our Trainers

GS Consultants has been providing Strong Interest Inventory® and MBTI® training and program development consulting since 1978. We are committed to the promotion of the ethical use of career assessments. Our trainers are organizational consultants, National Certified Career Counselors, psychologists, and educators, with extensive experience in using and teaching the Strong Interest Inventory® and MBTI® assessments.

Judith Grutter, M.S., NCC, MCC

Judith Grutter, GS Principal and trainer, has been a career development program consultant and trainer for over 40 years. A National Certified Counselor and NCDA Master Career Counselor, she developed and for several years coordinated the graduate programs in career counseling at California State University, Northridge. She is on CSUN's adjunct faculty, as well as the MBTI certification training faculties of the American Management Association and CPP, Inc.

Ms. Grutter consults regularly with business, industry, education, and government on programs and issues related to career selection, satisfaction, and transition. She is a recognized authority on the uses of assessment in career counseling, and is co-author of the Strong Interest Inventory® Interpretive Report, the Strong and MBTI® Career Report, Where do I go Next? Using Your Strong Interest Inventory® Results to Manage Your Career, and Making it in Today’s Organizations Using the Strong and MBTI® Tools. Her latest publication is Career Exploration for College Students Using the Strong and MBTI® Tools.

A past president of the California Career Development Association, Ms. Grutter is a recipient of the National Career Development Association's Award for Excellence in Career Development, the California Career Development Association’s first Judith Grutter Practitioner of the Year Award, and the 2004 Lifetime Achievement in Career Development Award.

Jean M. Kummerow, Ph.D.

Dr. Jean Kummerow is a psychologist/consultant/author in St. Paul, Minnesota. She specializes in career counseling, leadership/management development, and team building, and has worked with a variety of for-profit, non-profit, and governmental organizations. She trains professionals internationally in the use of psychological instruments such as the Myers-Briggs Type Indicator (MBTI®), the MBTI® Step II, and the Strong Interest Inventory® assessments.

She writes on topics such as leadership development, team building, communication styles, career development, and adult life stages. Her chapter, "Uses of Type in Career Counseling," is in the revised 1998 MBTI® Manual. She is co-author of Introduction to Type® in Organizations, LIFETypes, and the Strong Interest Inventory® instrument + MBTI® Career Development Guide and Workbook; and is editor of New Directions in Career Planning in the Workplace. She co-authored the MBTI® Step II Expanded Interpretive Report and Client Workbook.

Jean has previously held positions as a Consulting Psychologist with a management consulting firm, and as a Counselor, Instructor and Research Associate at the University of Minnesota. Her doctorate is in Counseling and Student Personnel Psychology from that same institution. She is a licensed psychologist in the state of Minnesota.

Jean is a co-author of the GS Strong Interest Inventory® Certification Program, and a contributor to the GS MBTI® Qualifying Program for Career Counselors and Educators.

Cheryl Hollatz-Wisely, M.Ed.

Cheryl has been steeped in personality assessments and career development for over 20 years. From her first position as an Assessment Specialist to her current work as a career practitioner and GS Consultants MBTI/Strong Interest Inventory® trainer and consultant, her love of assessments has never flagged. She has experience as a trainer and practitioner in business, industry, and college and university settings. She holds a Master of Education degree from the University of Missouri-St. Louis with a focus on career development and assessment. She is currently on the Portland (OR) State University Career Center faculty, where she is also involved in campus-wide outcomes assessment projects. In addition, Cheryl is adjunct faculty at Clackamas Community College (Oregon City, OR), where she teaches college success and personal development classes.

Cheryl is a credentialed MBTI Master Practitioner and facilitates MBTI trainings and Strong Interest Inventory Certification Programs for GS Consultants. Her areas of expertise are career development, personal and professional growth, teaching and workshop delivery, outcomes assessment, diversity training, and program and curriculum development.  A transplant from the Midwest, Cheryl resides in the Pacific Northwest where she enjoys gardening, walking, reading fiction, coaching volleyball, crunching numbers for fun, her dogs, and her family.