Leliana: A Developmental Deep Dive for Early Childhood Educators and Toddler Behavior Consultants

Leliana is a 27-month-old bilingual toddler whose developmental journey offers rich, actionable insights for early childhood educators and behavior consultants. She speaks approximately 22 expressive words in English and 18 in Spanish, uses consistent gestures (e.g., tapping chest for 'mine', open palms up for 'more'), and demonstrates strong receptive language—understanding over 200 words in both languages per the MacArthur-Bates Communicative Development Inventories (CDI). Her sensory profile includes tactile defensiveness (avoids grass, resists sock changes), vestibular seeking (spins 3–5 times daily without dizziness), and auditory sensitivity to high-frequency sounds (>4,000 Hz), measured using the Sensory Processing Measure–Toddler (SPM-T), where she scored 82nd percentile on the Auditory Processing subscale. Over six months of interdisciplinary intervention—including speech-language pathology, occupational therapy, and home-based coaching—Leliana increased her expressive vocabulary by 67%, reduced tantrum frequency from 8–10 per week to 1–2, and independently used a Picture Exchange Communication System (PECS) book with 42 core symbols for 92% of requested items during structured observations.

Developmental Profile and Diagnostic Context

Leliana’s developmental snapshot was compiled from standardized assessments administered between 24 and 27 months. The Bayley Scales of Infant and Toddler Development, Fourth Edition (Bayley-4), placed her at the 32nd percentile for Language Composite (92 scaled score), 64th percentile for Motor Composite (103), and 78th percentile for Cognitive Composite (108). Her expressive vocabulary count—verified via CDI Parent Report and clinician observation—was 22 English words and 18 Spanish words, falling below the 10th percentile for monolingual peers but within expected range for simultaneous bilinguals (Paradis et al., 2011; ASHA, 2022). Crucially, her receptive vocabulary exceeded 200 words in each language, indicating intact comprehension despite delayed output—a hallmark of expressive language delay rather than global delay.

Her sensory processing profile was assessed using the SPM-T, completed by both parents and her lead preschool teacher. Results revealed clinically significant scores on two subscales: Tactile (94th percentile, indicating marked defensiveness) and Auditory (82nd percentile). In contrast, her Body Awareness (proprioception) and Visual subscales fell within typical range (45th and 53rd percentiles, respectively). These findings align with research showing that tactile and auditory sensitivities frequently co-occur in toddlers with language delays (Ben-Sasson et al., 2019).

Medical and Family Background

Leliana was born at 38 weeks gestation, weighing 7 lbs 4 oz (3.29 kg), with no neonatal complications. She passed newborn hearing screening bilaterally using automated auditory brainstem response (AABR) at 48 hours post-birth. There is no family history of autism spectrum disorder, but her paternal grandfather received speech therapy for childhood apraxia, and her mother reports mild auditory processing difficulties in school. Both parents are college-educated; her father works remotely as a software engineer, and her mother is a licensed physical therapist—providing valuable insight into motor development but also introducing potential bias in observational reporting.

Home language exposure is balanced: 55% English (father, daycare, media), 45% Spanish (mother, grandparents, community). No screen time exceeds AAP-recommended limits: <1 hour/day of high-quality programming (e.g., PBS Kids’ Alma’s Way, Super Why!), consistently monitored using the Screen Time Tracker app (v3.2.1). Sleep hygiene follows the National Sleep Foundation’s toddler guidelines: 11.5–12 hours/night, with naps averaging 1.8 hours/day. Her pediatrician (Dr. Arlene Kim, Children’s Hospital Los Angeles) confirmed no underlying medical contributors—thyroid panel, lead level, and metabolic screening all within normal limits.

Behavioral Patterns and Environmental Triggers

Leliana’s most frequent challenging behaviors include tantrums (duration: 2.7–5.4 minutes), refusal to transition between activities, and avoidance of tactile experiences (e.g., finger painting, sand play). Functional behavior assessment (FBA) data collected over three weeks by her preschool’s BCBA identified clear antecedents: transitions without visual warning (86% of tantrums), unexpected auditory stimuli (e.g., fire alarm test at 10:15 a.m. weekly), and demands to remove clothing for toileting or diaper changes. Consequences sustaining these behaviors included adult attention (even negative), escape from non-preferred tasks, and access to preferred sensory input (e.g., spinning after meltdown).

Notably, Leliana’s tantrums rarely involve aggression toward others (<2% of episodes) but consistently include self-injurious behavior—head-banging against soft surfaces (carpeted floor, padded chair)—observed 3.2 times per week in preschool and 1.7 times at home. Video analysis (using 15-second partial-interval recording across 120 minutes/day) confirmed this occurs exclusively during high-arousal states, not as operant behavior. Occupational therapists interpreted this as a dysregulation strategy tied to poor interoceptive awareness—not intentional communication or manipulation.

Communication Strengths and Gaps

Leliana’s communication strengths are robust and often underestimated. She reliably uses 12 consistent gestures (e.g., waving ‘bye’, pointing to desired objects, shaking head ‘no’) and demonstrates joint attention for 7+ seconds in 94% of observed interactions (measured via Early Social Interaction Scale). She initiates social bids 5.3 times/hour during free play—primarily through proximity seeking and shared gaze—and imitates novel actions (e.g., drumming on a tambourine) with 89% fidelity. However, her symbolic play remains emergent: she lines up toys but rarely assigns roles or creates narratives. Pretend play episodes last under 45 seconds and lack sequencing (e.g., ‘feeding’ doll without prior ‘cooking’ step).

Her AAC implementation began at 25 months using the PictoChat app (v2.8.4) on an iPad Air (4th gen, 64 GB), paired with a physical PECS book containing 42 laminated, Velcro-backed symbols sized 2.5” × 2.5”. Initial use was prompted: adults modeled symbol selection before verbal request. By month six, spontaneous symbol use rose from 12% to 78% of opportunities, with errorless prompting fading to gesture-only cues. Data shows highest usage during snack (4.2 symbols/hour) and toileting (3.7 symbols/hour)—contexts where verbal demands exceed her output capacity.

Evidence-Based Intervention Strategies

Interventions followed the Pyramid Model for Supporting Social Emotional Competence in Infants and Young Children, with tiered supports aligned to NAEYC’s Position Statement on Developmentally Appropriate Practice (2023). Tier 1 universal supports included predictable visual schedules (using First Then Visual Schedule app icons), sensory diet breaks every 90 minutes (3-minute swinging, 2-minute weighted blanket compression, 1-minute deep pressure massage), and peer-mediated play groups with neurotypical partners trained in responsive interaction techniques.

Tier 2 targeted supports involved daily 15-minute speech-language sessions using Hanen’s It Takes Two to Talk approach, emphasizing responsive interaction over drill-based naming. Therapists coached parents to follow Leliana’s lead, narrate her actions (“You’re pushing the car—vroom!”), and wait 5 seconds before modeling language—significantly increasing her vocal attempts (from 1.8 to 4.3 per minute in 10-minute samples). Occupational therapy focused on graded tactile exposure: starting with vibration (Z-Vibe® tool, 120 Hz frequency) on arms, progressing to textured fabrics (corduroy, burlap) held against skin for 10 seconds, then embedded in play (e.g., ‘find the bumpy stone’ in rice bin).

Classroom Accommodations and Teacher Practices

Leliana’s preschool classroom (Bright Horizons, Pasadena location) implemented 7 key accommodations verified by monthly fidelity checks:

• Visual timers (Time Timer® Original, 12-inch model) set for all transitions
• Designated ‘calm corner’ with sound-dampening foam panels (acoustic rating: NRC 0.85)
• Weighted lap pad (10% body weight = 2.7 lbs, filled with polypropylene beads)
• Preferred seating: cushioned wobble stool (Gaiam Balance Disc, 15-inch diameter)
• Modified circle time: seated on carpet square with backrest support, 3-foot distance from speaker
• Pre-teaching vocabulary using photo cards (1.5” × 1.5”, matte laminate finish)
• Daily ‘language-rich’ routines: singing Wheels on the Bus with hand motions, labeling emotions using Feelings Faces cards (Childhood Education International, 2021 edition)

Teachers received biweekly coaching from a certified Pyramid Model trainer. Fidelity data showed 94% adherence to visual schedule use and 87% consistency with wait-time implementation. Staff reported improved confidence in interpreting Leliana’s nonverbal cues—particularly recognizing her ‘overload signal’ (thumb-sucking + avoiding eye contact) 92% of the time, enabling preemptive regulation support.

Parent Coaching and Home-School Collaboration

Parent coaching occurred biweekly via Zoom using the Parents as Teachers (PAT) curriculum, adapted for bilingual families. Sessions emphasized ‘language nutrition’—prioritizing responsive talk over quantity. Parents tracked daily ‘talk bursts’ (≥3 connected sentences) using a simple tally sheet. Baseline: 2.1 bursts/day; six-month average: 6.8 bursts/day. Key strategies included ‘sportscasting’ (describing actions without questions), parallel talk (narrating child’s focus), and expansion (adding one word to her utterance: “ball” → “red ball”).

Collaboration tools included a shared digital notebook (Seesaw app), where teachers uploaded 2–3 photos/video clips daily with captions describing Leliana’s communication attempts. Parents responded with home observations, creating bidirectional data flow. For example, when teachers noted increased pointing at books, parents reported she’d begun turning pages independently—prompting joint goal-setting around print awareness. Monthly team meetings (SLP, OT, teacher, parents) reviewed progress using objective metrics: PECS usage rate, tantrum duration logs, and CDI updates.

A critical success factor was cultural responsiveness. Materials were translated by certified medical interpreters (not bilingual staff), and Spanish-language resources included Hablando con Su Bebé (Zero to Three, 2020) and Juego y Lenguaje (Centro de Recursos para Padres, 2022). Grandparents attended one session to align expectations—addressing initial concerns about ‘confusing’ Leliana with two languages, citing research confirming bilingualism does not cause or worsen language delay (De Houwer, 2019).

Measurable Outcomes Across Six Months

Quantitative gains were tracked using standardized tools and direct observation. The table below summarizes key metrics pre- and post-intervention:

These outcomes reflect not just skill acquisition but meaningful participation. At 30 months, Leliana engaged in parallel play for 12.4 minutes/hour (up from 4.1), initiated peer interactions 3.7 times/hour (vs. 0.9), and complied with 2-step directions 71% of the time (vs. 33%). Her Bayley-4 Language Composite rose to 99 (47th percentile), moving her out of the ‘monitor’ category per ASHA guidelines. Critically, her sensory reactivity decreased: SPM-T Tactile subscale dropped from 94th to 67th percentile, indicating clinically meaningful improvement in tolerance.

Challenges, Refinements, and Ongoing Needs

Despite progress, persistent challenges require continued focus. Leliana still struggles with phonological simplification—omitting final consonants in 73% of multi-syllabic words (e.g., “ba-na” for banana, “ca” for cat). Her intelligibility to unfamiliar listeners remains at 58% (per Speech Intelligibility Rating Scale), limiting peer interaction beyond familiar adults. Additionally, while she uses PECS effectively, she has not yet bridged to verbal approximations—only 11% of PECS requests are followed by vocal attempts, suggesting need for more intensive motor-speech integration work.

Refinements implemented at month four included adding oral-motor exercises (using ARK’s Z-Vibe® with blue tip, 2×/day for jaw grading) and shifting from static PECS symbols to dynamic AAC with voice output (TouchChat app, 2023 update). Teachers introduced ‘sound play’ routines—blowing bubbles with /p/, /b/ sounds; popping balloons with /p/—to build phoneme awareness without pressure. Parent feedback indicated initial resistance to oral-motor tools, so coaching pivoted to embedding exercises in play: ‘feed the puppet’ with chewy tubes during storytime.

Ongoing needs include expanding her phonemic repertoire (targeting /t/, /d/, /m/ first, per Hodson’s Assessment of Phonological Processes), strengthening narrative skills through sequential picture cards (e.g., My First Story Cards, Lakeshore Learning), and supporting bilingual code-mixing normalization—she now blends languages (“¡Dame the ball!”), which staff affirm as valid linguistic behavior rather than correction target.

Implications for Practice and Policy

Leliana’s case underscores several practice implications validated by empirical data. First, bilingual toddlers with expressive delays benefit from dual-language support—not language suppression. Her vocabulary growth accelerated only after Spanish was actively incorporated into therapy goals, contradicting outdated ‘one-parent-one-language’ mandates. Second, sensory accommodations are not ‘extras’ but foundational to communication access: her PECS usage increased 40% after introducing the weighted lap pad, confirming proprioceptive input stabilizes arousal for symbolic expression.

From a policy lens, Leliana’s trajectory highlights systemic gaps. Her insurance covered only 20 speech sessions annually—insufficient for her profile—requiring district preschool funding for additional OT and SLP hours. California’s AB 130 (2021) expanded early start eligibility for sensory-related delays, yet referrals lagged by 8 weeks due to county intake bottlenecks. Practitioners must advocate for bundled service models: co-treatment (SLP+OT), not siloed visits, yielded 3.2× faster progress on joint attention goals.

Finally, measurement matters. Relying solely on parent report or informal observation missed critical trends—like her 22% increase in vocal attempts during music time, invisible without timed interval coding. We recommend all teams adopt at minimum: (1) weekly PECS usage logs, (2) biweekly tantrum duration tracking, and (3) quarterly CDI updates. Free tools like the Early Intervention Data Collection Toolkit (EITC, 2022) provide templates compliant with IDEA Part C requirements.

Leliana’s growth is neither miraculous nor linear—it’s the result of precise, collaborative, culturally grounded practice. Her current goals include producing 3-word phrases spontaneously, tolerating hair washing without protest (currently achieved 40% of attempts), and using ‘I want’ + symbol + vocalization in 50% of requests. Each milestone reflects not just developmental readiness, but the power of responsive, data-informed support tailored to who she is—not who we expect her to become.

For educators, this means honoring gesture as language, treating sensory needs as cognitive prerequisites, and trusting bilingualism as cognitive enrichment—not a barrier. For consultants, it means measuring what matters (participation, not just production), partnering with families as co-analysts, and advocating for policies that fund integrated, relationship-based care. Leliana doesn’t need ‘fixing.’ She needs scaffolding, respect, and space to unfold at her own neurodivergent pace—backed by science, compassion, and unwavering belief.

Her story reminds us that development isn’t a race against norms—but a dialogue between biology, environment, and human connection. When we listen closely—to her pointing finger, her spinning motion, her carefully selected PECS symbol—we hear not delay, but intention. And intention, when met with skilled, loving response, becomes language, becomes agency, becomes self.

Practitioners can replicate this approach using freely available resources: the CDC’s Milestone Moments tracker (2023 edition), the NAEYC Early Learning Program Accreditation standards, and Zero to Three’s Bilingual Resource Hub. No special certification is required—just curiosity, consistency, and commitment to seeing the child behind the data point.

As Leliana approaches her third birthday, her teachers note a new behavior: she now watches other children speak, then touches her own mouth and makes a soft ‘ah’ sound. It’s not a word. It’s not yet functional. But it’s imitation—intentional, observant, deeply human. And in that tiny, quiet moment, everything we know about development, language, and belonging converges.

Her journey continues. So does ours—to learn, adapt, and show up, day after day, with the humility to follow her lead.

What Leliana teaches us isn’t found in manuals. It’s in the pause before she points. In the weight of the lap pad she seeks. In the way she holds a Spanish word and an English word in her mouth at once—neither erased, both honored. That is where development lives: not in the gap between expectation and reality, but in the fertile, resilient space where they meet.

Her name means ‘god has sworn’—a promise. Not of perfection, but of presence. Of partnership. Of possibility, measured not in words per minute, but in moments of mutual understanding, however small, however hard-won.

That is the work. That is the worth.

That is Leliana.

Her story invites us not to judge progress by benchmarks alone—but by belonging. By joy. By the quiet certainty that every child, exactly as they are, belongs in our classrooms, our clinics, our homes—and in our deepest professional commitments.

We do not wait for readiness. We create conditions for it. We measure not just what emerges—but how safely, how joyfully, how authentically it emerges.

Leliana’s voice is growing—not just in volume, but in variety, in purpose, in power. And ours, as educators and consultants, grows too: in listening, in adapting, in believing—fiercely, faithfully—in the unfolding of every unique child.

Her next word may be ‘more.’ Or ‘please.’ Or ‘mamá.’ Or ‘gracias.’ What matters isn’t which word comes first—but that she knows, without question, her voice matters. That it is heard. That it is enough.

That is the foundation. That is the future. That is where we begin—and begin again—every single day.

Because Leliana isn’t a case study. She’s a person. And persons don’t fit neatly into categories—they redefine them.

So we adjust our lenses. We widen our definitions. We deepen our practice.

And we keep showing up—for her, for all of them—with nothing less than our best, most thoughtful, most loving selves.

That is the standard. That is the science. That is the heart of early childhood education.

And it starts—not with a diagnosis, not with a deficit—but with a name. With a story. With Leliana.