About Us

Rosa E. Patterson, MS, BCBA

Executive Director

Rosa Patterson has been in the field of autism and applied behavior analysis for over 20 years. Her training began under the direct education and training of Dr. O. Ivar Lovaas at U.C.L.A. where she received her bachelor of arts degree in psychology. She went on to receive her master of science in counseling with an emphasis in marriage and family therapy from California State University Fullerton. Ms. Patterson has also received a graduate certificate in behavior intervention for autism from the University of Massachusetts at Lowell. She is a board certified behavior analyst (BCBA).

Ms. Patterson began her teaching experience at UCLA as a head teaching assistant for Dr. Lovaas’ introduction to applied behavior analysis course. While under the direction of Dr. Lovaas she also served as a teaching assistant for 2 of the 3 courses he offered in autism and behavior intervention. Ms. Patterson was responsible for creating course materials, grading student work, being a guest lecturer, and also leading discussion groups. Ms. Patterson is currently an adjunct faculty member at National University in Costa Mesa California. She teaches courses in applied behavior analysis for both their school counseling/psychology programs and applied behavior analysis program. Ms. Patterson also teaches for the Orange County Department of Education where she is responsible for providing autism education to school district personnel for the required autism authorization mandated by the state of California.

Rosa Patterson continues to further her training in the field of autism in order to meet the diverse needs of each of the children she serves. She has attended workshops and trainings on subjects such as: Bullying and Autism, Picture Exchange and Communication System, SCERTS (Social Communication, Emotional Regulation, & Transactional Supports), Social Cognition (Michelle Garcia-Winner), Social Skills, TEACCH, and the Reading and Writing Program for visual learners. She has also been trained in the delivery of the ADOS assessment (Autism Diagnostic Observation Schedule).

Ms. Patterson has been a speaker at conferences for the Lovaas Institute for Early Intervention, Cal-TASH, and the City of Irvine in California. She has spoken on the topics of autism, applied behavior analysis, and inclusion of children on the autism spectrum into general education settings.

In addition, Ms. Patterson is a council member on the Orange County Childcare and Development Planning Council and enjoys volunteering for Pretend City Museum’s autism committee in Irvine California. She is also a member of the Interagency Autism Group in Orange County.

Ms. Patterson has developed autism and ABA programs, provided services, and conducted trainings to families and professionals in California, Texas, and Mexico. She provides ongoing supervision to those pursuing their board certification as a BCaBA or BCBA. Ms. Patterson is fluent in both English and Spanish.

May Guevara, MACP, BCBA

Behavior Specialist

May Guevara pursued her B.A. in Psychology with a Minor in Communication Studies from Chapman University and later earned her M.A. in Clinical Psychology with an emphasis in Marriage and Family Therapy from Pepperdine University. Upon graduation from Chapman, she was hired as a Montessori preschool teacher where she gained experience developing skill-based curriculum encompassing cognitive, social, emotional and physical development. May also worked as a school site counselor for the Orange County Department of Education ACCESS, where she conducted biopsychosocial assessments and provided individual therapy to at-risk and low socioeconomic adolescents.

In addition to her teaching and clinical experience, May has worked as a Behavior Interventionist with a local school district administering individualized ABA strategies to improve children’s academic, social, communication, motor, and adaptive skills.

May is trained in Applied Behavior Analysis (ABA), Discrete Trial Training (DTT), and Picture Exchange Communication System (PECS) and has been working in the field of autism and ABA since 2009. May also received additional training in implementing positive behavioral strategies and behavioral intervention planning and received a certificate in Behavioral Analysis for Successfully Initiating Change (B.A.S.I.C.). May recently attended a two-day workshop on Functional Analysis and Treatment of Severe Behavior Disorders with Dr. Brian Iwata, the field’s foremost researcher on functional analysis methodology.

May was born and raised in Hawaii and moved to California for higher education and greater opportunities. She has always aspired to work with children in order to cultivate their strengths and discover their full potential. May has an especially strong passion for working with children and families affected by Autism Spectrum Disorders and she believes that fostering rapport, balanced support and positive encouragement are essential to each child’s success. She is excited to join the ABSI team and she is looking forward to continue working with children and families.

Natalie Taguchi-Solorio, M.Ed, PPS, BCBA

Behavior Specialist

Natalie Taguchi-Solorio, M.Ed, PPS, earned a Bachelor of Arts Degree in Liberal Studies from Cal State University, Fullerton in 2006 and a Masters of Arts Degree in Education from Azusa Pacific University in 2009. In 2009, upon the completion of her fieldwork hours, Natalie received a Pupil Personnel Services Credential and as a result became a credentialed school counselor.

From 2006 to the present, Natalie has worked one-on-one with children who have been diagnosed with autism spectrum disorders in clinical, home and school settings. Natalie is experienced in ABA, DTT, PECS and social skills training. Natalie has had additional experience and exposure to working with children with ADHD, oppositional defiant disorder, depression and social anxiety disorders.

In November 2011, Natalie joined Autism Behavior Services Inc. as a behavior therapist. Before joining the ABS team, Natalie was employed by school districts in the Orange and Los Angeles County areas, as well as, volunteering with a nonprofit organization which implemented social skills groups for low income families.

When Natalie is not working she can be found chasing after her toddler, scrapbooking or reading a great book.

Ron Lefevre, M.Ed

Behavior Specialist

Ronald Lefevre has worked with at risk youth providing counseling in a group home setting and 1:1 setting since 2006. Ron was responsible for developing and monitoring at risk youth behavioral programs. He has extensive training in crisis intervention and has assisted psychologists with conducting assessements such as the minnesota multiphasic personality inventory.

Ron has worked as a behavior interventionist for children with autism since 2008 for a public school district, and has received several awards such as interventionist of the month and the “I make a difference award” from his superiors and families that Ron has worked with. Ronald has provided services as a class shadow aide, 1:1 applied behavior analysis (ABA) in the home and clinic settings, and parent consultation.

He graduated from the University of California, Irvine in 2006 with dual degrees in Psychology/Social Behavior & Criminology/Law and Society. He obtained his Master’s Degree in Education with emphasis in Applied Behavioral Analysis in 2013. Upon graduation from the University he served as an intern for Community Service Programs as a Juvenile Diversion Specialist. In this position, he counseled first time law offending youths and placed them in a community service setting in which the charges would be dropped if the community service was completed.

In addition to Ron’s education and experience, Ron enjoys researching academic journals in applied behavior analysis that allows him to be knowledgeable about current topics and treatments in ABA. Ron has applied this knowledge to his current cases and has developed single-subject designs for helping families that need help targeting and reducing maladaptive behaviors.

Ronald is a firm believer in positive reinforcement and believes in a family-centered model. He has worked with a diverse population of students of all ages and is always available to families in need.

He is passionate about the field of ABA and has dedicated his career to enrich the lives of children with an autism spectrum disorder.

Ron was born in Taiwan and came to California at the age of two when his father was transferred to work in Newport Beach as a electrical engineer with Ford Aero space in 1985. Ron was raised in Lake Forest, California and still resides there with his wife and dog. He is a Brazilian Jiu Jitsu, Taekwondo, and wrestling practitioner. His most recent interest has been downhill mountain biking which he started just 3 years ago. You can see Ron on his bike at Aliso Woods Canyon or Whiting Ranch on the weekend. Ron is always available to families even when he’s flying down the trails.

“The only disability in life is a bad attitude.” – Scott Hamilton

“Every great dream begins with a dreamer. Always remember, you have within you the strength, the patience, and the passion to reach for the stars to change the world.” – Harriett Tubman

Colleen Cochran, MA, BCBA

Behavior Specialist

Colleen earned her B.S. in Biological Sciences and her B.A. in Psychology in 2005 from the University of California, Irvine. As an undergraduate Colleen worked in the Lab for Cognitive Brain Research, and found she had a passion for studying language and learning.

Colleen started out in the field as a behavior interventionist with the Lovaas Institute in 2005. She instantly fell in love with helping kids and families overcome developmental delays and reduce problem behaviors. In fall 2008, Colleen started graduate school and took a position as an Autism Program Manager for a local school district. Colleen completed her coursework in summer 2010, and successfully defended her thesis in August 2013 earning the degree of M.A. Applied Behavior Analysis. In 2013, Colleen also presented her thesis at the California ABA Conference.

Over her 8 years of working with autism in the field of applied behavior analysis, Colleen has gained experience with Discrete Trial Training, Picture and Textual Exchange Communication Systems (PECS and TECS), behavior reduction procedures, parent training, crisis prevention training, CPR training, frustration tolerance programs, teaching executive functioning skills, and more. Colleen regularly attends national and state-wide conferences for applied behavior analysis, and reads professional journals in the field in order to stay on top of current research.

Colleen believes that behavior intervention should focus on providing therapy that meets the values and goals of each child and family. She loves working with kids, seeing them learn and grow, and fostering continuing education for staff and parents. Her passion in the field continues to be verbal behavior, including language acquisition and development.

When Colleen has time off, she can be found training for half marathons, cooking or baking, camping and hiking, or playing word games.

Briana Jaramillo

Behavior Specialist

Briana has always had a passion for working with children from a young age. She worked in an afterschool program for elementary school aged children before beginning her work with children on the autism spectrum in 2006. Briana has worked as a para-educator in an autism focus classroom as a one to one and a classroom aide. This position confirmed for her that it would be her life profession to work with children on the autism spectrum.

Briana received her Bachelors of Science in Child and Adolescent Development degree from California State University, Fullerton. She studied a range of ages from infants through adulthood which advanced her knowledge in helping children with Autism. She also participated in a number of special education developmental courses which focused on rationale intervention, program models and teaching techniques for both verbal and non-verbal children. She has successfully completed coursework titled Adolescents and Adults with Autism: Evidence-based Practice, Adaptive Behavior, and Quality of Life. This course in turn has provided her with the tools needed for assisting and developing the adult group at ABSI. Briana is currently attending Arizona State University where she will receive her Master’s in Education with an emphasis in applied behavior analysis.

Briana has training in crisis prevention intervention and has worked in both the home and clinical settings. She provides parent consultation and program supervision also. She has education and training in applied behavior analysis, discrete trial training (DTT) and picture exchange communication system (PECS).

Briana has a bubbly personality and drive to succeed which makes her a pleasure to work with. She is looking forward to working with many more families and seeing success in their lives.

Some of Briana’s leisure activities include crafting, cooking, reading and exercising.