Since the introduction of brainstorming as an idea‐generation technique to address organizational problems, researchers have struggled to replicate some of the claims around the technique. One major concern has been the differences in the number of ideas generated between established groups as found in industry versus the non‐established groups used in the laboratory. The impact of group establishment on idea quality has also been an area of interest. This study addresses these issues by using a more in‐depth induction to establish groups and testing some discrepancies in the relationship between idea quality and idea quantity using 42 three‐person brainstorming groups. Results indicate that brainstorming groups, given an adequate amount of time (10 weeks) to become established, did generate more ideas and higher quality ideas than non‐established groups. Also, a relationship between idea quality and idea quantity was found. Further discussion of results and implications follows.