Mary Jo Cooley Hidecker1, Barbara Jane Cunningham2, Nancy Thomas-Stonell3, Bruce Oddson4, Peter Rosenbaum2. 1. Division of Communication Disorders, Health Science Center, University of Wyoming, Laramie, WY, USA. 2. CanChild Centre for Childhood Disability Research, McMaster University, Hamilton, ON, Canada. 3. Graduate Department of Speech-Language Pathology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada. 4. School of Human Kinetics, Laurentian University, Sudbury, ON, Canada.
Abstract
AIM: To evaluate construct and predictive validity of the Communication Function Classification System (CFCS) for use with preschool children with a range of speech and language disorders. METHOD: Seventy-seven preschool children with speech and language disorders (50 males, 27 females; mean 2y 7mo, standard deviation [SD] 1y) participated in this cohort study. Preschool children had speech and language, language-only, or speech-only disorders. Together with parent input, speech-language pathologists (SLPs) completed the CFCS at time 1. Parents and SLPs then independently completed a validated change-detecting functional communication outcome measure, the Focus on the outcomes of Communication Under Six (FOCUS), three times: at assessment (time 1), at the start of treatment (time 2), and at the end of treatment (time 3). RESULTS: There was a significant negative correlation between CFCS classifications and FOCUS scores at all three measurement points for the ratings by both parents and SLPs (correlations ranged from -0.60 to -0.76). As expected, no correlations between CFCS classifications and FOCUS change scores were statistically significant. INTERPRETATION: This study provides evidence of construct and predictive validity of the CFCS, demonstrating its value as a discriminative tool for use with preschool children with a range of speech and language disorders.
AIM: To evaluate construct and predictive validity of the Communication Function Classification System (CFCS) for use with preschool children with a range of speech and language disorders. METHOD: Seventy-seven preschool children with speech and language disorders (50 males, 27 females; mean 2y 7mo, standard deviation [SD] 1y) participated in this cohort study. Preschool children had speech and language, language-only, or speech-only disorders. Together with parent input, speech-language pathologists (SLPs) completed the CFCS at time 1. Parents and SLPs then independently completed a validated change-detecting functional communication outcome measure, the Focus on the outcomes of Communication Under Six (FOCUS), three times: at assessment (time 1), at the start of treatment (time 2), and at the end of treatment (time 3). RESULTS: There was a significant negative correlation between CFCS classifications and FOCUS scores at all three measurement points for the ratings by both parents and SLPs (correlations ranged from -0.60 to -0.76). As expected, no correlations between CFCS classifications and FOCUS change scores were statistically significant. INTERPRETATION: This study provides evidence of construct and predictive validity of the CFCS, demonstrating its value as a discriminative tool for use with preschool children with a range of speech and language disorders.