THE OUTCOMES OF THE 1960 NATIONAL SCIENCE FOUNDATION-SPONSORED SUMMER SCIENCE TRAINING PROGRAMS (SSTP) FOR SECONDARY SCHOOL STUDENTS ARE EXAMINED THROUGH A DETERMINATION OF PARTICIPANTS' CHARACTERISTICS BEFORE, AND THEIR ACTIVITIES AFTER, PARTICIPATION IN THE PROGRAMS. THIS ANALYSIS PROVIDED A MEANS OF COMPARING PROGRAMS IN TERMS OF THE TYPES OF STUDENTS ATTRACTED AND THE INFLUENCES THESE PROGRAMS HAD ON THE PARTICIPANTS. DATA WERE OBTAINED FROM QUESTIONNAIRES COMPLETED BY 5,500 PERSONS. TWELVE FACTORS EMERGED FROM AN INTERCORRELATION OF THE 57 ITEMS TO BE FURTHER ANALYZED FOR INTERPRETATION. THESE FACTORS WERE RELATED TO SCIENCE CAREER AMBITIONS, PARTICIPATION IN SCIENCE ACTIVITIES AND PROGRAMS, CORRELATION BETWEEN THE GOALS OF THE SSTP PARTICIPANTS AND THOSE OF THE SSTP, AND EFFECT OF SSTP PARTICIPATION ON STUDENT INTEREST IN SUBSEQUENT SCIENCE COURSES. RESULTS INDICATE DIFFERENCES IN SSTP'S AS REFLECTED BY RESPONSES OF PARTICIPANTS, BUT WHETHER PARTICIPANTS ATTRACTED TO SSTP'S DIFFER OR ARE DIFFERENTIALLY AFFECTED BY THE SSTP'S IS NOT CLEAR. THIS DOCUMENT IS PUBLISHED IN PSYCHOLOGICAL REPORTS, VOLUME 18, NO. 1, FEBRUARY 1966. (AG)