ERIC Number: ED211228
Record Type: RIE
Publication Date: 1981-Jun
Reference Count: 0
A Developmental Study of the Intension and Extension of Four Natural Concepts.
To investigate the development of children's knowledge of the intension and extension of four natural concepts (cup, scissors, money, and musical instrument), three questions were explored in an experiment involving one-hundred-and-twenty 3-, 5-, and 7-year-old children (40 children for each age group). Extension was measured in a verbal labeling task in which subjects were asked whether three exemplar and three distractor objects could be called by the name of the concept. For example, could each of the six objects used for the cup concept be called a cup. Intension was assessed in a conversation task in which children were asked three questions for each concept. For example, (1) What is a cup? (2) What is a cup used for? (3) Tell me all you know about a cup. Researchers first sought to specify the intension and extension of the four natural concepts. Second, they attempted to determine if intensional information was used by subjects to guide extension of their concepts. Third, they investigated whether or not making intensional information salient enabled subjects of all three ages to use intensional information to guide the extension of their concepts. Experimental group subjects received a demonstration of the function of the exemplars for each concept while the control group performed a drawing activity. Both groups performed labeling and conversation tasks. Results are discussed. (Author/RH)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Identifiers: Canada; Intension Extension (Concepts); Verbal Labeling
Note: Paper presented at the Annual Meeting of the Canadian Psychological Association (Toronto, Ontario, Canada, June, 1981).