Even when raters demonstrate agreement in the use of a measure, limited score variability or violation of often-ignored statistical assumptions can result in lower reliability estimates than intuitively expected. This article uses data drawn from two randomized controlled trials of schema therapy and cognitive behavioral therapy for the treatment…

Five adults with Prader-Willi syndrome (characterized by short stature, learning difficulties, incomplete sexual development, and uncontrollable eating) learned the conditional relations necessary for the formation of two equivalence classes under differential/nondifferential and edible/nonedible outcomes. Performance on test trials was better…

This study of 15 children with feeding disorders investigated identification of effective behavioral reinforcers by comparing outcomes and time requirements of two procedures in which presence in a particular area produced access to a preferred stimulus (i.e., zone discrimination). Both procedures were viable reinforcer identification tools, but…

The effects of two methods of negative reinforcement on three young children (ages two and three) with developmental delays and chronic food refusal were examined. Physically guiding the child to accept food contingent on noncompliance and nonremoval of the spoon until the child ate were tested. Both treatments were effective; however, parents…