This study examined some factors influencing college students' choice of field of study. A model of student choice of major focused on students' perceptions of labor market conditions, personality development, college campus experience of academic and social integration, and use of information available on campus was established. The issues examined were the significance of perceptions of market variables, the use and acquisition of information for choice of major, and the timing of choice decisions. A mail survey was conducted of college juniors and seniors attending a comprehensive research university; 573 students responded. The dependent variable was student choice of any of eight majors. The main independent variables were student perceptions of labor market variables such as salary, job opportunities, job advancement, and other variables. Other aspects investigated in relation to choice of major were effects of socioeconomic background, gender, and race; student intent to achieve the degree and continue for graduate studies; use of information in selecting the major; and timing of students' final decisions regarding majors. The study found that labor market perceptions combined with different personality orientations accounted for 77.5 percent of the total variance in student choice of majors. Nineteen tables containing details of factors analyzed are included. (Contains 7 figures and 36 references.) (CK)