Unrestricted Learning Opportunities for Trainees in Behavior Analysis: A Survey of Current Practices.

Individuals seeking certification as a board certified behavior analyst (BCBA) by the Behavior Analyst Certification Board (BACB) must meet certain eligibility requirements. In addition to passing the BCBA examination, such requirements include completion of a master's degree, behavior-analytic coursework, and supervised practical fieldwork. In accruing fieldwork hours, trainees must be provided with the opportunity to complete unrestricted activities. The BACB defines unrestricted activities as ". . . those that are most likely to be performed by a BCBA," and requires that 60% of fieldwork hours are comprised of these activities (BACB, 2022b). Fieldwork hours may be accrued across a number of different host sites (e.g., hospital units, schools, community locations), with each host site having different day-to-day responsibilities affecting how these opportunities are provided. Therefore, exploration of the provision of these opportunities and the barriers to providing these opportunities is warranted. The current study sought to determine the current practices involved in provision of opportunities to gain fieldwork experience hours towards BCBA certification; in particular, practices related to unrestricted fieldwork activities. Results indicate that, although unrestricted learning opportunities are often provided to trainees, contingencies present within the day-to-day operations of a clinical environment can be hampering. A discussion of the implications of these barriers and potential solutions are included.

Effects of pivotal response treatment on reciprocal vocal contingency in a randomized controlled trial of children with autism spectrum disorder.

LAY ABSTRACT: A recent randomized controlled trial found that children with autism spectrum disorder who received a pivotal response treatment package showed improved language and social communication skills following the intervention. The pivotal response treatment package includes clinician-delivered and parent-implemented strategies. Reciprocal vocal contingency is an automated measure of vocal reciprocity derived from daylong audio samples from the child's natural environment. It may provide stronger and complementary evidence of the effects of the pivotal response treatment package because it is at lower risk for detection bias than parent report and brief parent-child interaction measures. The current study compared reciprocal vocal contingency for 24 children with autism spectrum disorder in the pivotal response treatment package group and 24 children with autism spectrum disorder in the control group. The pivotal response treatment package group received 24 weeks of the pivotal response treatment package intervention. The control group received their usual intervention services during that time. The groups did not differ in reciprocal vocal contingency when the intervention started or after 12 weeks of intervention. However, after 24 weeks the pivotal response treatment package group had higher ranked reciprocal vocal contingency scores than the control group. These findings are consistent with results from parent report and parent-child interaction measures obtained during the trial. The participants in the pivotal response treatment package exhibited greater vocal responsiveness to adult vocal responses to their vocalizations than the control group. Findings support the effectiveness of the pivotal response treatment package on vocal reciprocity of children with autism spectrum disorder, which may be a pivotal skill for language development.

Children with Autism Spectrum Disorder May Learn from Caregiver Verb Input Better in Certain Engagement States.

The relation between caregiver follow-in utterances with verbs presented in different states of dyadic engagement and later child expressive verb vocabulary in children with autism spectrum disorder (ASD) was examined in 29 toddlers with ASD and their caregivers. Caregiver verb input in follow-in utterances presented during higher order supported joint engagement (HSJE) accounted for a significant, large amount of variance in later child verb vocabulary; R2= .26. This relation remained significant when controlling for early verb vocabulary or verb input in lower support engagement states. Other types of talk in follow-in utterances in HSJE did not correlate with later verb vocabulary. These findings are an important step towards identifying interactional contexts that facilitate verb learning in children with ASD.

The Relation Between Early Parent Verb Input and Later Expressive Verb Vocabulary in Children With Autism Spectrum Disorder.

Purpose The purpose of this study was to evaluate if higher quantity, diversity, and grammatical informativeness of verb phrases in parent follow-in utterances (i.e., utterances that mapped onto child attentional leads) were significantly related to later expressive verb vocabulary in children with autism spectrum disorder (ASD). Method We examined these associations in a sample of 31 toddlers with ASD and their parents in a longitudinal correlational study. Key aspects of parents' verb input were measured in 2 video-recorded 15-min parent-child free-play sessions. Child expressive verb vocabulary was measured using parent report. Results An aggregate variable composed of the quantity, diversity, and grammatical informativeness of parent verb input in follow-in utterances across the 2 parent-child sessions strongly and positively predicted later child expressive verb vocabulary, total R 2 = .25, even when early child expressive verb vocabulary was controlled, R 2 change = .17. Parent follow-in utterances without verbs were not significantly related to later child expressive verb vocabulary, R 2 = .001. Conclusions These correlational findings are initial steps toward developing a knowledge base for how strong verb vocabulary skills might be facilitated in children with ASD.

Using Shaping to Increase Foods Consumed by Children with Autism.

The current study used differential reinforcement and shaping to increase the variety of foods accepted by children with autism who demonstrated significant feeding inflexibility. Participants were introduced to four new food items via a hierarchical exposure, which involved systematically increasing the desired response with the food item. Level of food consumption was evaluated using a combined multiple baseline plus changing criterion design. Following intervention, all participants accepted all foods targeted, expanding upon the number of foods consumed.