Discrepancy between parental reports of infants' receptive vocabulary and infants' behaviour in a preferential looking task.
Two experiments are described which explore the relationship between parental reports of infants' receptive vocabularies at 1 ; 6 (Experiment 1a) or 1;3, 1;6 and 1;9 (Experiment 1b) and the comprehension infants demonstrated in a preferential looking task. The instrument used was the Oxford CDI, a British English adaptation of the MacArthur-Bates CDI (Words & Gestures). Infants were shown pairs of images of familiar objects, either both name-known or both name-unknown according to their parent's responses on the CDI. At all ages, and on both name-known and name-unknown trials, preference for the target image increased significantly from baseline when infants heard the target's label. This discrepancy suggests that parental report underestimates infants' word knowledge.
School of Psychology & Clinical Language Sciences, University of Reading, UK. c.houston-price@reading.ac.uk
Carmel
C
Houston-Price
Emily
E
Mather
Elena
E
Sakkalou
D002663:Child Language; D002755:Choice Behavior; D005403:Fixation, Ocular; D006801:Humans; D007223:Infant; D010290:Parents; D011795:Surveys and Questionnaires; D014705:Verbal Behavior; D014825:Vocabulary