This study tested whether conditioning to one member of a compound stimulus can be blocked by presence of a second member to which the response was previously conditioned. Eight mentally retarded students (ages 7-9) were presented with words, sometimes accompanied by pictures. Six students performed best when words were presented without pictures.…

The study investigated the effectiveness of using visual cues to highlight the seams of baseballs, to improve the hitting of curveballs by five undergraduate varsity baseball team candidates. Results indicated that subjects hit a greater percentage of marked than unmarked balls. (Author/DB)

Data are summarized from 152 single-subject analyses of the reinforcing functions of self-injurious behavior (SIB) in individuals with developmental disabilities. Overall results indicated that functional analysis methodologies are extremely effective in identifying the environmental determinants of SIB on an individual basis and, subsequently, in…

Three adolescents with severe mental retardation were trained to request snacks from visible three-item snack sets. During subsequent stimulus control assessment sessions, one subject requested food items when no food items were present, two frequently requested a missing item when the two other items were visible, and all subjects requested…

Five young adults and three junior high students, with moderate mental retardation, were trained first to label characters verbally and then to enter the characters into computers, calculators, or checkbooks. Almost all subjects were able to generalize the use of verbal labels and key-entry skills across tasks and settings. (Author/JDD)

Results of a study with four autistic students (ages five-nine) showed that a picture training procedure was effective in teaching a generalized response to questions for which the relevant cue was visible, whereas specific generalization programing was required for situations in which the relevant cue was not visible. (Author/DB)

Three individuals with multiple severe disabilities were taught an appropriate response to problem behaviors, but the response was less efficient than the problem behavior on physical effort, schedule of reinforcement, or stimulus-reinforcer time delay. The response did not compete successfully with the problem behaviors until a new, more…