OCD in children: the CBPT assessment & treatment protocol
An evidence-based, clinician-facing guide to the symptoms of obsessive-compulsive disorder in children — obsessions, compulsions and intrusive thoughts — and to the structured Cognitive Behavioral Play Therapy protocol that treats it through play.
Train in the CBPT protocol for childhood OCDScientific direction: Maria A. Geraci and Susan M. Knell
Five-phase clinical pathway
For child psychotherapists
Through play, children learn to face the thoughts that frighten them — one brave step at a time.
— Susan M. Knell, Cognitive Behavioral Play Therapy
When thoughts get stuck on repeat
OCD in children is an anxiety-related disorder — not stubbornness, not a phase.
A child with obsessive-compulsive disorder is gripped by intrusive, unwanted thoughts (obsessions) and driven to repeat behaviours or mental acts (compulsions) in an attempt to neutralise the distress. The relief is brief, the loop tightens, and rituals can consume more than an hour a day. Young children often cannot articulate why they must wash, check or repeat — for the clinician, the presenting picture is a child trapped by their own thoughts.
“If I don’t do it just right… something bad will happen.”
Understanding OCD in children
A clinical overview: what obsessive-compulsive disorder is, how its symptoms present, when it begins, and the factors that cause and maintain it.
Obsessive-compulsive and related disorder (DSM-5-TR)
Presence of obsessions and/or compulsions that are time-consuming or cause significant distress
Childhood or adolescence — onset may be sudden or gradual
Around 1–3% in youth in the clinical literature — figures vary by study and method
Often lower than in adults; children may not recognise symptoms as problematic
Frequently persists or runs a chronic/episodic course; impairs school, social and family functioning
What is OCD? (DSM-5-TR definition)
Obsessive-compulsive disorder is defined by the presence of obsessions and/or compulsions that are time-consuming or cause clinically significant distress.
Obsessive-compulsive disorder is a psychopathological condition seen in both adults and children. It is a severe, often disabling and frequently chronic disorder characterised by uncontrollable, repetitive and ritualistic thoughts and behaviours that cause distress and impairment. For a diagnosis, the DSM-5-TR requires that obsessions or compulsions consume time — for example, more than one hour per day — or cause clinically significant distress or impairment in social, school or other important areas of functioning. Clinically significant obsessive-compulsive behaviours differ from developmentally appropriate ritualistic and repetitive behaviours in their severity, the distress they cause, and their negative impact on the child’s and family’s development and functioning. Young children may be unable to articulate the reasons for these behaviours or mental acts.
Symptoms & presentation: obsessions and compulsions
OCD symptoms present as obsessions — recurrent intrusive thoughts — and compulsions performed to reduce the resulting anxiety.
Obsessions are recurrent and persistent thoughts, ideas, sensations, worries or images that are typically experienced as intrusive and unwanted. In children they may surface as intrusive thoughts expressed through repetitive questioning; by definition, obsessions cause distress. Compulsions are behaviours or mental acts performed repetitively in response to obsessions, in an often ineffective attempt to reduce the anxiety the obsession provokes, or to avert some imagined harm. Children frequently lack the verbal skills to describe their internal states or to explain why they perform a specific compulsion.
Children with OCD typically present two or more symptom clusters, which may include fears of contamination, aggressive or catastrophic obsessions, religious or scrupulous obsessions and somatic obsessions. The most common compulsions are:
- Washing and cleaning
- Checking
- Repeating
- Rituals involving other people
- Ordering and arranging
- Counting
- Tapping and rubbing, and tic-like compulsions
OCD vs normal childhood rituals
Clinically significant OCD is distinguished from the rituals and repetitive behaviours typical of normal development.
Many stereotyped and ritualistic behaviours — bedtime routines, lining up toys, “step-on-a-crack” games — are a normal part of child development, which is exactly why parents and teachers find it hard to tell normality from pathology and to decide when to seek specialist consultation. The differential rests on severity, the distress involved and the impact on functioning: developmentally appropriate rituals are flexible, age-typical and untroubling, whereas OCD rituals are rigid, distressing, time-consuming (often more than an hour a day) and impair school, social and family life. Recognition is further complicated because children and adolescents tend to hide their symptoms even from close family members, and often have less insight than adults — they may not recognise their symptoms as problematic.
Differential diagnosis
OCD in children is distinguished from other conditions that share overlapping features.
- Generalised anxiety disorder (GAD): worries in GAD are excessive concerns about real-life circumstances and are not typically neutralised by ritualised compulsions; in OCD, intrusive obsessions are tied to repetitive compulsions performed to reduce anxiety.
- Autism spectrum disorder: restricted, repetitive behaviours in ASD are pervasive, ego-syntonic and part of a broader pattern of social-communication differences; OCD compulsions are usually distressing (ego-dystonic) and performed to relieve an obsession.
- Tic disorders / Tourette’s: tics are sudden, recurrent, non-rhythmic movements or vocalisations preceded by a premonitory urge rather than by an obsessive thought; the distinction matters because tic-like compulsions and tic disorders frequently co-occur with OCD.
Common comorbidities
OCD in childhood frequently co-occurs with other anxiety disorders, with tic disorders and Tourette’s syndrome, and with ADHD. Because these conditions shape both presentation and treatment, assessment should screen for co-occurring anxiety, tics and attention difficulties so that the clinical formulation and treatment plan address the full picture.
Onset, course & epidemiology
OCD is among the more common disorders of developmental age, with onset that may be sudden or gradual.
OCD is one of the most common disorders in developmental age, with prevalence estimates around 1–3% in the literature (figures vary with case definition and method). Onset in childhood can be sudden or gradual; children with a gradual onset tend to present earlier, and symptom types and patterns can change over time. The course varies — some children show a chronic course while others present episodic manifestations — but persistence of the diagnosis, or partial persistence of symptoms, is common. Early recognition is complicated by children concealing symptoms and by limited insight.
Causes & maintaining factors (CBPT conceptualization)
OCD causes are multifactorial — temperamental, environmental and genetic/physiological — while compulsions maintain the anxiety cycle.
Three groups of factors are generally identified. Temperamental factors: higher internalising symptoms, greater negative emotionality and behavioural inhibition in childhood are possible risk factors. Environmental factors: physical and sexual abuse in childhood and other stressful or traumatic events have been associated with increased risk; some children develop a sudden onset of obsessive-compulsive symptoms associated with environmental agents, including a post-infectious autoimmune syndrome. Genetic and physiological factors: the rate of OCD among first-degree relatives of adults with OCD is roughly twice that of relatives of unaffected adults, and increases up to tenfold among first-degree relatives of individuals with childhood- or adolescent-onset OCD; neurobiologically, the cortico-striato-thalamo-cortical circuit appears implicated, with structural neuroimaging anomalies reported in the orbitofrontal cortex, anterior cingulate and striatum.
In the CBPT conceptualization, the obsession–anxiety–compulsion–relief loop is the central maintaining mechanism: compulsions briefly reduce distress and are negatively reinforced, which strengthens the cycle. This is why CBPT — a structured, brief, goal-oriented therapy — targets that mechanism directly, helping the child face feared thoughts without ritualising and build more adaptive responses to the situations that automatically trigger them.
The CBPT treatment protocol
A structured, brief and goal-oriented pathway for delivering cognitive behavioral therapy for OCD through play: from shared therapeutic goals, through the child’s five-phase work with exposure and response prevention, to the parallel parent-training track and the change clinicians can expect to see.
Therapeutic goals
CBPT is well suited to OCD treatment because it teaches the child to face intrusive thoughts without ritualising.
In CBPT, goal-setting is shared with the child and family. The aim is to teach skills that help the child understand, think about, interpret and respond effectively to events — escaping the negative thought-and-behaviour patterns that drive OCD. In the context of obsessive-compulsive disorder, the protocol generally pursues:
- developing emotion-regulation capacities;
- direct teaching of anxiety-management and self-regulation techniques;
- developing problem-solving skills;
- psychoeducation for both parents and child.
Crucially, both parents and child should start from the awareness that the child is not responsible for the disorder, that symptoms are separate from who the child is, and that all stakeholders — parents, teachers and therapists — share responsibility for addressing the current struggles.
Working with the child — phase by phase
The intervention is organised into five sequential phases, from orientation to follow-up.
Orientation Phase
The initial phase of CBPT places significant emphasis on preparing both the child and the parents. An initial meeting between therapist and parents — without the child — reviews the child’s history and background in detail and lets parents share their perception of the problem. The therapist helps parents prepare the child for the first session and explains the ongoing role of parents and other significant adults across assessment and treatment. Although attention is focused on the child, the therapist continues to interact regularly with parents to offer support and evaluate progress toward therapeutic goals.
Assessment Phase
This phase collects the information needed to establish shared, goal-oriented therapy targets. Beyond interviews with parents, structured observation of the child’s play is a key element. Tools include questionnaires administered to parents, assessment of the child’s play, assessment of family play, a puppet sentence-completion task that lets the child reveal thoughts and feelings indirectly, and other measures personalised by the therapist. A baseline for the frequency of the child’s obsessive statements and compulsive behaviours allows change to be evaluated objectively over treatment, and feeds directly into case conceptualisation.
Case Conceptualization Phase
CBPT analyses the data gathered during assessment to plan effective treatment and provide a logical structure for developing and achieving goals. It begins by explaining OCD and analysing individual, relational and environmental factors related to the parents’ concerns, examining the child’s emotions, thoughts, physical sensations and coping strategies, alongside the protective, risk and maintaining factors that sustain the obsession–compulsion cycle.
Intervention Phase
This phase uses CBT techniques to help the child with OCD develop more adaptive responses to problems, situations and stressors, emphasising adaptive thoughts and behaviours. The core mechanism is exposure and response prevention (ERP) — the child gradually faces feared thoughts and triggers while resisting the urge to ritualise — woven into play. Methods include modeling, role-playing, bibliotherapy, generalization and relapse prevention; traditional cognitive techniques are adapted through play tools such as drawing and expressive arts, therapeutic storytelling and puppets that face similar situations, with explicit work on generalising learned behaviours to other contexts. Regular parent meetings continue to monitor progress and intervene in parent–child interactions.
Conclusion Phase
Both child and family are actively involved in the final phase. The child addresses feelings related to ending therapy while the therapist highlights the changes achieved and consolidates learning. Final sessions may be spaced from weekly to biweekly or monthly, helping the child perceive their ability to manage life without the therapist. Positive reinforcement is provided for progress between sessions and the separation is normalised. Follow-ups are scheduled at 3, 6, 12 and 24 months to verify the effectiveness of the intervention.
Learn to deliver every phase in session
Master the five-phase clinical sequence with the child — the play-adapted CBT techniques, exposure and response prevention, the in-session sequencing and the assessment battery — under the scientific direction of Maria A. Geraci and Susan M. Knell.
Get the complete in-session protocolThe structured 16-week treatment protocol
For OCD, the protocol after March & Mulle (1995) is typically adapted over roughly 16 weeks.
Each session follows a consistent structure: review of the previous week, reaffirmation of goals, presentation of new information, selection of exposure “targets”, practice of relapse prevention, and assignment of homework for the following week. A common arrangement is:
- Week 1 — establish a neurobehavioural structure;
- Week 2 — make OCD the problem; introduce cartographic metaphors;
- Week 3 — generate a stimulus hierarchy; identify and teach the transition zone;
- Weeks 4–15 — anxiety-management training with graded exposure and response prevention;
- Weeks 1, 6, 12 — parent–child sessions;
- Week 16 — graduation ceremony, with a booster session around week 22.
The intervention is reinforced by a Playbook: a family resource of weekly play-based activities, a copy of the treatment plan and the therapeutic agenda, plus worksheets to monitor obsessive statements and compulsive behaviours and to measure the intensity of intrusive repetitive thoughts. The Playbook becomes the family’s transitional object, carrying therapy skills into the child’s everyday world.
Working with the family — parent training
While the child follows the five-phase CBPT protocol, parents follow a parallel five-phase training programme.
A competence-based pathway brings parents into the playroom to shape adaptive behaviours.
Parent Training is a competence-based intervention model that assumes families are capable of managing the problem, that every family has strengths, and that parents can learn new skills. Integrated into CBPT, it brings parents into the playroom to observe and progressively implement interventions that shape adaptive behaviours in the presence of the therapist, aiming to modify relational styles and attitudes that negatively affect children’s behaviour.
Parents are taught to understand the factors contributing to the child’s symptoms, the cues and events that trigger mood changes, and behaviour-management strategies that enhance self-esteem rather than shame the child — alongside the principles of a collaborative problem-solving approach (Greene) that respects both the parent’s and the child’s point of view.
Through this approach, parents have the opportunity to:
- Learn new skills.
- Acquire and practise specific techniques.
- Receive individualised, ongoing feedback from the therapist to increase their awareness.
- Interpret more accurately their children’s emotions, concerns and communication expressed through play.
This program, called PARENT TRAINING CBPT, follows an integrated and innovative approach. Although the primary work is with the child, periodic meetings with parents are essential during both assessment and treatment: this pathway runs parallel to the child’s therapy, emphasising the role parents play in influencing maladaptive behaviours. Parents are encouraged to reinforce adaptive child behaviours so treatment continues outside the therapy setting (using appropriate reinforcement for adaptive behaviours and extinction for maladaptive ones).
The parent-training pathway — five phases
Assessment
The problem is analysed, parenting style is adapted and therapeutic goals are defined. Parents receive information about the causes and consequences of their child’s dysfunctional behaviours and learn to establish clear, consistent rules.
Learning
This phase teaches the new skills needed to support change. Parents learn and practise specific techniques through role-play sessions in which the therapist acts as the child. Key targets include:
- mastery of prerequisites;
- modeling of skills;
- role-playing;
- errorless learning;
- successive approximations (shaping);
- feedback (verbal and social reinforcers, token economy);
- repeated practice.
Practice
Parents carry out play sessions with their own children to apply the skills learned, recognising and preventing situations that trigger difficult behaviours and using consistent problem-solving strategies across contexts. After initial practice with the therapist, parents begin to run individual play sessions under supervision.
Review
Parents discuss at length with the therapist the home play sessions to learn how to generalise what they have learned. Strengths and any problems are reviewed; the therapist helps generalise the interventions and parenting skills acquired. Each week, time is dedicated to applying techniques in everyday life and homework is assigned to practise the strategies.
Conclusion
Reached when therapeutic goals have been met and parents have achieved a satisfactory level of competence in play activities and parenting skills. Therapy is tapered gradually, reducing session frequency to every other week, then monthly, and so on.
Objectives of parent training — specific goals
This program helps parents interact effectively with their child by developing functional behavioural and communicative habits and techniques, removing the conditions that give rise to problem behaviours and replacing them with adaptive, socially desirable conduct.
Understanding behaviour
Increase understanding of the child’s problematic behaviour.
Realistic expectations
Set more realistic expectations.
Warmth & acceptance
Increase warmth, trust and acceptance toward the child.
The value of play
Recognise the importance of interaction through play.
Effective communication
Communicate more effectively with their children.
Parental confidence
Develop greater confidence and reduce frustrations experienced with their children.
Patience
Cultivate greater patience to create more realistic expectations.
Self-understanding
Discuss personal reactions with the therapist to understand their own feelings and behaviours.
Problem solving
Become effective problem solvers of family conflicts and develop stronger motivation for change.
The course includes the full parent-training pathway
Deliver the integrated parent-training track alongside the child’s protocol — the five parent-track phases, the competence-based model and the Playbook structure that carries change beyond the playroom.
Start the OCD in Children courseWhat change looks like
As the child learns to face intrusive thoughts without ritualising, compulsions loosen their grip.
Through exposure and response prevention delivered in play, the child learns that anxiety subsides without performing the compulsion, and the obsession–compulsion loop weakens. As emotion-regulation and problem-solving skills grow — and with parents supported throughout — progress reaches beyond the therapy room into school and everyday life, with follow-ups confirming that the gains hold.
Train in the full assessment-and-treatment protocol for OCD in children.
Train in the CBPT protocol — OCD in Children courseOCD & CBPT: clinical FAQ
What is the evidence base for CBPT in childhood OCD?
Cognitive Behavioral Play Therapy applies empirically supported cognitive-behavioral techniques — psychoeducation, cognitive restructuring, modeling, reinforcement and, centrally, exposure and response prevention (ERP) — within a developmentally appropriate play framework, consistent with the DSM-5-TR conceptualisation of OCD as an obsessive-compulsive and related disorder. The protocol commonly adapts the March & Mulle (1995) structured approach across roughly 16 weeks. The CBPT OCD course details the protocol and its clinical rationale under the scientific direction of Maria A. Geraci and Susan M. Knell.
Is CBT with exposure and response prevention first-line for paediatric OCD?
CBT incorporating exposure and response prevention is widely regarded in the clinical literature as a first-line psychological treatment for OCD in children and adolescents. CBPT delivers that ERP mechanism in a play-based, developmentally calibrated way: rather than expecting a young child to tolerate exposure verbally, the therapist builds a stimulus hierarchy and works through it with drawing, storytelling and puppet play. The course walks through how exposure targets are selected and sequenced session by session.
How is exposure delivered through play with a young child?
Exposure is graded and embedded in play. After generating a stimulus hierarchy and teaching the child to recognise the “transition zone”, the therapist uses cartographic metaphors (externalising and “making OCD the problem”), therapeutic storytelling, drawing and puppets that face similar fears so the child can rehearse facing an intrusive thought without performing the compulsion. Each session reviews the prior week, sets exposure targets, practises relapse prevention and assigns Playbook homework, so gains generalise to home and school.
Which assessment tools are used before treatment?
The assessment phase combines parent interviews, structured observation of the child’s play, assessment of family play, parent questionnaires and a puppet sentence-completion task, plus measures personalised by the therapist. A behavioural baseline of obsessive statements and compulsive behaviours — and tools to gauge the intensity of intrusive repetitive thoughts — is established so change can be tracked objectively across treatment. The training provides the assessment battery and scoring guidance.
How is family accommodation addressed in the protocol?
Parents follow a parallel competence-based training pathway: they learn to reduce accommodation of rituals, to reinforce adaptive behaviours and apply extinction to maladaptive ones, and to run supervised play sessions, so gains generalise beyond the therapy room. A Playbook of weekly activities, worksheets and the treatment plan turns the family into a transitional support for ERP, while regular therapist–parent meetings and a collaborative problem-solving stance keep accommodation in check without shaming the child.
What clinical training is required to deliver the CBPT OCD protocol?
Delivering the protocol competently requires structured training in the CBPT model: the five-phase clinical sequence, exposure and response prevention adapted through play, the assessment battery, the 16-week structured protocol and the integrated parent-training pathway. The CBPT Research Center’s OCD in Children course, under the scientific direction of Maria A. Geraci and Susan M. Knell, provides this clinician-level training with the full in-session protocol.
Train in the full protocol
Master the complete CBPT assessment-and-treatment protocol for childhood OCD — five clinical phases, exposure and response prevention through play, and the parent-training pathway.
Enrol in the OCD in Children courseBibliography
The clinical framework, assessment battery and phase-by-phase protocol described above are grounded in the CBPT literature and in DSM-5 / DSM-5-TR, under the scientific direction of Maria A. Geraci and Susan M. Knell.
- American Psychiatric Association (2022). Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR).
- Favaro, A., & Sambataro, F. (2021). Manuale di psichiatria. Piccin.
- Geraci M. A. (2022). La play therapy cognitivo-comportamentale. Armando Editore. Roma
- Geraci M. A. (2023). Comprendere il mondo dei bambini giocando. Armando Editore. Roma
- Geraci M. A. (2024). Il mondo della dottoressa Lulù. Collana Amazon - CBPT Books.
- Greene, R. W. (2014). The Explosive Child (collaborative problem-solving approach).
- Knell S. M. (1993). Cognitive Behavioral Play Therapy. J. Aronson.
- March, J. S., & Mulle, K. (1995). OCD in Children and Adolescents: A Cognitive-Behavioral Treatment Manual. Guilford Press.
CBPT Research Center — Training Programme
Professional Training in CBPT for Obsessive Compulsive Disorder
The CBPT Research Center develops and delivers evidence-based postgraduate training for psychologists, psychotherapists and clinical specialists. Our certified curriculum includes a dedicated module on the CBPT approach to Obsessive Compulsive Disorder, grounded in peer-reviewed research and clinical practice.
View the training curriculumThe in-session protocol
Skills you can apply in session — under the scientific direction of Susan M. Knell, originator of CBPT.