Many studies have shown that (a) functional communication training (FCT) is effective for reducing problem behavior, and (b) multiple schedules can facilitate reinforcer schedule thinning during FCT. Most studies tha have used multiple schedules with FCT have included therapist-arranged stimuli (e.g.
View Article and Find Full Text PDFWe examined whether different durations of exposure to relevant establishing operations (EO) during treatment of problem behavior affected treatment efficacy and response bursting. In Study 1, we compared 2 functional communication training (FCT) interventions. In the first treatment, we used a card touch as the target mand; this was associated with limited exposure to the EO because we could physically guide the mand at prescribed times.
View Article and Find Full Text PDFWe examined relations between self-control responding and environmental variables with 3 children with behavior disorders. Differential delays were presented before or after task completion in a single-session reversal design. Delays presented before task completion produced more impulsive responding than those presented after task completion for all participants.
View Article and Find Full Text PDFPlant growth can be studied at different organizational levels, varying from cell, leaf, and shoot to the whole plant. The early growth of seedlings is important for the plant's establishment and its eventual success. Wheat (Triticum aestivum, genome AABBDD) seedlings exhibit a low early growth rate or early vigor.
View Article and Find Full Text PDFBackground And Aims: Rapid leaf area expansion is a desirable trait in the early growth stages of cereal crops grown in low-rainfall areas. In this study, the traits associated with inherent variation in early leaf area expansion rates have been investigated in two wheat species (Triticum aestivum and T. durum) and three of its wild relatives (Aegilops umbellulata, A.
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