Citation: Pc. Duker et J. Sigafoos, THE MOTIVATION ASSESSMENT SCALE - RELIABILITY AND CONSTRUCT-VALIDITY ACROSS 3 TOPOGRAPHIES OF BEHAVIOR, Research in developmental disabilities, 19(2), 1998, pp. 131-141
Citation: Pc. Duker et al., ESTABLISHING A RECEPTIVE REPERTOIRE OF COMMUNICATIVE GESTURES WITH INDIVIDUALS WHO ARE PROFOUNDLY MENTALLY-RETARDED, Education and training in mental retardation and developmental disabilities, 32(4), 1997, pp. 357-361
Citation: Pc. Duker et W. Jutten, ESTABLISHING GESTURAL YES-NO RESPONDING WITH INDIVIDUALS WITH PROFOUND MENTAL-RETARDATION, Education and training in mental retardation and developmental disabilities, 32(1), 1997, pp. 59-67
Citation: R. Didden et al., METAANALYTIC STUDY ON TREATMENT EFFECTIVENESS FOR PROBLEM BEHAVIORS WITH INDIVIDUALS WHO HAVE MENTAL-RETARDATION, American journal of mental retardation, 101(4), 1997, pp. 387-399
Citation: Pc. Duker et Dm. Seys, AN INVENTORY METHOD FOR ASSESSING THE DEGREE OF RESTRAINT IMPOSED BY OTHERS, Journal of behavior therapy and experimental psychiatry, 28(2), 1997, pp. 113-121
Citation: Pc. Duker et M. Schaapveld, INCREASING ON-TASK BEHAVIOR THROUGH INTERRUPTION-PROMPTING, JIDR. Journal of intellectual disability research, 40, 1996, pp. 291-297
Citation: Pc. Duker et Dm. Seys, LONG-TERM USE OF ELECTRICAL AVERSION TREATMENT WITH SELF-INJURIOUS-BEHAVIOR, Research in developmental disabilities, 17(4), 1996, pp. 293-301
Citation: Pc. Duker et al., EFFECTIVENESS OF DELAYED FEEDBACK ON THE ACCURACY OF TEACHING COMMUNICATIVE GESTURES TO INDIVIDUALS WITH SEVERE MENTAL-RETARDATION, Research in developmental disabilities, 16(6), 1995, pp. 479-488
Citation: Pc. Duker et al., THE EFFECT OF RESPONSE DELAY ON CORRECT RESPONDING TO INSTRUCTIONS DURING COMMUNICATIVE GESTURE TRAINING, Education and training in mental retardation, 28(4), 1993, pp. 327-332
Citation: Pc. Duker et M. Nielen, THE USE OF NEGATIVE PRACTICE FOR THE CONTROL OF PICA BEHAVIOR, Journal of behavior therapy and experimental psychiatry, 24(3), 1993, pp. 249-253
Citation: Ej. Rasing et Pc. Duker, ACQUISITION AND GENERALIZATION OF SOCIAL BEHAVIORS IN LANGUAGE-DISABLED DEAF-CHILDREN, American annals of the deaf, 138(4), 1993, pp. 362-369