From Physical Responses to Functional Communication: Navigating Transitions
When a young boy's physical responses spiked during a staff transition, it reminded us of a core truth: trust and co-regulation must always come before demands. Susmita Das, IBA · QASP-S · 20 May 2026
All names, ages, and identifying details in this case study have been changed or composited from multiple cases. This content is for educational purposes only. It does not constitute clinical advice and does not establish a clinical relationship.
The Challenge
We start with strengths, then name the barriers, then share why therapy began.
Strengths First
Rohan brought age-appropriate attention skills, strong visual-perceptual abilities, and a clear interest in sensory play.
Barriers
Because sign manding was still emerging, he often used physical responses like shouting, grabbing hands, and table banging to express needs.
Therapy Motivation
The family wanted safer, more reliable ways for him to communicate needs during transitions and demands.
Our Approach
Clear, compassionate methods guided by FBA insights.
FBA Findings
FBA showed the behaviors served attention and escape functions, not non-compliance.
Guiding Philosophy
Behavior is communication, and trust comes before demands.
Methods We Used
- Functional Communication TrainingTaught sign manding for highly motivating items to replace physical responses.
- Assent-based Co-RegulationHonored distress cues, avoided forced eye contact, and prioritized calming before demands.
- Motivating Play-Based TeachingUsed sensory play and preferred items to build engagement and trust.
Session Structure
Sessions blended play-based engagement with short teaching bursts, then practice across routines and transitions.
Progress at a Glance
A clear view of behavior change, context, and timelines.
Crying / Tantrums
resolvedSitting on floor
resolvedNipping / Shouting
spikeSign Manding
improvingBehavior Function
Timeline
- Week 2Crying and floor dropping fell to zero.
- Month 3Spontaneous eye contact emerged with sign manding.
- Month 5Staff transition caused a temporary spike in physical responses.
- Month 6Stability returned with consistent co-regulation.
Why It Matters
When routines or people change, behavior can spike even with strong skill gains. Rebuilding trust stabilizes learning.
Spike Note
The spike in month 5 aligned with a staff transition, reminding us that trust must be rebuilt before demands increase.
Outcomes and Impact
Behavioral gains paired with quality of life improvements.
Behavioral Gains
- Crying and floor dropping resolved in sessions.
- Longer engagement with toys and activities.
- Spontaneous eye contact during sign requests.
Quality of Life
- More predictable sessions with fewer distress moments.
- Stronger connection with new staff after trust-building.
- Clearer, calmer communication during transitions.
Ongoing Journey
Continue strengthening trust and expanding functional communication across settings.
"Behavior is always communication, and trust is the prerequisite for learning."
Continue the Journey
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Credentials and Care
Experienced clinicians and trusted certifications.
Susmita Das
International Behavior Analyst (IBA) - QASP-S
16+ years of compassionate, evidence-based ABA supporting families across Kolkata.