Aylin Küntay Language and Communicative Disorders Meeting 12 Williams syndrome Aylin Küntay Language and Communicative Disorders Meeting 12
What is WS? A genetic disorder Distinctive facial features Cardiovascular problems Learning disabilities A special cognitive profile
Cognitive characteristics 75% mental retardation; 25% learning disabilities Extreme weakness in visuospatial construction Better performance on verbal measures than on visuospatial measures Mullen Scales of Early Learning
Mullen 4 subtests Visual reception Fine motor (primarily visuospatial construction) Receptive language Expressive language (includes auditory rote memory) Also, Mean Early Learning Composite score
Linguistic development in WS Onset of vocabulary development is delayed Produce referential language several months before they begin to comprehend or produce referential pointing gestures Problems of visuospatial construction and interest in people rather than objects Expressive vocabularies of 24-m-olds are much larger than those of same-CA children with Down Syndrome Syntactic abilities better than the the DS group as well Auditory rote memory is a strength
Visuspatial construction Pattern construction (block design) Drawing More difficulty than DS even when copying simple geometric figures Focus on parts rather than wholes Bicycle example on p. 153 Great difficulty with the fine motor test of Mullen, performance on visual reception much better, and equivalent to language scores Corsi block tapping task Measure of spatial working memory that involves replicating block tap sequences of various lengths produced by the researcher
WS cognitive profile Digit recall, naming/definitions > 1st percentile Pattern construction < 20th percentile Pattern construction score < mean score for the core subtests of Differential Abilities test Pattern construction score < digit recall score
Personality, temperament Highly sociable, visible Highly anxious High in empathy High in Unshyness Early manisfestation Intense look at human faces No fear of strangers