Does careful research. Makes use of the psychological evidence and concepts. Follows the rules for constructive controversy. Critical thinkers identify inherent biases and assumptions. Critical thinkers maintain an air of skepticism.
Critical thinkers separate facts from opinions.
Critical thinkers don't oversimplify. Critical thinkers use logical inference processes. Critical thinkers examine available evidence before drawing conclusions. Thinking critically about psychology , by Randolph A. Smith. I am critical of ideas, not people.