Photo of Brenda Muller Ellis Brenda Muller Ellis (ENFP)

Brenda is widely recognized as a world-leading expert on Psychological Type and Jungian Psychology. She has worked as a consultant of applied Psychological Type since 1998, and has administered personality tests to hundreds of individuals in person, in addition to hundreds of thousands online. She's been engaged for personal consulting services, large and small public speaking events about Personality Type, and has had personal and professional relationships with such type gurus as Elizabeth Murphy, Lenore Thomson, and David Keirsey (now deceased,) among others.

For the first ten years of her professional life, Brenda worked as an independent high-tech consultant, contracting with Fortune 50 companies to provide work and advice on software development issues. She climbed to the top of that ladder before realizing that the corporate world was not a good fit for her personality, so she left at the height of her success to pursue developing a business around Psychological Type. She developed, along with the Personality Questionnaire, as a means to help people better understand and tolerate each other. Having graduated from the University of Wisconsin-Madison with a customized degree in Writing, Cognitive Psychology, and Computer Science, and having been a life-long student of Jungian Psychology, the work exactly matched her interests and skill set.

Brenda is an accomplished writer of fiction as well as non-fiction. Her debut novel Roza's War is scheduled for publication in late summer 2024.