Board Certified Behavior Analysts

Laura TatroeLaura Tatroe

Credentials: LMSW, BCBA

As an MSU student, Laura completed a graduate-level internship at ROI. The positive work environment and warm atmosphere—which she believes are a direct reflection of the company’s leadership—inspired Laura to begin her career with ROI. She accepted a full-time position immediately upon graduation and now serves as the Clinical Manager for the Okemos Learning Center.

“We are a family here, and I cannot imagine myself anywhere else.”

  • 2007—Michigan State University
    • B.A., Social Work
  • 2009—Michigan State University
    • M.S.W.

Kristin HouckKristin Houck

Credentials: LMSW, BCBA

Kristin began working with children with Autism Spectrum Disorder and other developmental disabilities in 2007 in a variety of settings, including schools, non-profit organizations, research studies, summer camps, and in-home programs. After earning her Master of Social Work, Kristin accepted a position with ROI as a Behavior Therapist in late 2013 and went on to earn her BCBA certification in 2014. In mid-2017, Kristin accepted the position as the Clinical Manager for the Ann Arbor Learning Center.

Aside from her passion for working with children, Kristin is a huge sports fan and attends as many sporting events as possible.

“At ROI, I am fortunate to work in a collaborative environment where the number one priority is empowering others to improve their lives.”

  • 2011—University of Michigan
    • B.A., Psychology
  • 2012—University of Michigan
    • M.S.W.

Kelley Vallentinekelley

Credentials: M.Ed., LMSW, BCBA

Kelley has worked with children and adolescents with disabilities for over 8 years. This work has developed one of Kelley’s greatest passions in her life, to advocate for children and adolescents with disabilities and to support their families through the process of raising a child with disabilities. Kelley was a direct care worker for ROI for 2 years while attending Michigan State University. She continued her education at the University of Michigan School of Social Work, and graduated with a Masters in Social Work in July 2013. After obtaining her MSW, Kelley joined the Community Living Support side of ROI as a Behavior Therapist. This work further developed Kelley’s passion for working with individuals with severe problem behaviors. In the spring of 2016, Kelley decided to pursue her second Master’s degree as well as her BCBA certification. Kelley completed her Master of Education in May 2017 and passed her BCBA exam that fall.

“There is a unique joy to serving children with disabilities. I love having a hand in helping a child or adolescent grow their skills and understanding, and I have come to find few things as rewarding as witnessing a family light up when their child proudly shares a new skill. It’s exactly the kind of work I want to be doing.”

  • 2012 —Michigan State University
    • B.A., Social Work
  • 2013 — University of Michigan
    • M.S.W.
  • 2017 – University of Cincinnati
    • Masters of Education in Foundations in Behavior Analysis

Ellen Braceellen

Credentials: MS, BCBA

Ellen earned her master’s degree in Applied Behavior Analysis from Northeastern University in 2003.  She worked as a supervisor of services for children with autism in Southern California for three years before moving overseas to work with victims of human trafficking for four years.  After moving back to the United States in 2010 and starting a family, she accepted a position with ROI in 2013 as an ABA Therapist until she passed her BCBA examination in 2016.

A Favorite Quote: “And now these three remain: faith, hope and love. But the greatest of these is love.”  The Apostle Paul

  • 1998 – Azusa Pacific University
    • B.S., Psychology
  • 2003 – Northeastern University
    • M.S., Applied Behavior Analysis

Steven Williford

Credentials: MA, BCBA

Steve began working with individuals with Autism at an inclusion camp in the summer of 2004. After enjoying his experience at the camp, Steve decided to return to graduate school to pursue his Master’s degree in special education with a focus in Autism. During school, he worked as a para-educator in a cross categorical classroom and in the summer he was a lead therapist at a summer fun camp for students with Autism. After completion of his Master’s program in 2013, he accepted a position as a teacher for students with Autism in the Ingham Intermediate School District. After working with Ingham ISD for 3 years he decided that the philosophy at ROI was a better fit with his own views on the most effective way to educate individuals with Autism. Steve applied for a position as an ABA Therapist and was hired in October 2015.

Steve grew up in the metro Detroit area but currently resides in East Lansing. In his free time he enjoys MSU sports, the Detroit Pistons, spending time with his dog, mad libs, Uno, baked goods and HGTV. On a related note, he really dislikes speed bumps and overly windy days.

“Just because I rock does not mean I am made of stone”

  • 2002 – Michigan State University
    • B.A. in Communication
  • 2006 – Wayne State University
    • M.A. in Special Education, with a focus on Autism
  • 2015 – Michigan State University
    • Graduate Certificate Program

Ariana Yoder

Credentials: MA, BCBA

Ariana was introduced to Autism Spectrum Disorders when her younger brother was diagnosed with High-Functioning Autism in 2008. Her experiences with her brother influenced her to obtain a bachelor degree in Behavior Science from Western Michigan University. While completing her undergraduate degree, Ariana participated in a practicum where she was exposed to a variety of cultural experiences. During this practicum, Ariana noticed the need for high-quality services for non-English speaking families, and decided to double-major in Behavior Science and Spanish Language. She completed her undergraduate studies in 2014 and worked as a Behavior Technician, implementing Applied Behavior Analysis therapy before returning to Western Michigan University to complete a master’s degree in Behavior Analysis with a focus on Autism.  Outside of work, Ariana enjoys traveling, crafting, and spending time with her pets.

Her favorite quote: “Find something you love to do and you’ll never have to work a day in your life.” -Arthur Szathmary.

  • 2014 – Western Michigan University
    • B.S., Psychology: Behavior Science and Spanish Language
  • 2017 – Western Michigan University
    • M.A., Behavior Analysis