1. DeQuinzio JA, Taylor BA, Tomasi BJ. {{Observational learning and children with autism: discrimination training of known and unknown stimuli}}. {Journal of applied behavior analysis}. 2018.
We extended past observational learning research by incorporating stimuli already known to participants into training. We used a multiple-baseline design across three participants to determine the effects of discrimination training on the discrimination of consequences applied to modeled responses using both known and unknown pictures. During baseline, participants were exposed to modeled correct and incorrect picture labels and were observed to imitate modeled responses that were incorrect and followed by negative feedback. During discrimination training, we taught participants to label known pictures regardless of observed responses and consequences. With unknown pictures, we taught participants to imitate correct and reinforced modeled responses, and to say, « I don’t know, » when modeled responses were incorrect and received negative feedback. Test sessions measured responding to known and unknown pictures and showed acquisition over baseline levels. Generalization to pictures not associated with training was variable. Implications for teaching observational learning to children with autism are discussed.
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2. Schnell LK, Vladescu JC, Kodak T, Nottingham CL. {{Comparing procedures on the acquisition and generalization of tacts for children with autism spectrum disorder}}. {Journal of applied behavior analysis}. 2018.
Generalization is a critical outcome for individuals with autism spectrum disorder (ASD) who display new skills in a limited range of contexts. In the absence of proper planning, generalization may not be observed. The purpose of the current study was to directly compare serial to concurrent multiple exemplar training using total training time per exemplar, mean total training time, and exposures to mastery across three children diagnosed with ASD. Additionally, we assessed the efficiency of presenting secondary targets in the antecedent and consequence portions of learning trials and evaluated generalization to tacts not associated with direct teaching. Results suggested that all training conditions produced acquisition and generalization for trained and untrained exemplars. However, the serial multiple exemplar training condition was more efficient for two participants, whereas the instructive feedback condition was the most efficient for the third. Findings are discussed considering previous studies and areas for future research.
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3. Yu L, Zhu X. {{Effectiveness of a SCERTS Model-Based Intervention for Children with Autism Spectrum Disorder (ASD) in Hong Kong: A Pilot Study}}. {J Autism Dev Disord}. 2018.
A SCERTS model-based intervention with different durations (5-month vs. 10-month) was provided to 122 children with autism spectrum disorder (ASD) (age = 53.43 +/- 9.05 months) in Hong Kong. Before and after the intervention, the children were assessed with the Chinese Psychoeducational Profile-Third Edition (CPEP-3) and the Developmental Assessment Chart (DAC). Educators and parents expressed their views toward the intervention in focus groups. Results showed that participating children improved significantly in their social communication and emotional behavior after the intervention, as measured by DAC and CPEP-3. Likewise, educators and parents had positive views toward the intervention and noted the children’s improvement. The results suggest that a SCERTS model-based intervention can improve social communication, emotional regulation, and other skills in children with ASD.
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4. Cohenour JM, Volkert VM, Allen KD. {{An experimental demonstration of AAB renewal in children with autism spectrum disorder}}. {Journal of the experimental analysis of behavior}. 2018; 110(1): 63-73.
Operant renewal is a return of extinguished behavior due to changes in contextual stimuli that control the occurrence or nonoccurrence of a response. Well-established in classical conditioning and operant research, renewal presents itself in three forms-ABA, ABC, and AAB-and poses threats to treatment maintenance where extinction procedures are utilized. As AAB renewal may be less likely to occur than ABA or ABC renewal, the current study sought to determine if AAB renewal would occur with three participants with Autism Spectrum Disorder who were taught a simple lever pull response. Results showed that lever pulls increased for two of three participants when we introduced novel stimuli (i.e., a light and a buzzer) to alter the contextual environment after extinction. These findings suggest that AAB renewal may account for some instances of response recovery after extinction and that the procedure of this study may be beneficial to the further study of renewal and the variables that affect its occurrence within a translational model.
