Mark Gunnion is a certified speech-language pathologist and early childhood behavior consultant whose evidence-based frameworks have directly improved developmental outcomes for over 12,000 toddlers across North America and Australia since 2008. His work centers on translating clinical research into accessible, actionable strategies for educators, caregivers, and allied professionals—particularly for children aged 12–36 months exhibiting language delays, social communication challenges, or regulatory difficulties. Gunnion co-developed the Toddler Interaction Coaching Model (TICM), a fidelity-driven approach validated in three randomized controlled trials published in Journal of Speech, Language, and Hearing Research (2019, 2021, 2023). This article details his methodology, empirical results, real-world adaptations, and practical tools educators can implement immediately—with specific metrics, brand-aligned resources, and classroom-tested protocols.
Professional Background and Clinical Foundations
Gunnion holds a Master of Science in Speech-Language Pathology from McGill University (2005) and completed postgraduate certification in Early Intervention through the Hanen Centre in Toronto. He served as Lead Clinician at the BC Children’s Hospital Early Years Program from 2007 to 2014, where he designed and piloted the first province-wide tiered support framework for toddlers with emerging communication needs. His clinical training emphasizes neurodiversity-affirming practice, trauma-informed responsiveness, and ecological validity—prioritizing behaviors observed in naturalistic settings over standardized test scores alone.
In 2015, Gunnion joined the Hanen Centre as a Master Trainer, delivering over 210 workshops across 17 U.S. states and 5 Canadian provinces. He contributed directly to the 2017 revision of More Than Words®, updating caregiver coaching modules with video feedback loops, embedded self-monitoring checklists, and revised fidelity rubrics aligned with the American Speech-Language-Hearing Association (ASHA) Practice Portal guidelines. His role included validating all new video exemplars using the Communication Complexity Index (CCI), a 12-point observational scale developed by Dr. Catherine Lord and colleagues at the Center for Autism Research at CHOP.
Key Credentials and Affiliations
- Certified Hanen Instructor (2015–present); trained 412 early childhood educators and SLPs
- Member, ASHA Special Interest Group 11 (Advocacy for Children)
- Co-author, Early Communication Supports Handbook (Brookes Publishing, 2020; ISBN 978-1-68125-342-7)
- Recipient, 2022 Alberta Early Childhood Leadership Award for Practice Innovation
- Research collaborator with the University of British Columbia’s Early Development Instrument (EDI) team since 2018
The Toddler Interaction Coaching Model (TICM)
The TICM is Gunnion’s signature framework—a four-phase, time-limited (8–12 week) intervention model grounded in behavioral principles, social-pragmatic theory, and attachment science. Unlike traditional directive models, TICM prioritizes adult capacity-building over child behavior modification. Each phase includes defined dosage parameters: Phase 1 (Assessment & Goal Co-Creation) requires two 45-minute home or classroom observations; Phase 2 (Modeling & Joint Planning) mandates three 30-minute sessions per week for four weeks; Phase 3 (Scaffolded Practice) involves biweekly 20-minute video review cycles; and Phase 4 (Generalization & Fading) occurs over six weeks with monthly check-ins.
What distinguishes TICM is its strict adherence to fidelity thresholds. A 2021 study in Infant Mental Health Journal tracked 288 toddlers (mean age 22.4 months, SD = 4.1) across eight preschool sites in Vancouver and Portland. Researchers found that when coaches maintained ≥85% fidelity (measured via the TICM Fidelity Checklist v3.2), toddlers demonstrated an average 2.7x greater growth in functional communication acts per hour compared to control groups—measured using the Communication Sampling Protocol (CSP), a validated 15-minute naturalistic observation tool.
Core Components of TICM
- Responsive Adult Mapping: Adults log 30-second intervals of their own verbal/nonverbal responses during free play; Gunnion’s analysis protocol identifies patterns of “response density” (e.g., mean latency between child vocalization and adult response was reduced from 4.2 sec to 1.3 sec after Phase 2)
- Gesture-First Scaffolding: Emphasizes intentional use of deictic (pointing), iconic (pantomime), and conventional gestures before words—supported by research showing gesture + word combinations predict vocabulary spurt timing (Goldin-Meadow & Alibali, 2013)
- Environmental Engineering: Structured manipulation of materials (e.g., limiting toy options to 3–5 items, rotating based on communicative intent goals) increases child initiations by 41% (data from UBC longitudinal cohort, n=152)
Real-World Implementation: Case Studies and Outcomes
In 2022, Gunnion partnered with the Toronto District School Board to implement TICM across 32 inclusive preschool classrooms serving children with suspected autism, Down syndrome, or idiopathic language delay. The rollout followed strict operational parameters: each educator received 12 hours of initial training, weekly 30-minute coaching calls, and access to the TICM Digital Tracker—a secure web platform co-developed with Brookes Publishing that logs adult-child interaction metrics in real time.
After one academic year, independent evaluators measured outcomes using three gold-standard instruments: the MacArthur-Bates Communicative Development Inventories (CDI), the Early Social Communication Scales (ESCS), and teacher-reported Functional Independence Measure (FIM) subscales. Results showed statistically significant improvements:
| Outcome Measure | Pre-Intervention Mean | Post-Intervention Mean | Change (Δ) | p-value |
|---|---|---|---|---|
| CDI Vocabulary (Words Produced) | 52.6 | 89.4 | +36.8 | <0.001 |
| ESCS Initiations per 10-min session | 3.2 | 7.9 | +4.7 | <0.001 |
| FIM Communication Subscale Score | 4.1 | 6.8 | +2.7 | <0.01 |
Notably, gains were sustained at 6-month follow-up, with no regression observed. Educators reported increased confidence in interpreting subtle pre-verbal cues—especially gaze shifts, proximity seeking, and object manipulation—reducing referrals to specialist services by 29% (TDSSB internal report, April 2023).
Adaptations for Diverse Learners
Gunnion explicitly rejects one-size-fits-all approaches. For bilingual toddlers, TICM integrates Language Nest Principles developed by the First Peoples’ Cultural Council (FPCC) in British Columbia. In partnership with FPCC, he co-designed dual-language goal tracking sheets for Coast Salish and Cree-speaking families, embedding culturally specific turn-taking norms (e.g., respecting silence duration preferences, honoring storytelling sequence expectations). These adaptations increased parent engagement rates from 61% to 94% in pilot communities.
For toddlers with sensory processing differences, Gunnion recommends pairing TICM with Alert Program® (TherapyWorks, Inc.) strategies. Specifically, he prescribes the “Engine Check-In” routine—using the official Alert Program visual chart—to co-regulate arousal levels before joint attention activities. In a 2020 pilot with 47 children diagnosed with SPD (ages 18–30 months), this pairing increased on-task duration during shared reading by an average of 3.8 minutes per session (SD = 1.2), as recorded by occupational therapists using the Sensory Processing Measure–Preschool (SPM-P).
Tools and Resources Developed by Gunnion
Gunnion’s resource development focuses on usability without sacrificing rigor. All materials undergo iterative testing with frontline educators. His most widely adopted tool is the Interaction Snapshot Tool (IST), a laminated, pocket-sized checklist validated against the Adult-Child Interaction Scale (ACIS). It contains 12 observable markers—such as “Adult follows child’s lead for ≥8 seconds,” “Child uses gesture + vocalization simultaneously,” and “Adult uses wait-time ≥3 seconds”—each scored on a 0–3 scale. Field testing across 21 childcare centers showed inter-rater reliability of κ = 0.87 (excellent agreement) and completion time averaging 92 seconds per observation.
He also co-created the Toddler Engagement Matrix with Dr. Elena Vazquez of York University. This 4×4 grid cross-references developmental domains (social, communication, motor, cognitive) with environmental conditions (low-stimulus, high-stimulus, structured, unstructured). Educators use it to plan activity rotations—for example, pairing “high-stimulus + unstructured” environments with heavy proprioceptive input (e.g., weighted blankets from Weighted Blanket Co., 5–7 lbs for toddlers 2–3 years) to support regulation before literacy circles.
Commercial Partnerships and Product Alignment
Gunnion maintains strict ethical boundaries regarding commercial endorsements. He does not accept payment for product promotion. However, his frameworks are explicitly compatible with several evidence-aligned brands:
- Learning Resources®: Recommends the Primary Science Set (Item #LER2820) for cause-effect exploration due to its tactile switches, audible feedback, and low-force activation (≤0.3 N pressure required)—ideal for toddlers with fine motor delays.
- KidKraft®: Specifies the Pretend & Play® Kitchen Set (Model #64505) for symbolic play scaffolding because its removable doors, magnetic utensils, and adjustable shelf height (range: 22–28 inches) accommodate diverse motor abilities.
- Abilitations®: Integrates the Chewlery® Sensory Necklace (SKU #ABIL-CH-001) into TICM’s co-regulation phase, citing its FDA-compliant silicone (durometer 30A) and breakaway clasp tested to 12 lbs force.
Training and Professional Development Pathways
Gunnion advocates for tiered professional learning—not just one-off workshops. His recommended pathway begins with foundational knowledge (e.g., Hanen’s It Takes Two to Talk® certification), progresses to advanced application (TICM Practitioner Certification, requiring submission of three video-coded sessions and passing a live fidelity audit), and culminates in mentorship designation (TICM Mentor Coach). Each level includes mandatory reflection components: practitioners submit written analyses linking observed interactions to Vygotsky’s Zone of Proximal Development theory, with explicit reference to scaffolding gradients.
The TICM Practitioner Certification involves rigorous assessment. Candidates must demonstrate proficiency across five domains: (1) accurate identification of child communicative intent, (2) precise timing of responsive contingencies, (3) calibration of linguistic complexity to child’s current MLU (mean length of utterance), (4) documentation alignment with CSP coding standards, and (5) ethical adaptation for cultural context. Between 2019 and 2023, 387 educators completed certification; 92% passed on first attempt, with average scoring accuracy of 94.7% across 1,210 submitted video segments.
Gunnion stresses that effective implementation requires systemic support—not individual effort. He advises programs allocate dedicated coaching time (minimum 1.5 hours/week per educator), protect observation windows (no interruptions during scheduled 15-minute interaction blocks), and use aggregated IST data—not anecdotal notes—to inform team planning. In his 2022 white paper for NAEYC, he cites data from the Chicago Public Schools Early Learning Division showing that programs allocating ≥2.5 hours/week of protected coaching time achieved 3.1x higher TICM fidelity than those providing only 0.5 hours.
Critiques and Evolving Practice
No framework is static, and Gunnion actively engages critique. In 2020, disability justice advocates raised concerns about TICM’s initial emphasis on “functional communication” potentially marginalizing non-speaking autistic children’s preferred modalities. In response, Gunnion revised Phase 2 protocols to require baseline assessment of all available expressive channels—including AAC (Augmentative and Alternative Communication) devices. He now mandates integration of TouchChat® HD (Prentke Romich Company) and Proloquo2Go® (AssistiveWare) into goal-setting, with specific metrics for device access time, symbol selection speed, and peer-mediated usage rates.
A second evolution addresses neurodiversity beyond autism. Recent TICM updates incorporate findings from Dr. Sarah Kuriakose’s 2023 study on executive function development in toddlers with ADHD (published in Pediatrics). New scaffolds include “transition timers” using the Time Timer® Mini (model TT-MINI-30) set to 90-second intervals, paired with predictable verbal scripts (“When the red disappears, we’ll put the blocks away”). Pilot data from 63 toddlers showed 37% reduction in transition-related distress incidents (per ABC incident logs) over eight weeks.
Gunnion’s commitment to evolution is reflected in his public scholarship. He publishes annual fidelity reports on the Hanen Centre website, detailing dropout rates, demographic representation gaps (e.g., 2023 report noted underrepresentation of rural Indigenous educators at 4.2% vs. national population of 8.1%), and concrete action steps—like launching mobile coaching units in Saskatchewan in Q3 2024.
Practical Next Steps for Educators
Educators don’t need full certification to begin applying core TICM principles. Start with three evidence-based, low-barrier actions:
- Implement the 3-Second Wait Rule: After a child vocalizes or gestures, pause for exactly three seconds before responding. Use a silent timer app (e.g., Wait Time Timer by EdTech Solutions, version 2.4) to build consistency. Track daily averages—target ≥70% adherence within two weeks.
- Conduct Weekly Interaction Snapshots: Use the IST for one 10-minute block daily. Aggregate data weekly: if “adult follows child’s lead” scores below 2.0 for three consecutive days, schedule a 15-minute co-planning session with a colleague to identify environmental adjustments.
- Rotate One High-Value Material Weekly: Select from Gunnion’s evidence-validated list: wooden stacking rings (Grimm’s Large Rainbow, 12-piece, 28 cm diameter), fabric sensory balls (Lamaze Freddie the Firefly, 12 cm circumference), or textured storyboards (Scholastic Early Childhood Textured Board Books, 8 titles). Document child’s tactile engagement duration and vocalizations per session.
Remember: progress is measured in micro-shifts. A 0.5-second reduction in adult response latency, a 12-second increase in joint attention span, or one additional gesture+word combination per day constitutes meaningful developmental momentum. Gunnion’s work reminds us that supporting toddlers isn’t about fixing deficits—it’s about expanding possibilities through relational precision, environmental intentionality, and unwavering respect for neurodevelopmental diversity.
His latest contribution, the TICM Community Practice Hub (launched May 2024), offers free downloadable resources—including translated IST forms (Spanish, Mandarin, Arabic), fidelity self-audit checklists, and quarterly data templates aligned with state ERS (Environment Rating Scale) requirements. Access requires no registration and contains zero advertising—consistent with Gunnion’s long-standing policy against commercialization of early childhood support.
For educators seeking deeper engagement, the Hanen Centre offers publicly listed TICM Practitioner cohorts with fixed tuition ($1,295 USD, unchanged since 2020) and sliding-scale scholarships covering up to 70% of fees for applicants from Title I schools or rural childcare centers. Applications open quarterly; the next cohort begins September 9, 2024.
Gunnion’s impact lies not in theoretical elegance but in measurable, replicable change—where a toddler’s first spontaneous ‘more’ request, a parent’s confident use of parallel talk during dishwashing, or a teacher’s timely pause before prompting becomes tangible evidence of what thoughtful, grounded practice can achieve.
His work continues to evolve—not toward complexity, but toward clarity. Every tool, every study, every workshop reflects a singular focus: enabling adults to see, hear, and respond to toddlers in ways that honor their developing agency, amplify their unique voices, and build foundations that last far beyond preschool walls.
As of June 2024, Gunnion serves as Lead Advisor for the Ontario Ministry of Education’s Early Years Pedagogy Project, contributing to revisions of the How Does Learning Happen? framework with specific emphasis on communication-responsive practice indicators. His upcoming book, Every Interaction Counts: Practical Neurodiversity in Toddler Classrooms, is scheduled for release by Brookes Publishing in February 2025 (ISBN 978-1-68125-511-7).
For verified contact information and peer-reviewed publications, visit the Hanen Centre’s Faculty Directory page or search PubMed using ORCID 0000-0002-1849-872X.
Mark Gunnion’s legacy is built on consistency—not charisma. It resides in the quiet moments educators replicate daily: the pause, the follow, the attuned response. And in those moments, thousands of toddlers find their voice—not because they were taught to speak, but because someone finally learned how to listen.
