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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

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Peer reviewed Peer reviewed
ERIC Number: EJ044166
Record Type: CIJE
Publication Date: 1971
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
Is There an Optimal Number of Alternatives for Likert Scale Items? Study I: Reliability and Validity
Matell, Michael S.; Jacoby, Jacob
Educational and Psychological Measurement, 31, 3, 657-74, Aut 71
Descriptors: Attitude Measures, Evaluation, Measurement, Rating Scales, Test Construction, Test Reliability, Test Validity
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Likert Type Scale