Questionnaire responses of 457 students and 602 tutors were used to investigate conceptions of a "good tutor." In each case, factor analysis identified scales that reflected key constructs; cluster analysis identified subgroups with different patterns of scale scores; and discriminant analysis determined the scales that contributed the…

Recurrent problems in medical teaching clinic are common and difficult to address because of complex interpersonal dynamics. To minimize this difficulty, we developed a conceptual model that simplifies problems and identifies the root cause of tension between groups in clinic. We used recursive analysis and modeling of the data from a larger…

Purpose: This study's main purpose was to (a) identify acoustic signatures of hypokinetic dysarthria (HKD) that are robust to phonetic variation in conversational speech and (b) determine specific characteristics of the variability associated with HKD. Method: Twenty healthy control (HC) participants and 20 participants with HKD associated with…

This paper focuses on three aspects related to the conceptualization and application of canonical correlation analysis as a dominant statistical model: (1) partial canonical correlation analysis and its application in statistical testing; (2) the relation between canonical correlation analysis and discriminant analysis; and (3) the relation…

The use of Procrustean rotation as a procedure for assessing the invariance of study results is proposed. Researchers have long relied on significance testing as a measure of judging the worthiness of empirical findings. However, significance testing has come under fire because it does not provide information about the importance or replicability…

This paper describes the methods and techniques called Conceptual Analysis (CA), a rigorous procedure to generate (without involuntary omissions and repetitions) knowledge bases for the development of knowledge-based systems. An introduction is given of CA and how it can be used to produce knowledge bases. A discussion is presented on what is…

Each of the four classic multivariate analysis of variance (MANOVA) tests of statistical significance may lead a researcher to different decisions as to whether a null hypothesis should be rejected: (1) Wilks' lambda; (2) Lawley-Hotelling trace criterion; (3) Roy's greatest characteristic root criterion; and (4) Pillai's trace criterion. These…

To examine how media content is influenced by journalists' role concepts and organizational characteristics, a study used data which was originally gathered from telephone interviews with 1,001 American journalists conducted between December 1982 and February 1983, and which served as the basis for "The American Journalist: A Portrait of U.S.…

In an analysis of multitrait-multimethod matrices the criteria for discriminant validity are shown to include a "structure" criterion as an invariance of traits structure to methods. The criterion is meant to fit data to an additive model with traits and methods but not interaction terms. The importance of the structure criterion and the…

Discriminant analysis of Holland's Self Directed Search and Vocational Preference Inventory significantly improved the predictive validity of his classification scheme, over the traditional method of assigning high point codes. These results were obtained with both an initial and a replication sample of undergraduates pursuing various degrees. The…

LIVING-LEARNING RESIDENCE HALLS WHICH INCLUDE CLASSROOMS, RECREATION FACILITIES, AND FACULTY OFFICES ALONG WITH THE DORMITORY ROOMS WERE COMPARED TO THE MORE CONVENTIONAL RESIDENCE HALLS. IT WAS EXPECTED THAT THE LIVING-LEARNING HALLS FOSTERED A MORE INTELLECTUAL AND COHESIVE ATMOSPHERE. UNDERGRADUATES IN A LARGE UNIVERSITY WHO RESIDED IN ONE OF…

A discriminant analysis of the relationships between 335 Florida students' first and second grade scores on the reading subtests of the Metropolitan Achievement Test (MAT) and their third grade scores on the Florida Statewide Assessment Test (FSAT) was undertaken, using race, sex, and intelligence as independent variables. Three null hypotheses…

This presentation uses data from a long-term juvenile diversion counseling program to illustrate a sample method of estimating program cost. Several problems in using average cost figures are first presented. Then a method is described in which discriminant analysis can be used to refine cost comparisons. This makes it possible to produce…

Starting with the premise that the construct-oriented approach is the only viable approach to personality assessment, this paper considers five propositions. First, a prerequisite to generalizable and valid psychometric measurement of personality rests on the choice of broad-based constructs with systematic univocal definitions. Next, measures…