each variable in a factor solution. The interpretation index will be positive ranging from zero to unity; unity representing a perfect…

Comparisons of majority and minority group regression lines for purposes of assessing test bias may, under certain conditions, be viewed as comparisons of conditional bivariate distributions. Where these conditions hold, findings should reveal parallel regression lines except for a special case. Given the conditions described, one implication is…

In a manner similar to that used in the orthogonal case, formulas for the asymptotic standard errors of analytically rotated oblique factor loading estimates are obtained. This is done by finding expressions for the partial derivatives of an oblique rotation algorithm and using previously derived results for unrotated loadings. These include the…

A series of eleven concepts, eight of which were presented in a teacher training course, were rated by 252 undergraduate education majors on 15 semantic differential scales at the beginning and end of the course in an attempt to assess changes in the factor structure of semantic space and changes in the connotative meanings of the concepts. Scales…

Variance reduction analysis is a simple method for determining the effect of inequality of cell size on analysis of variance calculations. The suggested procedure has three steps. (Author/CK)

An investigation of techniques used to maximize response rates was the purpose of this study. Variables included perceived threat of questionnaire, questionnaire length, cover letter approach, follow-up correspondence, stamped/unstamped return envelope, and anonymity. The sample comprised 4,608 college faculty. Three analyses of response rates…

The stability of various item discrimination indices when a particular item assumes membership within different sets of items was investigated. Results suggest that when item discrimination is used as a significant factor in determing which items from several forms will be selected for inclusion in a test, the actual items selected are less a…

The progress of adult literacy in United Nations member states from 1969 to 1971 is the subject of this report. Based largely upon replies to a questionnaire sent to governmental and nongovernmental groups, the report describes trends in literacy development using selected programs as examples. Problems to be overcome if reduction of illiteracy is…

The relation between type of label and perception of faces was assessed. Sixty-four second and sixth grade Ss were randomly assigned to four experimental conditions in which various kinds of labeling training were associated with four purple and green smiling and frowning faces. Ss then judged the similarity of pairs of the faces. Results revealed…

The report very briefly summarizes the research performed during the contract period March 1, 1964, to February 28, 1971. The emphasis of the research was on the discovery and development of techniques for automatically indexing and classifying documents. The research was limited to statistical techniques rather than semantic or syntactic. A…

The solvent and chemical properties of liquid ammonia are presented. In a certain sense, ammonia is a more versatile solvent than is water because of its ability to solubilize, without reaction, highly negative or reducing species. (Author/BB)