We examined college students' procrastination when studying for weekly in-class quizzes. Two schedules of online practice quiz delivery were compared using a multiple baseline design. When online study material was made available noncontingently, students usually procrastinated. When access to additional study material was contingent on completing previous study material, studying was more evenly distributed. Overall, the mean gain in percentage correct scores on weekly in-class quizzes relative to pretests was greater during contingent access than during noncontingent access conditions.

We examined college students' participation in a game activity for studying course material on their subsequent quiz performance. Game conditions were alternated with another activity counterbalanced across two groups of students in a multielement design. Overall, the mean percentage correct on quizzes was higher during the game condition than in the no-game condition.

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We evaluated problem behavior exhibited by 6 individuals with developmental disabilities using the behavioral economic conceptualization of unit price. Descriptive observations were conducted during interactions between the participants and their primary care providers in a clinical laboratory, the participants' homes, or school. Data were recorded on potential reinforcers and problem behavior. After identifying reinforcers for each participant's problem behavior by way of functional analysis, the descriptive data were analyzed retrospectively, using the cost-benefit ratio described by the concept of unit price. Results showed that demand was elastic and produced monotonic response output curves. The results represent an extension of the concept of unit price to severe problem behavior under naturally occurring environmental conditions.

Introduction Avoidant/restrictive food intake disorder (ARFID) can occur in children with typical development and persist past childhood. This significantly impacts most areas of children's lives, but may become more evident in teenage years, especially socially. There is an empirically supported treatment for ARFID with 40 years of research backing, this being behaviour‐analytic feeding interventions. However, application to individuals over age 12 is lacking, and needs to be investigated for effectiveness. This is important as the addition of ARFID (formerly called feeding disorders) to the DSM‐V has seen an increase in new treatments for ARFID by attempting to apply eating disorder treatments to this population including children. More research is needed to identify if already established behavioural intervention procedures are effective for ARFID in individuals with selectivity, without disabilities, older ages, and in settings outside of intensive specialised feeding hospital admissions in the United States. Method A 13‐year‐old female with ARFID and years of failed treatment attempts participated in her home in Australia. We conducted multiple stimulus without replacement preference assessments and used a changing criterion design with multiple baseline probes. Treatment consisted of demand fading, choice, differential attention, and contingent access. We did not use cognitive or family based treatment. Results Consumption increased to 100%. Variety reached 61 foods across all food groups. She met 100% of goals and ate at a restaurant. Caregivers reported high satisfaction and social acceptability. Gains were maintained at 9 months. Conclusion This brief, behaviour‐analytic in‐home treatment was effective in increasing food group variety consumption.

Early childhood feeding problems can be challenging. Children who limit their food consumption may significantly impact multiple critical areas of development. Effective treatment should be accessed as early as possible but has been limited to a handful of US hospital programmes. Feeding problems affect both children with and without disability, and families may struggle with multiple children having feeding difficulties. We provided short-term (less than 2 weeks), in-home, intensive, behaviour-analytic feeding intervention to two children with typical development who were younger siblings of children already in the programme. We used a withdrawal/reversal design to assess the effects of nonremoval of the spoon, re-presentation, contingent and noncontingent access to tangibles, differential attention, and response cost. This multi-component intervention was effective in increasing the consumption of a wide variety of foods at regular texture and self-feeding for both participants. Variety was increased to over 60 foods from all food groups. Admission goals were met (100%). We trained caregivers to high procedural integrity and generalised the protocol. We provided actual plate picture examples of family meals consumed where the brothers and parents ate the same meal. Caregiver satisfaction and social acceptability were high. Gains were maintained at 3-year follow-up where parents reported problems were fully resolved.