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Modified Constant Prompt-Delay

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Using a Modified Constant Prompt-Delay Procedure to Teach Spelling to Students with Physical Disabilities

Summary of the Research Study
The purpose of this study was to evaluate the use of a constant time delay (CTD) procedure to teach spelling to students with physical disabilities who had mild to typical levels of intellectual functioning. The researchers hypothesized that modifying the CTD procedure by using several different intervals such as adding two additional seconds to the prompt delay can accommodate the individuals who have physical disabilities that may interfere with the ability to respond quickly. The researchers chose spelling as a target task because their students use augmentative communication devices to write messages. …show more content…

All the participants in this study attended a self-contained program for students with orthopedic impairments in an elementary school and were included in a general education class for parts of the school day. All participants functioned below grade level in spelling performance and had additional disabilities. Two of the participants had prior experience with CTD from some areas of instruction but not for spelling. Using a multiple baseline design collected accurate and reliable data. The teacher was the primary data collector and conducted all sessions. Data was collected on independent and prompted responses. Data was also collected on incorrect responses, which consisted of multiple types of errors: non-waiting, waiting, incomplete-response, and duration-interval errors. Throughout 50% of all the sessions, a second classroom paraprofessional collected data on treatment integrity and on student responses. Across all sessions, treatment integrity ranged from 98.2% to 100%, with a mean of 99.7%. In this study the IOA was calculated for each session by comparing the number of correct and incorrect student responses that were recorded separately by the teacher and the paraprofessional on a trial-by-trial basis. An agreement was defined as the two observers recording the same number od independent, prompted, and incorrect responses in a given trial. During all sessions, agreement was …show more content…

She displayed a grade equivalence of 2:5 for spelling on the Wechsler Individual Achievement Test and her Stanford-Binet IQ indicated that she was functioning in a normal range if intelligence. Juana was a 10-year old fourth grade student who had myelomeningocele spina bifida and clear speech articulation. She had a spelling grade equivalent of 2:3 on the WIAT and her IQ scores were unavailable. Autumn was a 12-year-old fifth grade student who had spastic quadriplegic cerebral palsy with mildly dysarthic speech. Her spelling ability was a 1:1 grade equivalent in the WIAT, and she was functioning in the mild range of mental retardation.
In this study, all session were carried out in the classroom where each of the 3 participants attended school. The credibility of this study can be certain due to the collection of generalization data of the 3 participants used in this study. Lexie’s, Juana’s, and Autumn’s independent responding was maintained at 100% across all three word sets that was conducted 23 days later.

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