The use of augmentative and alternative communication systems based on graphic symbols requires children to learn to combine symbols to convey utterances. The current study investigated how children without disabilities aged 4 to 6 years (n = 74) performed on a simple sentence (subject-verb and subject-verb-object) transposition task (i.e., spoken…

The development of mental imagery in relation to the comprehension of concrete proverbs (e.g., "one rotten apple spoils the barrel") was examined in children, adolescents, and adults who were ages 11 to 29 years old (n = 210). The findings indicated that age-related changes occurred in mental imagery and in proverb comprehension during the years…

Investigation of the perception and production of English voiceless fricatives in normally developing monolingual 3- to 5-year-olds (N=12) partially supported the hypothesis that certain sound substitutions by older children are perceptually based substitutions, typified by poor discrimination, while others are phonetic substitutions--phonemic…