Janis developed his theory of groupthink by examining the behavior of past groups that made poor decisions.He examined items such as meetings notes,group member's public statements,and letters.Did Janis perform a qualitative or a quantitative study? What are the advantages and disadvantages to the approach Janis used?

Groupthink

A psychological phenomenon that occurs within a group of people, where the desire for harmony or conformity results in irrational or dysfunctional decision-making outcomes.

Qualitative Study

A research method focusing on obtaining data through open-ended and conversational communication, aimed at understanding concepts, thoughts, or experiences.