This is the 2007 version. Click here for the 2017 chapter 01 table of contents.

Summary: Critical Thinking

Critical thinking has been advocated as an educational goal since the 1950s. Psychologists, who are skeptical as a group, value critical thinking.

Science can be described as an attempt to map natural systems. To gather scientific evidence, one must use operational definitions that relate words to measurement operations. Operational definitions aid replications that help to make science a self-correcting system.

The Quack Science syndrome is a distinct set of features that marks unscientific theories being passed off on the public as scientific breakthroughs. Quack science is typically publicized outside the scientific journal system. The scientific establishment may be accused of a conspiracy against the new ideas.

Write to Dr. Dewey at

Don't see what you need? Psych Web has over 1,000 pages, so it may be elsewhere on the site. Do a site-specific Google search using the box below.

Custom Search

Copyright © 2007-2011 Russ Dewey