While various studies have related susceptibility to the Mueller-Lyer illusion to mental health, to developmental maturity, and to self-differentiation, there have been no studies in which susceptibility to the illusion has been related to a wide spectrum of self-concept dimensions. It is one of the purposes of the present study to analyze susceptibility to the Mueller-Lyer illusion as a function of errors in self-perception. To the extent that an individual suffers conflicts with regard to his self-concept, in any of its significant dimensions, it is expected that he will suffer a greater susceptibility to the illusion.

The problem of this study was to determine the value of certain selected aptitude test scores for predicting student achievement in Spanish, French, and German at North Texas State University. Particular emphasis was placed on freshmen enrolled in beginning courses.

The present study was made to determine the relationship between the level of teaching effectiveness of beginning elementary teachers and three individual characteristics of prospective teachers. A secondary purpose was an attempt to improve the service rendered by the School of Education at North Texas State College, Denton, Texas, in the selection and guidance of students who indicate a desire to enter the program for preparing elementary teachers.

The design of this experiment was developed to investigate the presence of success-striving and failure-avoidant motivational patterns in the level of aspiration behavior of retarded subjects. The primary objective of this study is to show that success-strivers are present in mentally retarded groups, even if in the minority.

The problem of this study concerned the difference in relationships between major teaching behaving styles and dominant personality interests expressed in values.

The present study is an effort to investigate some of the pertinent implications, principles, and postulates revealed by learning theorists, specifically McCandless, using mentally retarded children as subjects.

The purpose of the present study is fourfold: (1) to investigate the predicted relationships between self-acceptance and acceptance of others, (2) to investigate self-acceptance, acceptance of others, and their interrelationship with acceptance by others, (3) to investigate the patterns of interrelationship between self-acceptance, acceptance of others, actual acceptability to others, and predicted acceptability to others, and (4) to investigate an hypothesized curvilinear relationship between self-acceptance and acceptance of others.

This study has as its objectives: (1) the determination of the degree of relationship between achievement in the study of English as measured by a standardized English achievement test and achievement in the study of foreign languages as measured by teacher's grades; (2) the determination of the amount of contribution to such a relationship of the achievement in various functional areas in the study of English as measured by the subtests of the English achievement test.

Previous studies on correlations dealing with level of aspiration have been few and inconclusive. The problem of the present study was to examine the degree of relationship between an individual's level of aspiration and other personality variables as measured by standardized tests.

The present study was designed to investigate whether or not retardates' level of aspiration and subsequent performance are significantly affected by the presence and observation of a peer group.

The basic purpose of the study was to investigate the relationship of secondary school student teachers' manifest psychological needs and the accuracy of interpersonal perception and the self-concepts of students. In seeking a solution to the problem, the following subproblems were investigated: 1. The relationship of student teacher manifest psychological needs and the accuracy with which the student teacher perceived the attitudes of his students. 2. The relationship of the accuracy with which the student teacher perceived the attitudes of his students and the favorability of the students' attitudes toward the student teacher.

The purpose of this study was to determine attitude and attitude change toward,student teaching as expressed by students who were pursuing certification to teach speech and/or drama courses in the public school at the secondary level.

This was a study of the relationship of situational anxiety to vocal solo performances of college freshmen voice students.