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ERIC Number: ED081625
Record Type: RIE
Publication Date: 1972
Pages: 98
Abstractor: N/A
Reference Count: N/A
ISBN: N/A
ISSN: N/A
Student Responses to Equivalent Inference Schemes in Class and Conditional Logic.
Ryoti, Don Eino
The study compared the responses of fourth- and ninth-grade children between equivalent inference patterns in class logic and conditional logic. A testing instrument of 72 class-logic items and 72 conditional-logic items was constructed for the study. Eighty-one fourth-grade students and 67 ninth-grade students participated. Results showed that for the fourth-grade students, differences between mean scores on the class logic and on the conditional logic were not statistically significant. For the ninth-grade students, differences between mean scores on the class-logic inference schemes with premises "no A are B" and the conditional-logic inference schemes with premises "if p(x), then not q(x)" were statistically significant. Differences between inference schemes with a premise"all A are B" and with "no A are B," differences between inference schemes with a premise "if p(x), then q(x)" and with "if p(x), then not q(x)," and differences between mean scores for items testing reasoning from the converse and testing logical equivalency of a statement and its converse were all statistically significant for both fourth- and ninth-grade students. (Author/DT)
University Microfilms, 300 North Zeeb Road, Ann Arbor, Michigan 48106 (Order No. 73-17,395 Microfilm-$4.00, Xerography-$10.00)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A
Note: Ph.D. Dissertation, University of Illinois at Urbana-Champaign