Youngsters with moderate or severe mental retardation and severe spoken language impairments. I: Extant communicative patterns.

This study characterizes the communicative patterns of youngsters with moderate or severe mental retardation and severe spoken language impairments who are not independent speakers with conversational partners at home and at school. Nine subjects were observed during six 1-hr mealtime sampling periods in both settings for a total of 12 hr. Live continuous observations were made, employing a coding scheme designed to record occurrences of the subjects' communicative behaviors. Findings are discussed with respect to the modes and functions of the youngsters' communications with home and school conversational partners.