Know-It-Alls (KIAs) are knowledgeable and very competent people, highly assertive and outspoken in their viewpoints, according to Drs. Brinkman and Kirschner.
These personalities want to get the job done their way. They are controlling with a low tolerance for correction or contradiction. Present a new idea and the Know-It-All will think and/or feel that their competency is being challenged. They will push back and question the questioner. Read how to deal with them here: