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Social and Behavioral Sciences Commons™
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Full-Text Articles in Social and Behavioral Sciences
An Attempt To Establish Approval As A Learned Reinforcer, Kelly T. Kohler
An Attempt To Establish Approval As A Learned Reinforcer, Kelly T. Kohler
Dissertations
Approval does not function as a powerful reinforcer for many children with autism, making it difficult to reinforce appropriate behavior in a functional and consistent manner. The current study first assessed the effects of establishing approval (“Nice,” accompanied by a smile and nod) and nonsense words as discriminative stimuli, with the intent that they might also become learned reinforcers. We conducted several experiments to assess the effectiveness of approval as a reinforcer, including tests on learning new responses (receptive, expressive, freeoperant, and simple simultaneous discriminations) and tests on the performance of previously mastered responses (receptive and expressive responses). Despite the …
The Use Of Response Interruption Redirection, Timeout, And Differential Reinforoement To Decrease Stereotypy, Jessica Korneder
The Use Of Response Interruption Redirection, Timeout, And Differential Reinforoement To Decrease Stereotypy, Jessica Korneder
Dissertations
Behaviors such as toe walking, hand flapping, nonfunctional vocalizations, and rocking are all examples of stereotypy. Stereotypy can occur at high rates in children with and without developmental delays (Smith & Van Houten, 1996). These behaviors can interfere with the acquisition of new skills (e.g., Dunlap, Dyer, & Koegel, 1983; Morrison & Rosales-Ruiz, 1997) and social interactions (Jones, Wint, & Ellis, 1990). The purpose of this study was to assess the effectiveness of response interruption and redirection (RIRD), time-out, and differential reinforcement of other behavior (DRO) in reducing vocal and motor stereotypy with children who engage in automatically reinforced high-rates …
The Neurobehavioral Consequences Of Gestational And Chronic Atrazine Exposure In Male And Female Sprague Dawley Rats, Jennifer L. Walters
The Neurobehavioral Consequences Of Gestational And Chronic Atrazine Exposure In Male And Female Sprague Dawley Rats, Jennifer L. Walters
Dissertations
The adverse health risks of exposure to the herbicide, atrazine, in humans are not fully understood. Although numerous studies have demonstrated atrazine to be an endocrine disrupter, the neurobehavioral consequences of atrazine exposure have not been thoroughly examined. The aim of this study was to investigate the effects of environmentally-relevant levels
of gestational followed by continued chronic atrazine exposure on motor function, learning and memory, anxiety, and striatal dopamine content in rodents. Pregnant Sprague Dawley rats were treated by gavage with 100 µg/kg atrazine (ATZ low), 10 me/kg atrazine (ATZ high), or vehicle on
gestational day l through postnatal day …