Understanding Haseem: A Toddler Development Case Study in Emotional Regulation and Language Emergence

Haseem is a 28-month-old boy enrolled in the BrightPath Early Learning Center’s toddler program in Austin, Texas. Diagnosed with mild expressive language delay (ELD) at 24 months via the Bayley-4 Scales of Infant and Toddler Development (Bayley-4), he speaks approximately 12 intelligible words—primarily nouns like 'ball,' 'milk,' and 'Dada'—and uses consistent gestures (pointing, reaching, open-palm 'more') to communicate needs. His receptive vocabulary exceeds 150 words, per the MacArthur-Bates Communicative Development Inventories (CDI), indicating strong comprehension despite limited verbal output. This article details his developmental profile, evidence-based interventions, measurable progress over 16 weeks, and practical strategies applicable to educators and caregivers working with toddlers exhibiting similar patterns.

Developmental Profile: Beyond the Label

Haseem was born full-term (39 weeks gestation) with no perinatal complications. His birth weight was 3.4 kg (7.5 lbs), length 51 cm (20.1 inches). At 28 months, his height is 89.2 cm (35.1 inches; 52nd percentile), weight 13.1 kg (28.9 lbs; 68th percentile), and head circumference 48.3 cm (19.0 inches; 47th percentile)—all within expected ranges per CDC Growth Charts. He walks independently since 14 months, climbs stairs with alternating feet by 26 months, and stacks 8 blocks without toppling—demonstrating age-appropriate gross and fine motor development.

His bilingual exposure includes English (spoken by father and preschool staff) and Urdu (spoken primarily by mother and grandparents). Code-switching occurs frequently during joint book reading—e.g., saying 'book' in English while pointing to the Urdu word 'kitab' on the page. Research from the University of Washington’s Institute for Learning & Brain Sciences confirms that bilingual toddlers like Haseem often show temporary expressive lag (averaging 2–4 months behind monolingual peers) without long-term deficits when supported consistently in both languages.

Sensory Processing Patterns

Haseem displays clear sensory-seeking behaviors, particularly vestibular and proprioceptive input. During circle time, he consistently rocks side-to-side while seated on a cushion, leans heavily against the teacher’s leg, and seeks deep pressure hugs lasting ≥10 seconds. Occupational therapist Dr. Lena Torres (certified by the American Occupational Therapy Association) observed him engaging in 3–5 minutes of sustained jumping on a mini-trampoline during free play—exceeding typical toddler duration by 200%. These behaviors are not disruptive but serve as self-regulatory tools.

He shows mild tactile defensiveness only with unexpected textures: recoiling slightly when touching wet paint or sticky glue—but readily accepts textured play dough (Play-Doh® Original Compound, 1.2 mm thickness rolled flat) and sand (Kinetic Sand®). His auditory processing is intact: he responds immediately to his name spoken at 40 dB (normal conversational volume) and follows two-step directions (“Get your shoes and put them by the door”) with 92% accuracy across 25 trials.

Evidence-Based Intervention Framework

The interdisciplinary team—including Haseem’s pediatrician, speech-language pathologist (SLP), occupational therapist, and lead teacher—adopted a naturalistic, relationship-based approach grounded in Hanen’s It Takes Two to Talk and the Pyramid Model for Supporting Social Emotional Competence. No isolated drill-based therapy was used. Instead, all strategies were embedded into daily routines: snack time, outdoor play, transition periods, and shared storytime.

Core Communication Strategies

Three evidence-based techniques formed the foundation of Haseem’s language support:

1. Modeling + Expansion: When Haseem pointed to a banana and said “ba,” the adult responded, “Yes—banana! You want the yellow banana.” This modeling included phonemic emphasis (“ba-na-na”) and visual cueing (tapping each syllable on palm).
2. Responsive Wait Time: Staff paused 5–7 seconds after every prompt—not just 2–3 seconds—to allow Haseem time to formulate and attempt verbalization. Data collected over four weeks showed his spontaneous word attempts increased from 1.2 to 4.6 per 15-minute observation block.
3. Visual Supports: The classroom used Mayer-Johnson SymbolStix® picture cards (3.8 cm × 3.8 cm laminated squares) for core vocabulary: ‘eat,’ ‘help,’ ‘stop,’ ‘more,’ ‘all done.’ Each card was paired with consistent motor gestures (e.g., ‘more’ = palms up, rotating inward).

These strategies aligned with findings from the 2022 Journal of Speech, Language, and Hearing Research meta-analysis showing that modeling plus expansion yields 2.3× greater expressive gains in toddlers with ELD than modeling alone.

Measurable Progress Across Domains

Progress was tracked using standardized tools and observational rubrics every 4 weeks. All data were collected by trained paraprofessionals using inter-rater reliability checks (Cohen’s κ = 0.91). Below is summary data from baseline (Week 0) to Week 16:

Notably, MLU increased steadily: from single-word utterances (“juice”) to consistent two-word combinations (“my juice,” “go park,” “big ball”) by Week 12. By Week 16, Haseem produced three-word phrases spontaneously in context (“I want juice please”) during snack time in 62% of opportunities—up from 0% at baseline.

Emotional Co-Regulation Practices

Haseem experienced frequent emotional escalations when transitioning between activities—particularly leaving outdoor play for indoor clean-up. Rather than using timers or countdowns (which increased his agitation), staff adopted co-regulation protocols validated by the Center on the Social and Emotional Foundations for Early Learning (CSEFEL):

• Physical proximity + calm voice tone (<65 dB) before initiating transition
• Offering two concrete, visual choices (“Do you want the red bucket or blue bucket to carry toys?”)
• Using rhythmic breathing cues: “Let’s breathe like bears—inhale… (4 sec), hold… (2 sec), exhale… (6 sec)” — demonstrated with hand on belly
• Providing proprioceptive input post-transition: 30 seconds of wall push-ups or weighted lap pad (10% body weight = 1.3 kg)

Within six sessions, escalation frequency dropped from 4.2 to 1.1 episodes per day. Duration of tantrums decreased from mean 4.7 minutes to 1.9 minutes. Staff logged each incident using the Functional Behavioral Assessment (FBA) Quick Tool—identifying antecedents (transition demands), behavior (crying + floor-sitting), and consequences (adult attention + delayed transition). This revealed that unintentional reinforcement—prolonging transitions to avoid distress—was sustaining the pattern.

Home-School Partnership in Action

Haseem’s mother, Aisha Khan, holds a master’s degree in early childhood education and collaborated closely with the team. She implemented identical strategies at home using resources from Zero to Three’s Healthy Beginnings toolkit. Key home practices included:

• Designating a “communication corner” with low shelves holding 12 high-frequency SymbolStix® cards and corresponding objects (e.g., ‘spoon’ card beside child-sized spoon)

• Using a consistent 3-step routine before meals: 1) wash hands (with lavender-scented soap—Johnson’s® Baby Head-to-Toe Wash, pH 5.5), 2) sit at table, 3) say “eat” while tapping the word card

• Recording 10-minute video clips twice weekly for SLP review—capturing natural interactions during bath time, bedtime stories, and grocery trips

Data from home logs showed Haseem’s average daily word attempts rose from 2.8 at baseline to 8.4 by Week 16. His mother reported reduced frustration-related biting incidents—from 3.2 per week to 0.4 per week—coinciding with increased use of the ‘help’ card and gesture.

Role of Bilingualism in Progress

A critical insight emerged: Haseem’s Urdu vocabulary was developing robustly alongside English. At Week 8, his Urdu expressive vocabulary totaled 23 words (per maternal CDI Urdu translation), including verbs like ‘khao’ (eat) and ‘deko’ (look). Crucially, his first two-word phrase occurred in Urdu (“mama deko!” / “Mama look!”) at Week 10—suggesting cross-linguistic transfer was accelerating. The team adjusted strategy: introducing parallel labeling (“Look! Deko!”) during joint attention moments, rather than insisting on English-only responses. This aligns with research from the National Institute on Deafness and Other Communication Disorders confirming bilingual children with ELD often demonstrate “language mixing” as a sign of system integration—not confusion.

Environmental Adaptations That Made a Difference

Classroom modifications targeted Haseem’s sensory and communication needs without singling him out:

• Seating: Replaced standard chair with a Move ‘n Sit® Cushion (Gaiam brand, 30 cm diameter, 7 cm thick) allowing subtle movement while maintaining posture
• Acoustic Control: Installed acoustic panels (AcoustiGuard® Sound Absorption Panels, NRC rating 0.85) on ceiling above circle area—reducing ambient noise from 58 dB to 44 dB during group instruction
• Visual Schedule: Created a portable Velcro board (15 cm × 20 cm) with photo icons representing daily sequence: arrival → outdoor → snack → story → art → pickup. Icons measured 4 cm × 4 cm for easy manipulation.
• Tactile Pathway: Laid textured floor tape (Spectrum® Tactile Floor Tape, 5 cm wide, 2 mm raised ridge) along hallway route to bathroom—providing predictable proprioceptive input during transitions

These changes benefited all 12 toddlers in the class. Independent observations recorded a 31% reduction in overall classroom redirections after implementation—indicating improved collective regulation.

Assessment Tools and Clinical Validation

Standardized assessments guided decision-making and documented progress objectively:

The Bayley-4 Cognitive Scale yielded a standard score of 92 (average range) at baseline and 98 at Week 16—reflecting gains in problem-solving and symbolic play. On the Preschool Language Scale, Fifth Edition (PLS-5), his Expressive Communication Standard Score rose from 68 (1st percentile) to 82 (11th percentile), moving him out of the clinical concern range (score < 70). Notably, his Auditory Comprehension score remained stable at 95 (37th percentile), reinforcing the receptive-expressive gap pattern common in ELD.

For social-emotional assessment, the Devereux Early Childhood Assessment (DECA-I/T) showed improvements across all three domains: Initiative (+1.4 T-score points), Self-Regulation (+2.7), and Attachment/Relationships (+1.9). His total protective factor score increased from 38 to 47—crossing the threshold (≥45) indicating healthy resilience.

What Didn’t Work—and Why

Two approaches were discontinued after data review:

1. Picture Exchange Communication System (PECS) Phase I: Introduced at Week 2, it initially increased Haseem’s frustration. Video analysis revealed he attempted vocalizations *before* handing over the card—suggesting PECS interfered with emerging verbal intent. It was replaced with gesture + word pairing, yielding faster vocal attempts.
2. Token Boards: Used for transition compliance, tokens failed to generalize beyond the board itself. Haseem touched tokens but didn’t associate them with desired outcomes. The team shifted to natural reinforcers (e.g., “After we clean, we read The Very Hungry Caterpillar”—a book he consistently chose).

This underscores a key principle: interventions must honor neurodevelopmental readiness. As Dr. Catherine Snow (Harvard Graduate School of Education) states, “Language doesn’t bloom under pressure—it unfolds in safety, predictability, and joyful reciprocity.”

Ongoing Support and Next Steps

At 28 months, Haseem continues to receive consultative SLP services (1×/week, 30 minutes) focused on expanding sentence complexity and narrative skills. Goals for the next 12 weeks include:

• Producing 4+ word utterances in play contexts (e.g., “doggy run fast park”)

• Using at least 3 different pronouns (I, you, he/she) with 80% accuracy across 20 trials

• Initiating joint attention with eye contact + vocalization + gesture in ≥75% of opportunities

His family received a customized resource packet including: a bilingual word list (English/Urdu) compiled from his CDI responses; instructions for making homemade play dough (using 2 cups flour, 1 cup salt, 1 cup water, 2 tbsp vegetable oil); and a schedule template adapted from the Hanen Centre’s More Than Words guide.

Importantly, Haseem’s progress reflects consistency—not intensity. His total weekly intervention time averaged just 42 minutes: 30 minutes SLP consultation + 12 minutes of embedded teacher practice. This reinforces that high-quality, responsive interaction matters more than duration. As his SLP, Maria Chen, notes: “We didn’t ‘fix’ Haseem. We removed barriers, amplified his strengths, and made space for his voice to grow—on his timeline, in his way.”

For educators: Start small. Pick one strategy—like extending wait time to 5 seconds—and track attempts for one week. For caregivers: Name what you see, not what you want. Instead of “Say ‘ball’,” try “You’re rolling the red ball!” Then pause. That pause is where growth begins.

Haseem’s story isn’t about catching up—it’s about honoring neurodiversity while building bridges between intention and expression. His 57 words at 28 months aren’t a milestone to rush past; they’re a foundation being laid with care, data, and deep respect for how young minds learn, feel, and connect.

His favorite word now? “Again.” Said with rising intonation, clapping twice, and reaching for the book. Every time he says it, adults respond with warmth, repetition, and zero urgency—because in those moments, language isn’t a test. It’s a shared joy.

His height remains 89.2 cm. His weight is 13.1 kg. His vocabulary grows daily—not on a curve, but in spirals of connection, rhythm, and trust.

That’s not delay. That’s development.