THIS STUDY WAS CONDUCTED TO DETERMINE IF A 2-WEEK WORKSHOP IN EXPERIMENTAL PSYCHOLOGY FOR HIGH SCHOOL TEACHERS WOULD SIGNIFICANTLY MODIFY THEIR TEACHING PRACTICES AND CONTENT EMPHASES. THE SPECIFIC HYPOTHESES CONCERNING HIGH SCHOOL TEACHERS OF PSYCHOLOGY COMPLETING A 2-WEEK WORKSHOP IN EXPERIMENTAL PSYCHOLOGY WERE THAT THE TEACHERS WILL (1) SIGNIFICANTLY MODIFY THE CONTENT OF THEIR COURSES IN THE DIRECTION OF EXPERIMENTAL RESEARCH ORIENTATION DURING THE FOLLOWING YEAR AND (2) INCLUDE MORE EXPERIMENTS, DEMONSTRATIONS, AND FILMS THAT WILL EMPHASIZE PSYCHOLOGY AS A LABORATORY SCIENCE. THE HYPOTHESES WERE TESTED USING A SINGLE GROUP OF EIGHT EXPERIENCED PSYCHOLOGY TEACHERS IN A PRE- AND POST-TEST DESIGN. AN INVENTORY OF TEACHING METHODS AND COURSE CONTENT EMPHASES WAS EMPLOYED TO DETERMINE THE NATURE OF THE COURSES TAUGHT IN THE ACADEMIC YEAR PRECEDING THE WORKSHOP AND THE ACADEMIC YEAR FOLLOWING THE WORKSHOP. THE WORKSHOP ACTIVITIES INCLUDED THE PREPARATION OF DEMONSTRATIONS AND EXPERIMENTS APPROPRIATE FOR HIGH SCHOOL STUDENTS, VIEWING INSTRUCTIONAL FILMS, AND GROUP DISCUSSIONS OF COURSE ORGANIZATION, AND THE NATURE OF SCIENCE. SIGNIFICANT DIFFERENCES WERE OBTAINED FOR BOTH HYPOTHESES. THERE WAS SIGNIFICANTLY MORE EMPHASIS ON PSYCHOLOGY AS A SCIENCE, THE HUMAN ORGANISM, AND LEARNING. SIGNIFICANTLY LESS EMPHASIS WAS GIVEN TO THE TOPIC OF ADJUSTMENT AND MENTAL HEALTH. TEACHING PRACTICES WERE MODIFIED TO INCLUDE SIGNIFICANTLY MORE LABORATORY DEMONSTRATIONS, EXPERIMENTS, AUDIOVISUAL AIDS, AND REFERENCE MATERIALS. (TC)