Study measures the precision of auditory localization in 26- to 30-week-old infants using the adult minimum audible angle test. Results show that infants discriminate sound displacements of about 19 degrees, considerably less accurate than adult values of one to two degrees. (Author/RWB)

This article reviews the history, the use and the reasons for abandonment of the selective adaptation paradigm. The four experiments mentioned in the article show that selective adaptation produces strong reaction time effects, and that items in the adapted category are identified more slowly than unadapted items. (JAZ)

Investigation of the reinforcing properties of vestibular stimulation with five multiply disabled severely retarded young children indicated that vestibular stimulation (10 seconds of swinging) was reinforcing to all subjects and was preferred (over food, praise, visual, and auditory stimulation) by four of the five children. (Author/DB)

Exclusion of stimuli involved in complex stimulus relations was examined in a severely retarded young man. The study systematically replicated and extended research on exclusion performance of low-functioning mentally retarded individuals and provided additional data on relational learning in this population. (Author/CL)

Programs were designed to teach three severely retarded adolescents to use individual anagram letters to construct the appropriate color words when shown color patches. After learning visual equivalences between colors and printed words, Ss demonstrated auditory reading-comprehension (matching printed words to dictated words) and oral reading…

Results of a study involving control, learning disabled, and attention deficit disorder with hyperactivity (ADD-H) children (14 per group, aged 8-10 years) revealed that LD and ADD-H Ss habituated more rapidly, but they also encoded fewer aspects of the stimulus field than control Ss. (CL)

An expanded assessment model examining physiological conditions, durational events, and behavioral histories is suggested as one way to understand the stimulus events controlling aggression of developmentally disabled persons. Implications for more effective treatment are considered. (CL)

Habituation to single female faces and to single geometric patterns was observed separately in two groups of infants who participated in two sessions separated by 10 days. Habituation was found to be distributed into three patterns and showed moderate but significant reliability between assessment sessions. (Author/RH)

Response latencies of 27 learning disabled (LD) and 27 normal control boys (8-11 years old) were compared on a picture-word interference task. Both LD and control Ss exhibited greater interference effects (longer response latencies) when naming pictures (versus naming words) and when categorizing words (versus categorizing pictures). (Author/CL)

Results of a study involving 60 autistic children (three-16 years old) showed that equivalence training was more effective than functional object-use in improving posttest scores on visual overselectivity. (Author/CL)

Two experiments involving six profoundly retarded Ss (3-18 years old) evaluated a formal method for identifying reinforcers. Results revealed that preferred stimulus conditions typically produced higher rates of responding than did either baseline or nonpreferred stimulus conditions, suggesting that the procedure can assess reinforcer value for Ss…

The authors suggest that line graphs that average response frequency over long periods obscure the major rate changes that indicate sources of behavioral control. A scatter plot can make patterns of responding identifiable and, in turn, suggest environmental features that occasion undesirable behavior. Use of scatter diagrams is illustrated in…

Reports the measurement of response latencies and the recording of eye movements in a task in which children of approximately five-and-a-half years counted one to eight dots presented in different configurations. (Author/RH)

Bibliography of research on pictures and imagery is organized according to major sections of general-purpose taxonomy, i.e., theoretical approaches to picture perception; picture perception research; memory for pictures; concept learning, problem solving, and cognitive skills; learning from prose; affective picture responses; pictoral media design…

Results of three experiments suggest that groups of schizophrenic, younger normal, and older normal children used a serial information-processing strategy while performing on a partial report version of a span of apprehension task. Impairment of schizophrenic children on the partial report versions seemed to reflect inefficiencies in the…