The reliability of the time-sharing paradigm


The primary purpose of this study was to investigate the reliability of the time-sharing paradigm as a function of the age of the child and the concurrent speaking task employed. Subjects were 40 normal right-handed children, 10 at each of four age levels: 3, 5, 7, and 9. Each subject was presented with three concurrent speaking tasks, syllable repetition, sentence repetition, and story telling. There were control tapping and verbal conditions as well. The entire experimental procedure was administered two times within a 2-week interval. The principal finding of the study was that children were more likely to show the predicted asymmetry on the first administration of the paradigm than on the second one. The sentence repetition task was the one most likely to show the predicted asymmetry between hands, though children showed the most consistent performance on the syllable repetition task. Based on these findings, it was suggested that the time-sharing paradigm might not be particularly reliable in showing the predicted asymmetry in repeated administration of the same tasks with the same linguistic stimuli. © 1986.

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Brain and Language