THE BEHAVIOR MODIFICATION METHODS CURRENTLY BEING USED INCLUDE PROCEDURES SUITABLE FOR USE IN THE CLINIC, SUCH AS DESENSITIZATION, AND IN THE MENTAL INSTITUTION, SUCH AS THE TOKEN ECONOMY. THE PROCEDURES CAN BE USED WITH NORMAL ADULTS AND CHILDREN, AND WITH THE MENTALLY DISADVANTAGED, INCLUDING THE RETARDED, THE SENILE, AND THE PSYCHOTIC. BEHAVIOR MODIFICATION METHODS HAVE BEEN USED TO AMELIORATE A WIDE RANGE OF PROBLEMS, INCLUDING MUTISM, SELF-DESTRUCTIVE BEHAVIOR, INAPPROPRATE FEARS, AND NERVOUS HABITS. ALSO, BEHAVIOR MODIFICATION METHODS HAVE BEEN USED TO TEACH A GREAT VARIETY OF APPROPRIATE, NORMAL BEHAVIORS, INCLUDING NORMAL SPEECH, APPROPRIATE SOCIAL BEHAVIOR, AND SUITABLE CLASSROOM SKILLS.(AUTHOR ABSTRACT)....BDS