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 purposes of this study were to determine the perceptions of college and university presidents concerning the role of intercollegiate athletics in higher education, to identify the various similarities and differences regarding the role of intercollegiate athletics as perceived by college and university presidents, and to provide useful data for college administrators, faculty, and staff to utilize when implementing new programs of operation or when evaluating existing practices.

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 problem of this study was an investigation of some dimensions of leadership behavior of Texas school superintendents as perceived by themselves and as perceived by their staffs.

The primary purpose of this study was to investigate the change in self-concept, personality adjustment, and measurable intelligence of delinquent boys after a period of training received in the State Training School for Boys operated by the Texas Youth Council at Gatesville, Texas. Inherent in the study was an attempt to isolate factors which can be assumed to identify those individuals who might be more likely to profit from the training received.

The problem under consideration was a study of physical fitness and attitude utilizing two methods of teaching physical education in a metropolitan junior college.

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