Sixteen papers concerned with vocational habilitation of the severely and profoundly retarded are organized into three parts: issues in habilitation, stimulus control of vocational behavior, and instrumentation for program evaluation. Papers have the following titles and authors: "Structured Employment: Productivity and Productive Capacity" (R. Horner, G. Bellamy); "A Strategy for Programming Vocational Skills for Severely Handicapped Youth" (G. Bellamy, et al.); "Summer Jobs for Vocational Preparation of Moderately and Severely Retarded Adolescents" (J. Clarke, et al.); "Information Processing for Habilitation" (S. Boles, J. Boomer); "Stimulus Control Within Operant Chains: Variables Affecting the Vocational Performance of a Severely Retarded Woman" (R. Horner, G. Bellamy); "The Effect of Reinforcement Schedules on the Intra-Chain Response Patterns of Three Severely Retarded Workers" (R. Horner, G. Bellamy); "Increasing the Productivity of a Profoundly Retarded Sheltered Workshop Employee" (B. Wuerch); "The Effect of Contingent Praise on the Work Rate of a Severely Retarded Adult" (N. Rumble, et al.); "Systematic Correction Procedures in Vocational-Skill Training of Severely Retarded Individuals" (D. Close, et al.); "The Effects of Immediate Correction on the Error Rate of One Severely Retarded Worker" (R. Horner, N. Prill); "The Intra-Chain Response Patterns of Three Severely Retarded Adults, During Extinction" (R. Horner, et al.); "Multiple Perspective Evaluation of an In-Service Program for Vocational Trainers of Severely Retarded Adults" (N. Weissman-Frisch, et al.); "A Telephone Technique for Assessing Living Environments and Life Styles of Retarded Adults" (N. Weissman-Frisch, et al.); "NOLE: The Naturalistic Observation of Severely Retarded Vocational Trainees in Non-Vocational Leisure Time Settings" (J. Boomer); "The Trainee Performance Sample: Improving Vocational Skill Assessment of Severely Retarded Adults" (L. Irvin, et al.); and "Multiple Assessment Evaluation of Programs for Severely Retarded Adults" (L. Irvin, et al.). (DB)