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ERIC Number: EJ888980
Record Type: Journal
Publication Date: 2010-Jun
Pages: 7
Abstractor: As Provided
Reference Count: 14
ISBN: N/A
ISSN: ISSN-0013-1644
Initial Scale Development: Sample Size for Pilot Studies
Johanson, George A.; Brooks, Gordon P.
Educational and Psychological Measurement, v70 n3 p394-400 Jun 2010
Pilot studies are often recommended by scholars and consultants to address a variety of issues, including preliminary scale or instrument development. Specific concerns such as item difficulty, item discrimination, internal consistency, response rates, and parameter estimation in general are all relevant. Unfortunately, there is little discussion in the extant literature of how to determine appropriate sample sizes for these types of pilot studies. This article investigates the choice of sample size for pilot studies from a perspective particularly related to instrument development. Specific recommendations are made for researchers regarding how many participants they should use in a pilot study for initial scale development. (Contains 3 figures.)
SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: journals@sagepub.com; Web site: http://sagepub.com
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: Researchers
Language: English
Sponsor: N/A
Authoring Institution: N/A