Meet Our Growing Team of Instructors

Learn from trusted professionals who bring real-world experience, practical insight, and heart-centered leadership to the field of ABA.

Meet Our Instructors

Amelia Dalphonse, MA, BCBA:

Amelia Dalphonse, MA, BCBA, co-founded Master ABA with her twin sister, Dianna Kelly, bringing over 13 years of expertise in Applied Behavior Analysis (ABA). Passionate about prioritizing client needs, Amelia earned a Master’s degree in ABA and became a Board Certified Behavior Analyst (BCBA®).

At Master ABA, Amelia and Dianna lead with innovation, emphasizing client-centered care to drive meaningful change. As an ACE provider, they’ve established the institution as a hub for progressive ABA practices, inspiring others to adopt compassionate and ethical approaches.

Through her role at Master ABA, Amelia advocates for advancing the ABA field with empathy and integrity. She stays abreast of the latest research, continuously seeking opportunities for professional growth.

Nicole Dionne, MA, LCMHC, BCBA:

Nicole Dionne is a Licensed Clinical Mental Health Counselor based in Greenland, NH, with over 19 years of experience in the mental health field. She emphasizes the importance of collaborative relationships and acknowledges the inherent strength within each individual who seeks her guidance. Dionne’s primary objective is to create a secure environment conducive to processing and overcoming life’s stressors.

Her services cater to individuals spanning from early childhood through adulthood. Dionne specializes in perinatal, prenatal, and infant mental health, focusing on early intervention. Additionally, she is proficient in working with a neurodiverse clientele, addressing conditions such as autism, ADHD, and various intellectual and neurodiverse presentations.

Dr. Steffen Wilson, Ph.D., BCBA, LBA (KY):

Dr. Steffen Wilson, PhD, BCBA earned a Ph.D. in Developmental Psychology in 1997 and became a Board Certified Behavior Analyst (BCBA®) in 2019. She specializes in providing in-home services utilizing natural environment instruction. Drawing on her expertise in developmental psychology, she integrates developmental principles into her ABA practice, which serves as the foundation for her courses. She can be contacted directly at: [email protected]

Christi Wilson, MS, BCBA :

A seasoned BCBA® with over a decade of experience, Christi has dedicated her career to helping individuals with diverse needs thrive. Her extensive background spans residential settings at the New England Center for Children and Becket Family of Services, as well as home, school, and community-based interventions through Granite State ABA Services. Driven by a passion for both behavior analysis and leadership, Christi’s mission is to support the continued growth and depth of the ABA field, sharing her knowledge and expertise with other professionals.

MaKayla Smith, MS, BCBA:

MaKayla Smith, a Board Certified Behavior Analyst (BCBA) since 2018, is passionate about empowering families through effective parent engagement in ABA therapy. With a wealth of experience across diverse settings—including center-based, home-based, and school-based services—MaKayla has honed her expertise in collaborating with parents and caregivers to achieve the best possible outcomes for her clients. She is a strong advocate for naturalistic teaching and person-centered approaches, believing that parents are essential partners in the therapeutic process. MaKayla's dedication to parent training stems from her firsthand experiences witnessing the transformative impact of strong parent-clinician collaboration. She is committed to sharing her knowledge and insights to help BCBAs® build meaningful partnerships with families and unlock the full potential of ABA therapy.

Robyn Powley, M.Ed., BCBA :

Robyn Powley has over 30 years of experience serving as a Special Educator, Special Education Administrator, and Board Certified Behavior Analyst (BCBA®). Throughout her career, she has worked tirelessly in PreK-12 schools, developing innovative programs and interventions that have had a profound impact on students with multiple disabilities, including emotional handicaps, autism, intellectual disabilities, and learning disabilities.

With a Master’s Degree in Special Education, specializing in Emotional and Behavioral Disorders, and an advanced graduate national board certification in Applied Behavior Analysis (ABA), Robyn has recently pivoted to a new endeavor—creating workshops for Master ABA and offering parent coaching through her website, www.robynpowleyconsulting.com. Sharing her expertise and providing workshops to fellow professionals is a true passion of hers.