THE RESEARCH REPORTED WAS DONE TO FIND IN WHAT DIRECTIONS NEW STUDY SPACE CONSTRUCTION MIGHT PROFITABLY VENTURE. NEARLY 100 STUDENTS OF EACH OF THE NEIGHBORING FOUR INSTITUTIONS WERE SAMPLED. THREE MAJOR TYPES OF EVIDENCE WERE SOUGHT AND USED--(1) EACH STUDENT KEPT A DIARY OF HIS STUDYING FOR A CONSECUTIVE PERIOD OF FOUR DAYS ON FORMS FURNISHED, (2) STUDENTS ALSO COMMENTED ON THE PLACES IN WHICH THEY STUDIED ADDING SUGGESTIONS, AND (3) FILLED IN AN OPINIONNAIRE JUDGING 95 DESCRIBED STUDY CONDITIONS. A RECORD OF 8,375 HOURS OF STUDY WAS TAKEN. RESULTS SHOWED THAT USE AND APPROVAL OF STUDY SPACE VARIED INVERSELY WITH SIZE. TWELVE PERCENT OF ALL STUDYING TOOK PLACE IN THE LARGE LIBRARY READING ROOMS AND FIFTY-SIX PERCENT OCCURED IN THE TWO SMALLEST PLACES--DORMITORY ROOMS AND CARRELS. THE MOST FREQUENTLY USED STUDY SPACE WAS ALSO THE ONE WITH THE MOST VARIETY OF USES--DORMITORY ROOMS. FORTY-EIGHT PERCENT OF ALL THE STUDYING REPORTED TOOK PLACE THERE. LIGHTING, HEATING, VENTILATION, PRIVACY AND GENERAL PERSONAL COMFORT COULD BE CONTROLLED. DORMITORIES VARY IN THE AMOUNT OF STUDYING DONE IN THEM WITH REGARD TO DISTANCE FROM THE LIBRARY AND CLASSROOMS, CONSTRUCTION AND GROUP BEHAVIOR. EMPTY CLASSROOMS COULD SERVE AS STUDY AREAS IF DESIGNED FOR FLEXIBILITY. FURNITURE SHOULD BE PURCHASED IN RATIOS TO FIT THE PROPORTIONS OF NOT ONLY THE AVERAGE. THE CRITERIA OF GOOD STUDY CONDITIONS SHOULD BE USED WHEN PLANNING STUDY SPACE. (RK)