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A number of variables may influence the effectiveness and efficiency of skill acquisition. One variable that may be important is set size. The current study replicated and extended Kodak et al. (2020, "A Comparison of Stimulus Set Size on Tact Training for Children With Autism Spectrum Disorder," Journal of Applied Behavior Analysis, 53(1), 265-283) by evaluating the stimulus set size that led to the most efficient skill acquisition for 2 adolescents with autism spectrum disorder. More specifically, we evaluated tact acquisition in stimulus set sizes of 3, 6, and 12. The set sizes of 3 and 6 stimuli were associated with the most efficient acquisition, whereas the set size of 12 stimuli was not.The scientist-practitioner model necessitates embedding experimental designs within applied practice. This technical report describes a procedure for embedding a multiple-probe experimental design within the PEAK Relational Training System across all four PEAK modules. Baseline probes provide a direct test of target skills negatively endorsed within the PEAK assessment battery and can provide an estimate of skill acquisition in the absence of direct training. Temporal staggering of the probes maintains the fidelity of the experimental design and allows for the design to evolve along with learner skill acquisition. Achievement of mastery criteria demonstrates the efficacy of programming, and failure to achieve mastery can be remedied through programming adjustments that can be captured within the design. We additionally conducted a field test of the design with a child with disabilities, supporting the viability of this procedure within applied settings.Assessment-based instruction can increase the efficacy and efficiency of skill acquisition by using learner data to select an intervention procedure from a comparison of potential interventions. Although there are many published examples of assessments that guide the selection of skill-acquisition procedures, there are limited resources available to practitioners to guide the development of assessments for use in practice. This article describes a sequence of steps that Board Certified Behavior Analysts can follow to design and use assessment-based instruction in practice. These steps include (a) pick a topic to evaluate, (b) identify interventions to include in the assessment, (c) identify target behavior, (d) select an experimental design, (e) select a skill and targets, (f) equate noncritical procedures across conditions, (g) design templates for data collection, (h) conduct the assessment, and (i) use assessment results to guide practice. Included in these steps are examples and materials for how to conduct components of assessment-based instruction.A recent tutorial by Cummings and Saunders (Behavior Analysis in Practice, 12, 483-490, 2019) described methods to arrange match-to-sample tasks using PowerPoint on laptops with touch screens. Similar paradigms may be used on tablet-based systems such as the iPad. Because iPads may be commonly used by behavior-analytic practitioners, modifications to the procedures described by Cummings and Saunders (2019) may facilitate the successful use of these systems in treatment programs. Here we describe additional procedures and settings that may increase practitioners' success when using match-to-sample instructional arrangements on the iPad.There remains a gap in the current literature as to how to reliably measure and increase students' "voluntary reading," based on research suggesting a relation between reading amount and reading achievement. We tested the effect of the establishment of conditioned reinforcement for reading via a collaborative shared reading (CSR) conditioning procedure on eight 2nd-grade students with and without learning disabilities and developmental disorders. This conditioning procedure was composed of opportunities for reciprocal reading and collaboration on comprehension and vocabulary tasks related to the reading content, such that partners (teacher-participant or participant-participant) were required to work together. We utilized a combined small-n experimental-control simultaneous-treatment design with a single-case multiple-probe design nested within each small group in order to compare within- and between-group differences for participants in the CSR procedure with a teacher or peer. All participants for whom conditioned reinforcement for reading was established (n = 7) demonstrated gains in reading achievement after a maximum of nine sessions (412 min), with grade-level increases between 0.2 and 2.5 on measures of reading comprehension and between 0.3 and 3.1 on measures of vocabulary. The students in the teacher-yoked condition (n = 3) demonstrated more significant gains in their average increases in achievement, although the peer-yoked procedure was also effective and possibly more viable in a classroom setting. These results suggest that a CSR procedure with a teacher or peer should be considered as a means of increasing the reading achievement of early elementary students via increases in the reinforcement value of reading.Effective communication is a vital component of behavioral consultation. Behavioral consultants (e.g., behavior analysts, school psychologists) are responsible for drafting behavior intervention plans, delivering accessible training, and providing concise and consumable feedback to teachers. Their reliance on technological descriptions to communicate behavioral principles and procedures may yield poor social validity and hinder the consultant-teacher relationship. AZD1390 chemical structure In this study, we recruited 164 teachers through Amazon Mechanical Turk and administered a survey to (a) evaluate the social acceptability of technical and nontechnical language used in behavioral consultation across a variety of student populations and (b) gain information about teachers' experiences with behavioral consultation. Implications are discussed for training and the provision of behavioral consultation services.Transfer trials are a component of discrete-trial training in which the therapist re-presents the initial instruction following a prompted trial to provide an opportunity for the learner to answer independently. Transfer trials may expedite the transfer of stimulus control, are commonly used by practitioners and researchers, and are often recommended as best practice by applied behavior analysis organizations. However, there is little research comparing the efficiency and efficacy of transfer trials to more traditional teaching procedures. The current study evaluated and compared transfer trials to a nontransfer trial procedure for two-component tacting with three children diagnosed with an autism spectrum disorder. Results indicated both procedures were both effective and efficient for teaching two-component tacts for all learners, supporting the inclusion of transfer trials in discrete-trial training.