*Note: These contents are assembled from several web sites, some of whom are now defunct. Although I have the documents in my records, I've provided the current links to available items. Copies of material from defunct sites, as well as my works, are provided below. Copyright belongs to the authors and/or publishers of the material according to the information contained in the documents. An internet search of the titles or of content from the material should be made for referencing purposes. The owner of this web site only claims authorship where indicated within the material.
Analyzing Data Measured by Individual Likert-Type Items 1994
Calculating, Interpreting, and Reporting Cronbach’s Alpha Reliability Coefficient for Likert-Type Scales 2003
Guidelines for Constructing a Survey 2002
Likert Scales: brief literature review 2005 Blackman, D.H.
Making Data Meaningful: A guide to improving statistical literacy 2012 (Katherine K. Wallman (1993): "Statistical Literacy' is the ability to understand and critically evaluate statistical results that permeate our daily lives-coupled with the ability to appreciate the contribution that statistical thinking can make in public and private, professional and personal decisions.")
Standards and Assessment Approaches for Students With Disabilities Using a Validity Argument
Validating Assessments for Students with Disabilities - Appropriate accommodations in the design or administration of a test for students with disabilities may be necessary to improve the validity of the results.
Validity Evidence - (In his extensive essay on test validity, Messick (1989) defined validity as “an integrated evaluative judgment of the degree to which empirical evidence and theoretical rationales support the adequacy and appropriateness of inferences and actions based on test scores and other modes of assessment”)