Skip to content


Dr. Alexandra Rothstein

Meet Alexandra Rothstein, Quebec’s First Certified Behaviour Analyst and Founder of ABC Solutions

Alexandra Rothstein is the founder of ABC Solutions and Quebec’s first Board Certified Behaviour Analyst. But that’s not the only reason Alexandra – or Alex to her close friends – should earn your trust. With more than 20 years of experience as a Behaviour Analyst and Psychologist, Alexandra works with children with autism spectrum disorders; developmental disabilities; and social, emotional, and behavioural difficulties – and she does so with care, humanity, and a genuine interest in helping others. Alexandra is also a member of the Ordre des psychologues du Quebec (OPQ).

A Master’s in Nevada led to a Doctorate in Montreal

Before launching ABC Solutions, Alexandra worked hard to build on her passion for helping others. She obtained a Master’s Degree in Applied Behaviour Analysis from the University of Nevada, Reno and her Doctorate (Psy.D/Ph.D profile) from the Université du Quebec à Montreal under the supervision of Dre. Melina Rivard. Alexandra’s thesis project, “Evaluating the Pyramid Model (PM) and Coaching Educators in Early Childhood Settings in Promoting Social-Emotional Competence and Decreasing Challenging Behaviors in Young Children,” evaluated the Pyramid Model by applying live coaching for educators working in inclusive daycares.

Between her Master’s Degree and Doctorate, Alexandra developed and supervised early intervention programs for children with autism spectrum disorders and developmental delays in home, centre, and community settings in both the private and public sectors. She has also trained, mentored, and supervised many educators wishing to pursue a career in Applied Behaviour Analysis.

A Thriving Private Practice

Today, Alex works in private practice as a consultant serving various families and children, and providing behaviour management strategies and training for parents and professionals. She has also served as Adjunct Faculty for the Chicago School of Professional Psychology and is currently Part-Time Faculty for Concordia University in Child Studies.

Alexandra is very passionate about helping others. She is dedicated to her clients and takes pride in their success. She enjoys working collaboratively with parents and other professionals and understands the value and support potential that everyone brings to the table to help children thrive.

Alexandra is a mom of three daughters, who she loves to spend time with. Her hobbies include exercising, biking, skiing, tennis, yoga, and spending time with her family.

Bryan Solloway

Say Hello to Bryan Solloway, Vice President of ABC Solutions

Bryan approaches every day believing each child deserves a fair chance at success. And by creating and supervising highly individualized behavioural and integration programs, Bryan can ensure the children he guides get that opportunity. 

First, a Little Background

Bryan Solloway, a native of Montreal, first completed an Undergraduate degree in Sociology at Concordia University, followed by a Master of Science degree from Sage Graduate School in New York, specializing in both Autism and Applied Behaviour Analysis (ABA).

Bryan’s background put him on a path to help children one-on-one through an ABA therapeutic approach, behavioural modification programs, functional behaviour assessments, and coaching parents. He also develops workshops for and coaches organizations, schools, and families. As well, his expertise managing problem behaviours, working with children with autism spectrum disorders, ADHD, social skill deficits, and childhood anxiety make him a go-to resource in Montreal’s West Island and beyond. 

Extending ABC Solutions Beyond The Office

Bryan thoroughly enjoys collaborating with other professionals and paraprofessionals. He has presented strategies to large and small audiences to address childhood anxiety, manage problematic behaviours, integrate students with special needs in the classroom, and positive reinforcement strategies.

He also enjoys spending time with family and friends, trying cool restaurants, skiing and picking up a good book.