Autism Therapists in Los Angeles, CA

Photo of Evelyn Gould, Psychologist, PhD, BCBA-D, CPsych
Evelyn Gould
Psychologist, PhD, BCBA-D, CPsych
Verified Verified
Online Only
Waitlist for new clients
I have two decades of experience and have particular interest and expertise in OCD, anxiety, Autism, adjustment concerns and LGBTQIA+ mental health.
We offer telehealth, in-home, community, and school-based services. We use an individualized, strengths-based, affirmative, compassionate approach that integrates ERP (Exposure and Response Prevention), ACT (Acceptance and Commitment Therapy), and other evidence-based approaches to support each client to build a rich and meaningful life.
I have two decades of experience and have particular interest and expertise in OCD, anxiety, Autism, adjustment concerns and LGBTQIA+ mental health.
We offer telehealth, in-home, community, and school-based services. We use an individualized, strengths-based, affirmative, compassionate approach that integrates ERP (Exposure and Response Prevention), ACT (Acceptance and Commitment Therapy), and other evidence-based approaches to support each client to build a rich and meaningful life.
(857) 203-8392 View (857) 203-8392
Photo of Heather J Hall, Psychologist, PhD
Heather J Hall
Psychologist, PhD
Verified Verified
Los Angeles, CA 90039
I have worked extensively with children who struggle with symptoms of ADHD, depression, anxiety and autism who need support in managing the everyday social complexities that they face within their school, family and community environments.
As a therapist and group leader of evidence based interventions and social skills groups, I can support children with emotional regulation and effective communication strategies. I have expertise working in an interdisciplinary medication management clinic and understand how correctly prescribed medication, along with appropriate therapy, can help children.
I have worked extensively with children who struggle with symptoms of ADHD, depression, anxiety and autism who need support in managing the everyday social complexities that they face within their school, family and community environments.
As a therapist and group leader of evidence based interventions and social skills groups, I can support children with emotional regulation and effective communication strategies. I have expertise working in an interdisciplinary medication management clinic and understand how correctly prescribed medication, along with appropriate therapy, can help children.
(323) 905-3853 View (323) 905-3853
Photo of Dr. Hilary Adams, Psychologist, PhD
Dr. Hilary Adams
Psychologist, PhD
Verified Verified
4 Endorsed
Los Angeles, CA 90017
I have specialized training to provide assessment and treatment services for people with Autism Spectrum Disorder.
Are you or your children or teens ready to make a change? Through short-term, problem-focused therapy, I can help your family with challenging behaviors (e.g., temper tantrums) or social and emotional issues (e.g, anxiety) within only a few months. With a warm and collaborative approach, I will address your problems and teach you and your child skills to practice in your daily life. I offer weekly individual sessions, parent training, social skills groups, and more. Feel empowered knowing you learned the skills to help your family!
I have specialized training to provide assessment and treatment services for people with Autism Spectrum Disorder.
Are you or your children or teens ready to make a change? Through short-term, problem-focused therapy, I can help your family with challenging behaviors (e.g., temper tantrums) or social and emotional issues (e.g, anxiety) within only a few months. With a warm and collaborative approach, I will address your problems and teach you and your child skills to practice in your daily life. I offer weekly individual sessions, parent training, social skills groups, and more. Feel empowered knowing you learned the skills to help your family!
(323) 302-4832 View (323) 302-4832
Photo of Dr. Courtney Kwan, Psychologist, PhD
Dr. Courtney Kwan
Psychologist, PhD
Verified Verified
Los Angeles, CA 90049
ADHD and autism diagnostic assessments available–email for more information.
Dr. Kwan relies on evidence-based treatments and cultural competence to improve the effectiveness and quality of mental health care for diverse populations. She is passionate about integrating her knowledge and clinical experiences into tailoring her care to one’s unique circumstances and needs.
ADHD and autism diagnostic assessments available–email for more information.
Dr. Kwan relies on evidence-based treatments and cultural competence to improve the effectiveness and quality of mental health care for diverse populations. She is passionate about integrating her knowledge and clinical experiences into tailoring her care to one’s unique circumstances and needs.
(619) 329-8345 View (619) 329-8345
Photo of Matt Tapia, Marriage & Family Therapist, MA, LMFT, BCBA, LBA
Matt Tapia
Marriage & Family Therapist, MA, LMFT, BCBA, LBA
Verified Verified
Online Only
My experience comes from providing direct mental health counseling with kids, teens, and adults with a variety of presenting issues including anxiety, autism, Asperger's syndrome, depression, stress, trauma, relationship and family issues, life transitions, parenting, and caregiving issues in a variety of settings.
Are you feeling stressed, overwhelmed, or stuck? Perhaps you're navigating painful thoughts, anxiety, or challenges that seem insurmountable. You don’t have to face these struggles alone. Welcome! My name is Matt Tapia and I am a Licensed Marriage and Family Therapist (LMFT) in Arizona and California. Over the course of my career, I’ve had the privilege of helping people work through a broad spectrum of challenges. I’ve also seen that hope and relief are possible. I offer a unique perspective in getting you that help. I enjoy seeing individuals and families solve problems and feel closer together.
My experience comes from providing direct mental health counseling with kids, teens, and adults with a variety of presenting issues including anxiety, autism, Asperger's syndrome, depression, stress, trauma, relationship and family issues, life transitions, parenting, and caregiving issues in a variety of settings.
Are you feeling stressed, overwhelmed, or stuck? Perhaps you're navigating painful thoughts, anxiety, or challenges that seem insurmountable. You don’t have to face these struggles alone. Welcome! My name is Matt Tapia and I am a Licensed Marriage and Family Therapist (LMFT) in Arizona and California. Over the course of my career, I’ve had the privilege of helping people work through a broad spectrum of challenges. I’ve also seen that hope and relief are possible. I offer a unique perspective in getting you that help. I enjoy seeing individuals and families solve problems and feel closer together.
(562) 655-7699 View (562) 655-7699
Photo of Loren M. Hill, Psychologist, PhD, CAS
Loren M. Hill
Psychologist, PhD, CAS
Verified Verified
2 Endorsed
Los Angeles, CA 90008
As a Certified Autism Specialist (CAS), I have specific expertise in evaluation of neurodevelopmental disorders including Autism Spectrum Disorders (ASD) and Disabilities (ID).
I work with children (including toddlers), adolescents and young adults) and provide comprehensive assessments that include recommendations and treatment planning. The assessments results can be used to help your family find the appropriate treatment and available resources.
As a Certified Autism Specialist (CAS), I have specific expertise in evaluation of neurodevelopmental disorders including Autism Spectrum Disorders (ASD) and Disabilities (ID).
I work with children (including toddlers), adolescents and young adults) and provide comprehensive assessments that include recommendations and treatment planning. The assessments results can be used to help your family find the appropriate treatment and available resources.
(323) 825-6273 View (323) 825-6273
Photo of Crystal Luna - The Luna Centre, Psychologist
The Luna Centre
Psychologist
Verified Verified
Los Angeles, CA 90025
She is Trained in Mindfulness Facilitation (TMF) from the Mindfulness Awareness Research Center (MARC) and completed a three-year postdoctoral training in neurodevelopment, psychodiagnostic and Autism evaluations at UCLA.
A full service psychology practice addressing wide-range of mental health difficulties through evaluations, individual or couples therapy. To treat difficulties, we use evidence-based evaluations and therapeutic interventions. When emotional difficulties impact certain areas of your life, you may need an evaluation to address impaired areas of your life, such as: Disability Evaluations (Employment), Emotional Support Animal Evaluations (Residence), Psychological Assessments (Academic, Accommodations, Diagnostic Clarification), Immigration Evaluations (Extreme hardship waivers, cancellation, asylum, VAWA, U visa, and T visa).
She is Trained in Mindfulness Facilitation (TMF) from the Mindfulness Awareness Research Center (MARC) and completed a three-year postdoctoral training in neurodevelopment, psychodiagnostic and Autism evaluations at UCLA.
A full service psychology practice addressing wide-range of mental health difficulties through evaluations, individual or couples therapy. To treat difficulties, we use evidence-based evaluations and therapeutic interventions. When emotional difficulties impact certain areas of your life, you may need an evaluation to address impaired areas of your life, such as: Disability Evaluations (Employment), Emotional Support Animal Evaluations (Residence), Psychological Assessments (Academic, Accommodations, Diagnostic Clarification), Immigration Evaluations (Extreme hardship waivers, cancellation, asylum, VAWA, U visa, and T visa).
(310) 706-2337 View (310) 706-2337
Photo of Alexander Gantman, Psychologist, PsyD
Alexander Gantman
Psychologist, PsyD
Verified Verified
Los Angeles, CA 90035
Gantman was also an Autism Clinical Instructor at the UCLA Tarjan Center for Excellence in Developmental Disabilities.
Providing Individual Therapy and Consultation Services. Previously being the Assistant Director of the UCLA PEERS Program and a Principal Investigator for the development and research of Young Adult PEERS Program at UCLA, I am bringing the same rigor and quality of research and practice to Orange County. Teen and Young Adult PEERS groups available.
Gantman was also an Autism Clinical Instructor at the UCLA Tarjan Center for Excellence in Developmental Disabilities.
Providing Individual Therapy and Consultation Services. Previously being the Assistant Director of the UCLA PEERS Program and a Principal Investigator for the development and research of Young Adult PEERS Program at UCLA, I am bringing the same rigor and quality of research and practice to Orange County. Teen and Young Adult PEERS groups available.
(310) 683-2623 View (310) 683-2623
Photo of Jessica Hogan, Psychologist, PsyD
Jessica Hogan
Psychologist, PsyD
Verified Verified
5 Endorsed
Online Only
I also strive to provide access to marginalized communities seeking assessment/identification services, specifically for autism and ADHD.
Have you always felt different from everyone else, or even proudly identified as a "weirdo?" Are you burnt out and exhausted? Have therapy and medications been ineffective for you in the past? Is the search for a therapist or assessor that truly -gets- you more overwhelming than you could have ever imagined? You're in the right place. My clients are often on journeys to learn more about themselves, on a quest to feel better and enhance their quality of life. Nothing makes me happier than being immersed in a client's world. I want to know everything about what you love and care about.
I also strive to provide access to marginalized communities seeking assessment/identification services, specifically for autism and ADHD.
Have you always felt different from everyone else, or even proudly identified as a "weirdo?" Are you burnt out and exhausted? Have therapy and medications been ineffective for you in the past? Is the search for a therapist or assessor that truly -gets- you more overwhelming than you could have ever imagined? You're in the right place. My clients are often on journeys to learn more about themselves, on a quest to feel better and enhance their quality of life. Nothing makes me happier than being immersed in a client's world. I want to know everything about what you love and care about.
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Photo of Deanna Dow - Spectrum Psych | Los Angeles, Psychologist, PhD
Spectrum Psych | Los Angeles
Psychologist, PhD
Verified Verified
Los Angeles, CA 90025
Clinicians in our practice have trained at top programs specializing in the assessment and intervention of neurodivergent individuals, with primary focus on autism spectrum disorder, ADHD, learning disorders, behavioral challenges, anxiety, and mood concerns.
We offer coordinated mental health care, including diagnostic assessments, psychotherapy, psychiatry, occupational therapy, group therapy, and support groups. We help children, adolescents, and adults improve their ability to regulate their emotions, target anxiety and depression, increase flexibility, bolster executive functioning, improve friendships and social relationships, and build independent living skills. We also offer parent support services to build connection and decrease challenging behaviors at home, usually empirically-based strategies. Treatment is always individualized to target specific goals based on unique needs.
Clinicians in our practice have trained at top programs specializing in the assessment and intervention of neurodivergent individuals, with primary focus on autism spectrum disorder, ADHD, learning disorders, behavioral challenges, anxiety, and mood concerns.
We offer coordinated mental health care, including diagnostic assessments, psychotherapy, psychiatry, occupational therapy, group therapy, and support groups. We help children, adolescents, and adults improve their ability to regulate their emotions, target anxiety and depression, increase flexibility, bolster executive functioning, improve friendships and social relationships, and build independent living skills. We also offer parent support services to build connection and decrease challenging behaviors at home, usually empirically-based strategies. Treatment is always individualized to target specific goals based on unique needs.
(424) 374-3991 View (424) 374-3991
Photo of Ciaran Kane Phelps, Marriage & Family Therapist Associate, AMFT
Ciaran Kane Phelps
Marriage & Family Therapist Associate, AMFT
Verified Verified
Los Angeles, CA 90005
My areas of specialty are neurodivergence ( autism, ADHD, etc.
Couples: I love working with all kinds of couples, but especially enjoy supporting queer/trans couples. I have helped couples navigate gender discovery/transition, neurodivergence, polyamory, communication, betrayal, life transitions, and other various relational difficulties. I am poly-, kink-, and ace-affirming.
My areas of specialty are neurodivergence ( autism, ADHD, etc.
Couples: I love working with all kinds of couples, but especially enjoy supporting queer/trans couples. I have helped couples navigate gender discovery/transition, neurodivergence, polyamory, communication, betrayal, life transitions, and other various relational difficulties. I am poly-, kink-, and ace-affirming.
(424) 363-4350 View (424) 363-4350
Photo of Brandon Guin, Marriage & Family Therapist, PhD, LMFT
Brandon Guin
Marriage & Family Therapist, PhD, LMFT
Verified Verified
1 Endorsed
Online Only
Waitlist for new clients
, Autism, ADHD, PTSD, C-PTSD), I have dedicated my career to supporting individuals who experience life through unique cognitive, emotional, and somatic lenses.
My training in clinical psychology has equipped me with the skills necessary to conduct comprehensive assessments, develop tailored intervention plans, and employ a variety of therapeutic modalities, including cognitive-behavioral therapy (CBT), eye movement desensitization and reprocessing (EMDR), mindfulness-based approaches, and somatic approaches.
, Autism, ADHD, PTSD, C-PTSD), I have dedicated my career to supporting individuals who experience life through unique cognitive, emotional, and somatic lenses.
My training in clinical psychology has equipped me with the skills necessary to conduct comprehensive assessments, develop tailored intervention plans, and employ a variety of therapeutic modalities, including cognitive-behavioral therapy (CBT), eye movement desensitization and reprocessing (EMDR), mindfulness-based approaches, and somatic approaches.
(747) 900-4765 View (747) 900-4765
Photo of Laura Lamantia, BCBA
Laura Lamantia
BCBA
Verified Verified
Los Angeles, CA 90029
Services I offer include: Direct Behavior Therapy, Parent Training, Maladaptive Behavior Management, Autism Evaluations, Functional Communication Skills, Life Skills Training, Dating Skills, Consultation & Advocacy Services.
My practice, Back to Basics Behavior Services, provides individualized behavior services for children and adults. I use the evidence-based science of Applied Behavior Analysis to create behavior change that enhances my clients' quality of life by teaching new skills and decreasing maladaptive behavior patterns. Whether I am teaching parents how to increase their child's basic communication skills or helping adults navigate home life and relationships, my approach is client-centered and broken down into basic, accomplishable steps. My mission is to equip my clients with the skills they need to live a happy and fulfilling life.
Services I offer include: Direct Behavior Therapy, Parent Training, Maladaptive Behavior Management, Autism Evaluations, Functional Communication Skills, Life Skills Training, Dating Skills, Consultation & Advocacy Services.
My practice, Back to Basics Behavior Services, provides individualized behavior services for children and adults. I use the evidence-based science of Applied Behavior Analysis to create behavior change that enhances my clients' quality of life by teaching new skills and decreasing maladaptive behavior patterns. Whether I am teaching parents how to increase their child's basic communication skills or helping adults navigate home life and relationships, my approach is client-centered and broken down into basic, accomplishable steps. My mission is to equip my clients with the skills they need to live a happy and fulfilling life.
(818) 938-8041 View (818) 938-8041
Photo of Jasmine Love Leigh, Marriage & Family Therapist Associate, AMFT, APCC
Jasmine Love Leigh
Marriage & Family Therapist Associate, AMFT, APCC
Verified Verified
Los Angeles, CA 90025
I specialize in families and adults who have autism spectrum disorder, depression, trauma, and anxiety.
“Alone we can do so little; together we can do so much.” (Helen Keller) Everyone goes through changes throughout their life. Sometimes these changes can be overwhelming and create uncomfortable experiences, but together we can explore ways to move through change.
I specialize in families and adults who have autism spectrum disorder, depression, trauma, and anxiety.
“Alone we can do so little; together we can do so much.” (Helen Keller) Everyone goes through changes throughout their life. Sometimes these changes can be overwhelming and create uncomfortable experiences, but together we can explore ways to move through change.
(424) 587-0673 View (424) 587-0673
Photo of Christopher Mulligan - Cyber Addiction Recovery Center, Clinical Social Work/Therapist, LCSW
Cyber Addiction Recovery Center
Clinical Social Work/Therapist, LCSW
Verified Verified
1 Endorsed
Los Angeles, CA 90034
I am also a certified Relationship Development Intervention consultant and run groups for children, teens, and young adults with autism and related disorders.
I have 32 years of experience treating children, teens and young adults with anxiety, mood, and impulse control disorders. I specialize in internet and video game addiction, Including teen and adult online pornography addiction. I conduct groups for internet and video game addiction. I provide individual, couples, and family counseling focusing on addiction and the underlying problems that create addiction.
I am also a certified Relationship Development Intervention consultant and run groups for children, teens, and young adults with autism and related disorders.
I have 32 years of experience treating children, teens and young adults with anxiety, mood, and impulse control disorders. I specialize in internet and video game addiction, Including teen and adult online pornography addiction. I conduct groups for internet and video game addiction. I provide individual, couples, and family counseling focusing on addiction and the underlying problems that create addiction.
(562) 250-5109 View (562) 250-5109
Photo of Carly Stern, Clinical Social Work/Therapist, LCSW
Carly Stern
Clinical Social Work/Therapist, LCSW
Verified Verified
Online Only
I treat adults challenged by symptoms related to Autism, Anxiety, OCD, ADHD, relationship challenges, self-esteem, codependency, parenting, and more.
For most of the initial session, I will need information about your personal background, family history, and medical details to understand you better. Some questions may feel overly general, while others may feel somewhat invasive or private. Keep in mind that you don't need to divulge anything that makes you feel uncomfortable, but your answers will help.
I treat adults challenged by symptoms related to Autism, Anxiety, OCD, ADHD, relationship challenges, self-esteem, codependency, parenting, and more.
For most of the initial session, I will need information about your personal background, family history, and medical details to understand you better. Some questions may feel overly general, while others may feel somewhat invasive or private. Keep in mind that you don't need to divulge anything that makes you feel uncomfortable, but your answers will help.
(760) 852-7081 View (760) 852-7081
Photo of Jess Pliszka - Adult Female Autism-Adhd Specialist, LPC, NCC
Jess Pliszka - Adult Female Autism-Adhd Specialist
LPC, NCC
Verified Verified
Online Only
Are you a high-masking woman questioning Autism or ADHD?.
Enhance your cognitive performance, emotional regulation, and executive functioning with our world-renowned specialists. As Autistic & ADHD women, who have implemented the strategies we offer to you, we understand you on a deeper level. Connect globally on your schedule, seamlessly integrating top-tier coaching & mentoring with your busy lifestyle.
Are you a high-masking woman questioning Autism or ADHD?.
Enhance your cognitive performance, emotional regulation, and executive functioning with our world-renowned specialists. As Autistic & ADHD women, who have implemented the strategies we offer to you, we understand you on a deeper level. Connect globally on your schedule, seamlessly integrating top-tier coaching & mentoring with your busy lifestyle.
(929) 800-8532 View (929) 800-8532
Photo of Dr. Boikanyo P. Tlhong, Psychologist, PsyD
Dr. Boikanyo P. Tlhong
Psychologist, PsyD
Verified Verified
1 Endorsed
Online Only
My competencies include clinical diagnostics, psychological evaluations and therapy for Mood / Bi-polar disorders, autism spectrum disorders, ADHD, alcohol and substance abuse, depression and grief and loss issues.
I am a Licensed Clinical Psychologist in California. I earned my doctorate in Clinical psychology from California Southern University and a Masters in Clinical Psychology from Argosy University-Phoenix in 2004. I have more than 20 years of clinical practice working with different clients with serious mental illnesses (SMI), alcohol and substance use disorders. I consider myself to be an avid cognitive behavioral therapist, and prefer to work with adult population.
My competencies include clinical diagnostics, psychological evaluations and therapy for Mood / Bi-polar disorders, autism spectrum disorders, ADHD, alcohol and substance abuse, depression and grief and loss issues.
I am a Licensed Clinical Psychologist in California. I earned my doctorate in Clinical psychology from California Southern University and a Masters in Clinical Psychology from Argosy University-Phoenix in 2004. I have more than 20 years of clinical practice working with different clients with serious mental illnesses (SMI), alcohol and substance use disorders. I consider myself to be an avid cognitive behavioral therapist, and prefer to work with adult population.
(213) 682-2878 View (213) 682-2878
Photo of Sylvan Streightiff, Marriage & Family Therapist Associate, AMFT, ATR-P
Sylvan Streightiff
Marriage & Family Therapist Associate, AMFT, ATR-P
Verified Verified
5 Endorsed
Online Only
As an ADHD, Autism, Bipolar, Chronic Illness, and Complex Trauma specialist, I understand how navigating life can be exhausting and confusing.
My priority in working with individuals and couples is to create a safe space for personal expression. Within sessions, I integrate psychoeducation, somatic work, art-making, journaling prompts, and additional resources to best support your unique needs and goals. I can connect you with the tools you need to feel empowered in your unique healing journey.
As an ADHD, Autism, Bipolar, Chronic Illness, and Complex Trauma specialist, I understand how navigating life can be exhausting and confusing.
My priority in working with individuals and couples is to create a safe space for personal expression. Within sessions, I integrate psychoeducation, somatic work, art-making, journaling prompts, and additional resources to best support your unique needs and goals. I can connect you with the tools you need to feel empowered in your unique healing journey.
(408) 610-1744 View (408) 610-1744
Photo of Samantha Ann Hill, PsyD, MA, EdS, LEP
Samantha Ann Hill
PsyD, MA, EdS, LEP
Verified Verified
Los Angeles, CA 90025
I have most experience with individuals who have learning disabilities, ADHD, anxiety, Autism, depression or other social emotional or learning challenges.
I conduct psycho-educational assessments, educationally related counseling services, social emotional support, and provide consultation and collaboration services to students and parents in understanding neurodivergence, special education, and mental health.
I have most experience with individuals who have learning disabilities, ADHD, anxiety, Autism, depression or other social emotional or learning challenges.
I conduct psycho-educational assessments, educationally related counseling services, social emotional support, and provide consultation and collaboration services to students and parents in understanding neurodivergence, special education, and mental health.
(323) 973-2135 View (323) 973-2135
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Autism Therapists

What is the most effective treatment for autism?

Applied Behavior Analysis (ABA) has come to be considered the standard treatment for children with autism spectrum disorder, and research has confirmed its effectiveness for many children. Therapists trained in ABA techniques work with children (and their parents) on developing social skills, communication and learning abilities, and everyday habits of hygiene and grooming. The clinician will tailor their program to the child’s particular need but the overarching goal will be to help them advance as far as possible toward independence based on their level of symptoms and decrease the need for additional special services. Families should seek a mental health professional specifically trained in ABA, and holding special certification in the technique, who has extensive experience not only with the approach but in using it with children with the same level of symptoms as the child who needs care.

How does ABA work?

Applied Behavior Analysis (ABA) sessions, which typically focus on positive reinforcement, can be intensive, lasting two or more hours several times a week, and continuing for two years or more. Therapists can also be expected to ask parents to take an active role in reinforcing lessons. Research has found that the technique can lead to major improvements that decrease the need for additional special services.

How does treatment for autism work?

Therapy sessions based on Applied Behavior Analysis will likely be frequent, intensive, and highly structured. After a thorough assessment, a therapist will help a child understand and develop skills in a range of areas, including communication, motor skills, social skills, self-care, play, and academic skills, as well as routines of daily living like hygiene. Typically, the therapist will help a child break down the components of a behavior—often referred to as the antecedent (what prompts an action), the behavior, and the consequence(what immediately follows)—and then reward the child at every step, while also asking parents to reinforce the lessons, and the rewards, throughout the day. This core therapy may be supplemented by occupational or speech therapy, and antidepressants, antipsychotics, and anticonvulsants may be prescribed to address specific severe symptoms.

How long does therapy for autism take?

Some people with autism spectrum disorder may be engaged in some level of therapy for many years, but research shows that treatment will be most effective if it is begun early and delivered intensively. When therapy begins by age 3, children tend to be better able to grasp and adopt the skills needed to manage everyday life, including attending school and establishing social relationships. This type of early-intervention treatment regimen is highly structured, typically involving 20 to 40 hours of one-on-one therapy per week, along with additional hours of engagement managed by parents, for a period of two years or more, although the duration of treatment is dependent on the child’s level of symptoms and pace of progress.