Effects of a Lag 1 reinforcement schedule on appropriate and varied responding to the social question, "What do you like to do?" and effects of the proportion of preferred stimuli present during training on the amount of varied responding in each session were investigated with students with autism. An ABAB reversal design and a multielement design…

To examine the effects on concurrent performance of independent manipulations of response-unit duration and number, 6 hens were exposed to concurrent second- order schedules of reinforcement. Each first-order operant unit required completion of a fixed-ratio schedule within the time specified by a fixed- interval schedule, with one further…

Contingencies of reinforcement specify how reinforcers are earned and how they are obtained. Ratio contingencies specify the number of responses that earn a reinforcer, and the response satisfying the ratio requirement obtains the earned reinforcer. Simple interval schedules specify that a certain time earns a reinforcer, which is obtained by the…

Herrnstein's hyperbola describes the relation between response rate and reinforcer rate on variable-interval (VI) schedules. According to Herrnstein's (1970) interpretation, the parameter "r[subscript e]"represents the reinforcer rate extraneous to the alternative to which the equation is fitted (the target alternative). The hyperbola is based on…

We examined the impact of using an animated software program (Team Up With Timo) on the expressive and receptive language abilities of five children ages 5-9 in a self-contained Learning and Language Disabilities class. We chose to use Team Up With Timo (Animated Speech Corporation) because it allows the teacher to personalize the animation for…

The development of language and literacy is the foundation for all other learning. This statement is the guiding philosophy at the Iowa School for the Deaf (ISD). Teachers at ISD believe that intensive, highly structured early intervention and education work best to support cognitive and communication development in their students. However, little…

We combined eye-tracking technology with a test of facial affect recognition and a measure of self-reported social anxiety in order to explore the aetiology of social-perceptual deficits in Asperger's syndrome (AS). Compared to controls matched for age, IQ and visual-perceptual ability, we found a group of AS adults was impaired in their…

As certain areas of practice in higher education shift online, the work of learners and teachers increasingly takes place within the domain of the image. The "digital turn" we are experiencing, both in higher education and in the wider culture, accompanies an "iconic turn" in which the logic of the image as it emerges on our screens has a growing…

By definition children with autism spectrum disorders (ASD) experience difficulty understanding and using language. Accordingly, visual and picture-based strategies such as the Picture Exchange Communication System (PECS) show promise in ameliorating speech and language deficits. This study reports the results of a multiple baseline across…

The present study examines the development of sight word reading in young children by examining changes in their self-reported reading strategies over time. A sample of 65 five to seven year olds were asked to read 40 real word items, all carefully matched for letter length and word frequency, on three separate occasions. Changes in the children's…

Problem behavior is a major barrier to successful community integration for people with developmental disabilities. Recently, there has been increased interest in identifying contextual factors involving setting events and discriminative stimuli that impact the display of problem behavior. The authors previously developed the "Contextual…

Although communication and social difficulties in autism have received a great deal of research attention, the other key diagnostic feature, extreme repetitive behaviour and unusual narrow interests, has been addressed less often. Also known as "resistance to change" this may be related to atypical processing of infrequent, novel stimuli. This can…

Due to the rapid advancements in mobile communication and wireless technologies, many researchers and educators have started to believe that these emerging technologies can be leveraged to support formal and informal learning opportunities. Mobile language learning can be effectively implemented by delivering learning content through mobile…

The study of human performance on discrete optimization problems has a considerable history that spans various disciplines. The two most widely studied problems are the Euclidean traveling salesperson problem and the quadratic assignment problem. The purpose of this paper is to outline a program of study for the measurement of human performance on…

This study is a replication of Sundberg and Sundberg (1990) that compared topography-based verbal behavior with selection-based verbal behavior in terms of acquisition, accuracy, and testing for the emergence of a new verbal relation. Participants were three typical children and three developmentally disabled persons with autism. The study sought…