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written by William M. K. Trochim
The Research Methods Knowledge Base is a comprehensive web-based textbook that addresses the topics covered by a typical introductory undergraduate or graduate course in social research methods.

The Knowledge Base covers the entire research process including: formulating research questions; sampling (probability and nonprobability); measurement (surveys, scaling, qualitative, unobtrusive); research design (experimental and quasi-experimental); data analysis; and, writing the research paper. It also addresses the major theoretical and philosophical underpinnings of research including: the idea of validity in research; reliability of measures; and ethics.

The Knowledge Base was designed to be different from the many typical commercially-available research methods texts. It uses an informal, conversational style to engage both the newcomer and the more experienced student of research. It is a fully hyperlinked text that can be integrated easily into an existing course structure or used as a sourcebook for the experienced researcher who simply wants to browse.
Subjects Levels Resource Types
Education Foundations
- Assessment
= Methods
- Research Design & Methodology
- Graduate/Professional
- High School
- Lower Undergraduate
- Upper Undergraduate
- Collection
- Instructional Material
= Course
= Curriculum
= Textbook
- Reference Material
= Nonfiction Reference
Intended Users Formats Ratings
- Learners
- Researchers
- text/html
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© 2006 William M.K. Trochim
Research Methods Knowledge Base, validity
Record Creator:
Metadata instance created March 9, 2004 by Cathy Ezrailson
Record Updated:
August 18, 2020 by Lyle Barbato
Last Update
when Cataloged:
October 20, 2006
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AIP Format
W. Trochim, (2006), WWW Document, (
W. Trochim, Social Research Methods Knowledge Base (2006), <>.
APA Format
Trochim, W. (2006, October 20). Social Research Methods Knowledge Base. Retrieved July 15, 2024, from
Chicago Format
Trochim, William. Social Research Methods Knowledge Base. October 20, 2006. (accessed 15 July 2024).
MLA Format
Trochim, William. Social Research Methods Knowledge Base. 2006. 20 Oct. 2006. 15 July 2024 <>.
BibTeX Export Format
@misc{ Author = "William Trochim", Title = {Social Research Methods Knowledge Base}, Volume = {2024}, Number = {15 July 2024}, Month = {October 20, 2006}, Year = {2006} }
Refer Export Format

%A William Trochim %T Social Research Methods Knowledge Base %D October 20, 2006 %U %O text/html

EndNote Export Format

%0 Electronic Source %A Trochim, William %D October 20, 2006 %T Social Research Methods Knowledge Base %V 2024 %N 15 July 2024 %8 October 20, 2006 %9 text/html %U

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