THE PROCESSES OF EXPERIMENTAL PROGRAMING OF A FOREIGN LANGUAGE ARE EXAMINED ACCORDING TO THE PRINCIPLES OF OPERANT CONDITIONING, WHICH IS THE BASIS OF PROGRAMING TECHNIQUES. DISCUSSION OF FORMAL REPERTOIRES COVERS THE USE OF SUCH CONDITIONING METHODS AS DISCRIMINATION LEARNING AND TRANSFER, STIMULUS GENERALIZATION, RESPONSE GENERALIZATION, AND ECHOIC BEHAVIOR TO TEACH STUDENTS TO IMITATE, TRANSCRIBE, READ, AND TAKE DICTATION IN THE TARGET LANGUAGE. THEMATIC REPERTOIRES ARE DISCUSSED IN TERMS OF INTRAVERBAL RESPONSES, TACTS, AND MANDS. CHARTS ARE FOUND THROUGHOUT THE ARTICLE FOR CLARIFICATION OF MATERIAL. ALSO INCLUDED ARE A SUMMARY TABLE OF AVAILABLE LANGUAGE PROGRAMS AND A SIX-PAGE LIST OF REFERENCES. THIS ARTICLE APPEARED IN THE "INTERNATIONAL REVIEW OF APPLIED LINGUISTICS IN LANGUAGE TEACHING," VOLUME 2, NUMBER 4, NOVEMBER 1964, PAGES 249-301. (AF)