Understanding Dialectical Behaviour Therapy (DBT) and Its Benefits for Individuals with Developmental Disabilities and Challenging Behaviours: A Perfect Fit for Positive Systems Approach!
- drbobcarey
- Jan 20
- 5 min read

Dialectical Behaviour Therapy (DBT) is a widely recognized, evidence-based therapeutic approach designed initially to help individuals with borderline personality disorder (BPD). However, over the years, its application has expanded to address a wide range of mental health challenges, including mood disorders, self-harming behaviours, and difficulties with emotional regulation. One emerging and promising area for DBT’s application is in supporting individuals with developmental disabilities (DD) who exhibit challenging behaviours.
This blog post explores DBT, its relevance to this population, and how its structured approach can make a meaningful difference. We’ll also present a case study to demonstrate its practical application.
What is Dialectical Behaviour Therapy?
DBT is a cognitive-behavioural therapy (CBT) that focuses on balancing acceptance and change. Developed by Dr. Marsha Linehan, DBT is particularly effective for individuals who experience intense emotions and have difficulty regulating them. It combines strategies for validation (acceptance) with skills training to promote meaningful behavioural change.
DBT has four primary skill modules:
Mindfulness – Increasing awareness and focus on the present moment without judgment.
Distress Tolerance – Developing healthy ways to cope with and tolerate distressing situations.
Emotion Regulation – Understanding and managing intense emotions to reduce impulsive behaviours.
Interpersonal Effectiveness – Building effective communication and relationship skills.
These modules provide practical tools that individuals can use to navigate emotional challenges, build resilience, and develop adaptive coping mechanisms.
Why DBT is Beneficial for Individuals with Developmental Disabilities
Individuals with developmental disabilities often face difficulties with emotional regulation, communication, and interpersonal relationships. These challenges can lead to behaviours that are perceived as “problematic” or “challenging,” such as aggression, self-injury, or noncompliance. Traditional behaviour management strategies may focus primarily on reducing the frequency of these behaviours without addressing their underlying causes.
DBT takes a different approach by teaching individuals the skills to:
Understand and regulate emotions: Many challenging behaviours stem from frustration, anxiety, or an inability to express needs effectively. DBT helps individuals recognize these emotions and respond in healthier ways.
Tolerate distress: Rather than reacting impulsively to distress, individuals learn how to manage it in ways that are less harmful.
Communicate effectively: DBT’s focus on interpersonal skills can help individuals express their needs in ways that are more likely to be understood and met.
Adapting DBT for Developmental Disabilities
DBT can be tailored to meet the unique needs of individuals with developmental disabilities.
For example:
Simplifying language and concepts to match cognitive abilities.
Using visual aids, role-playing, or interactive activities to teach skills.
Involving caregivers, family members, and support staff in the therapeutic process to reinforce skills in daily life.
Focusing on concrete, practical applications of DBT skills in real-world scenarios.
Case Study: DBT in Action
Background
Michael is a 23-year-old man with a mild intellectual disability and a diagnosis of autism spectrum disorder (ASD). He has a history of self-injurious behaviour (e.g., hitting his head) and aggressive outbursts, especially in response to frustration or changes in routine. Michael’s behaviour has made it difficult for him to participate in community activities and maintain positive relationships with peers and caregivers.
The Intervention
Michael’s therapist introduced a modified DBT program tailored to his developmental level. The program included weekly one-on-one sessions with Michael, caregiver training sessions, and visual tools to help reinforce the skills.
Mindfulness:
Michael practiced noticing and naming his emotions using a visual emotion wheel. For example, when he felt angry, he learned to identify the physical sensations (e.g., clenched fists, fast heartbeat) and say, “I feel angry.”
Distress Tolerance:
Michael learned a “calm-down plan” using a step-by-step visual guide. When frustrated, he practiced taking deep breaths, squeezing a stress ball, or using a “calming corner” with sensory items.
Emotion Regulation:
The therapist worked with Michael to identify triggers for his frustration, such as sudden changes in plans. Together, they created a “coping kit” that included fidget toys, a schedule card, and a list of positive self-statements.
Interpersonal Effectiveness:
Michael practiced asking for help using simple, direct statements. Role-playing scenarios with his therapist helped him build confidence in asserting his needs without resorting to aggressive behaviours.
The Outcome
After six months of DBT-based intervention, Michael’s self-injurious behaviours significantly decreased, and his ability to tolerate frustration improved. He began using his calm-down plan independently when upset and reported feeling proud of his ability to “stay calm.” Caregivers noted an improvement in Michael’s ability to express his needs and manage transitions, leading to more positive interactions with peers and family members.
Perfect Fit with Positive Systems Approach (PSA)
Dialectical Behaviour Therapy (DBT) and the Positive Systems Approach (PSA), as outlined by Dr. Bob Carey and Terry Kirkpatrick in their book Managing Disruptive Behaviours with a Positive Systems Approach (available on Amazon) both emphasize holistic, person-centered strategies for managing challenging behaviours.

The synergy between DBT and PSA can be understood through several key alignments:
1. Holistic and Systemic Perspective
PSA integrates principles from applied behaviour analysis, systems theory, and strength-based practices, recognizing that individual’s function within complex systems, including family, community, and societal contexts. Similarly, DBT acknowledges the multifaceted nature of behaviour, considering emotional, cognitive, and environmental factors. Both approaches advocate for comprehensive assessments to understand the root causes of behaviours, rather than focusing solely on the symptoms.
2. Emphasis on Skill Development
A core component of PSA is teaching alternative skills to replace disruptive behaviours, empowering individuals to manage their actions more effectively. DBT aligns with this by offering structured modules in mindfulness, distress tolerance, emotion regulation, and interpersonal effectiveness. By equipping individuals with these skills, both approaches aim to reduce maladaptive behaviours and promote adaptive functioning.
3. Strength-Based and Positive Reinforcement
PSA focuses on identifying and building upon an individual's strengths, utilizing positive reinforcement to encourage desired behaviours. DBT also incorporates positive reinforcement, especially in reinforcing the use of newly acquired skills. This positive focus fosters a supportive therapeutic environment, enhancing motivation and engagement in the therapeutic process.
4. Collaborative and Person-Centered Approach
Both PSA and DBT emphasize collaboration between the therapist and the individual. In PSA, understanding the individual's unique context and involving them in the development of intervention strategies is crucial. DBT mirrors this by encouraging individuals to actively participate in their therapy, setting personal goals, and working jointly with therapists to achieve them.
5. Focus on Environmental Modifications
PSA acknowledges the significant impact of environmental factors on behaviour, advocating for modifications in the individual's surroundings to support positive behavioural changes. DBT also considers environmental influences, encouraging individuals to structure their environments in ways that reduce triggers and support the use of adaptive skills.
In summary, the integration of DBT within a Positive Systems Approach offers a comprehensive framework for addressing challenging behaviours. By combining DBT's structured skill development with PSA's holistic, strength-based perspective, practitioners can create individualized interventions that promote lasting behavioural change and enhance overall quality of life.
Final Thoughts
DBT offers a compassionate and skill-based approach to addressing the complex needs of individuals with developmental disabilities. By focusing on emotional regulation, distress tolerance, and effective communication, DBT empowers individuals to take an active role in managing their behaviours and improving their quality of life.
For families, caregivers, and professionals working with this population, DBT represents a promising framework for fostering understanding, growth, and resilience. If you or someone you support could benefit from DBT, consider reaching out to a mental health professional with experience in adapting DBT for developmental disabilities.
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