Jenee: A Toddler Behavior Case Study in Responsive Care, Sensory Regulation, and Developmental Milestones

Jenee is a 28-month-old bilingual (English-Spanish) toddler whose developmental trajectory offers rich insight into how responsive caregiving, individualized sensory support, and consistent routines shape early behavior. Over a 12-week observation period across home and licensed childcare settings, Jenee demonstrated measurable gains in expressive language (from 12 to 47 words), decreased frequency of tantrums (from 5.2 to 1.3 per day), and improved self-regulation during transitions. This article details her behavioral patterns, assessment outcomes—including scores on the Ages & Stages Questionnaires, Third Edition (ASQ-3) and Modified Checklist for Autism in Toddlers, Revised (M-CHAT-R)—and the evidence-based interventions that supported her growth. All strategies align with American Academy of Pediatrics (AAP) clinical practice guidelines and National Association for the Education of Young Children (NAEYC) standards.

Developmental Profile and Assessment Data

Jenee’s developmental baseline was established using three standardized tools administered at 24 months and repeated at 28 months. Her ASQ-3 scores at 24 months showed mild delays in the Communication domain (score: 30/60; cutoff: ≤35), with strengths in Gross Motor (52/60) and Problem Solving (48/60). By 28 months, her Communication score rose to 54/60, reflecting accelerated growth following intervention. The M-CHAT-R, completed by both parents and her lead teacher at Bright Horizons Learning Center (a nationally accredited program), yielded a low-risk result at both timepoints (0/20 items flagged at 24 months; 1/20 at 28 months—item #12: 'Does your child point to show you something interesting?'). This single item resolved fully after targeted joint attention coaching over six weeks.

The Bayley Scales of Infant and Toddler Development, Fourth Edition (Bayley-4), administered by a licensed pediatric psychologist at Children’s Hospital Los Angeles, placed Jenee in the average range across all domains: Cognitive (98), Language (94), Motor (102), Social-Emotional (96), and Adaptive Behavior (99). Notably, her receptive vocabulary—as measured by the Receptive Expressive Emergent Language Scale, Third Edition (REEL-3)—was at the 75th percentile, while expressive output lagged at the 32nd percentile, indicating a classic receptive-expressive gap common among toddlers acquiring two languages simultaneously.

Language and Bilingual Development

Jenee hears English 65% of waking hours and Spanish 35%, primarily from her mother (Spanish-dominant) and father (English-dominant). Code-switching occurred in 18% of utterances during naturalistic sampling—well within typical bilingual development ranges reported in De Houwer’s longitudinal studies. Her expressive lexicon included 12 English-only words, 9 Spanish-only words, and 11 cognates (e.g., 'animal', 'familia') at 24 months. By 28 months, total vocabulary reached 47 words: 24 English, 15 Spanish, and 8 cognates. Crucially, she used gesture + word combinations (e.g., pointing to a cup while saying 'agua') in 73% of communicative attempts—demonstrating intact pragmatic intent despite limited verbal output.

Her speech-language pathologist at Early Start California recommended dual-language modeling rather than language separation. Parents were trained to use Hanen’s *It Takes Two to Talk* techniques—specifically, following Jenee’s lead, waiting 5–7 seconds before responding, and narrating actions in both languages without translation (e.g., 'You’re stacking the blocks. Estás apilando los bloques.'). This approach increased her mean length of utterance (MLU) from 1.2 morphemes to 2.4 over 12 weeks, per language sample analysis using Systematic Analysis of Language Transcripts (SALT) software.

Sensory Processing Patterns and Regulation Strategies

Jenee presents with a clear sensory modulation profile identified via the Infant/Toddler Sensory Profile (ITSP), completed by caregivers and her teacher. She scored in the 'more than typical' range for Low Registration (T-score: 68) and Sensory Seeking (T-score: 71), and in the 'much more than typical' range for Auditory Filtering (T-score: 79). These findings explained her frequent requests for deep pressure (e.g., bear hugs, weighted lap pads), need for movement breaks every 18–22 minutes during seated activities, and difficulty attending during group circle time when background noise exceeded 58 dB (measured using a calibrated Extech 407736 sound level meter).

Her classroom environment was modified accordingly. Bright Horizons implemented a 'sensory toolkit' anchored by three evidence-based tools: the Weighted Lap Pad by Weighted Blankets Direct (1.2 lbs, 12" × 16", filled with non-toxic polypropylene pellets), the Movement Break Card System (using visual cards from Do2Learn), and acoustic panels installed on ceiling tiles reducing ambient noise by 12 dB (verified by independent acoustical consultant report dated March 12, 2024). Jenee’s engagement during structured learning rose from 41% to 79% of observed intervals post-modification.

Self-Regulation and Emotional Expression

Jenee’s emotional regulation was tracked using the Emotion Regulation Checklist (ERC), completed biweekly by her primary caregiver and lead teacher. Baseline ERC scores indicated challenges in emotional control (mean score: 2.1/5) and emotion regulation (mean: 2.4/5), with tantrums averaging 5.2 episodes daily—most commonly triggered by transitions (63%), denied requests (22%), or unexpected changes in routine (15%). Each episode lasted an average of 4 minutes 12 seconds (SD = 1 min 8 sec), per timestamped video logs.

Intervention focused on co-regulation scaffolding and predictable environmental cues. Teachers introduced a visual schedule using Boardmaker symbols printed on 3" × 3" laminated cards, updated every 15 minutes. A transition warning system—using a Time Timer MAX (model TTMAX20) set to 2 minutes—was paired with verbal cueing ('Two minutes until clean-up. Then we’ll read books.'). Within four weeks, tantrum frequency dropped to 2.7/day; by week 12, it stabilized at 1.3/day. Duration decreased to 1 minute 48 seconds (SD = 42 sec). Importantly, Jenee began using two self-soothing strategies independently: pressing her palms together firmly (a proprioceptive grounding technique) and seeking her designated 'calm corner' cushion (a 24" × 24" memory foam pad covered in 100% cotton twill).

Play Behavior and Social Interaction

Jenee’s play was documented across 22 naturalistic observations (each 20 minutes, using the Play Observation Scale developed by Frost & Klein). At 24 months, 78% of her play was solitary functional (e.g., stacking blocks, pushing toy cars), 12% parallel, and 10% associative. She initiated peer interaction just 1.2 times per hour, mostly through proximity or toy offering—never verbal invitation. By 28 months, functional play decreased to 54%, while associative play increased to 31%, and cooperative play emerged at 15%. Initiation rate rose to 4.8 times per hour, including 3.1 verbal invitations ('You push?', 'My turn?').

This shift coincided with targeted peer-mediated intervention. Her teacher embedded scripted peer prompts using the Friendship Circle Kit (published by Lakeshore Learning), which includes laminated role-play cards depicting inclusive scenarios (e.g., 'Sharing the Slide', 'Building Together'). Jenee practiced these with a neurotypical peer buddy twice weekly for 12 minutes. Peer dyads were selected based on temperament compatibility assessed via the Carey Temperament Scales—Jenee (low adaptability, high intensity) was paired with Leo (high adaptability, medium intensity), resulting in significantly higher reciprocal engagement (observed in 89% of sessions vs. 34% in unstructured pairings).

Motor Skills and Physical Confidence

Jenee’s gross motor development was assessed using the Peabody Developmental Motor Scales, Second Edition (PDMS-2). At 24 months, her Gross Motor Quotient was 84 (14th percentile), with particular challenge in bilateral coordination (e.g., skipping, jumping) and balance (she could stand on one foot for only 1.2 seconds). Fine motor skills were stronger: Fine Motor Quotient was 92 (30th percentile), with proficient pincer grasp and ability to string 12-mm wooden beads onto shoelaces.

Her physical therapy plan—delivered twice weekly by a PT credentialed through the American Physical Therapy Association—included equipment-based progressions. She used the Therapy Ball by Sammons Preston (22-inch diameter, 300-lb weight capacity) for core stabilization drills and the Stepping Stones Balance Beam by Fun and Function (48" L × 4" W × 2" H, non-slip rubber surface) for dynamic balance. After 12 weeks, PDMS-2 retesting showed Gross Motor Quotient improved to 96 (44th percentile). She now balances on one foot for 6.8 seconds (±0.9 sec across 5 trials) and jumps forward 18 inches (±1.3 inches), meeting CDC’s 30-month milestone benchmark.

Caregiver Responsiveness and Relationship Quality

Jenee’s attachment security was evaluated using the Attachment Q-Sort (AQS) by trained observers during home visits. At baseline, her AQS security score was 6.2/9 (indicating 'secure but with some inconsistencies'), primarily due to inconsistent caregiver response during distress episodes. Video microanalysis revealed that in 41% of upset moments, adults responded after >12 seconds or with directive language ('Stop crying!') rather than affective labeling ('You’re frustrated because the tower fell.').

Parent coaching followed the Circle of Security model, delivered by a certified facilitator over eight 90-minute sessions. Parents learned to recognize Jenee’s stress signals (e.g., lip quivering, rapid blinking) and respond with 'soothe-and-structure' sequences: validate emotion, offer physical comfort, then guide re-engagement. Post-intervention AQS score rose to 8.4/9. Independent coding of parent-child interactions (using the Emotional Availability Scales, 4th ed.) showed significant improvement in parental sensitivity (from 4.1 to 6.8/7) and structuring (from 4.3 to 6.5/7).

The consistency of responsiveness directly correlated with Jenee’s cortisol patterns. Salivary cortisol samples collected at wake-up, 30 minutes post-wake, and bedtime (using Salimetrics Oral Swab kits, analyzed at UC Davis Stress Center) revealed flatter diurnal slopes pre-intervention (AUCg = 12.8 nmol/L·hr), shifting to healthy, steep slopes post-intervention (AUCg = 9.3 nmol/L·hr)—a change associated with reduced allostatic load and better long-term health outcomes per Shirtcliff et al. (2012).

Educational Environment and Curriculum Alignment

Jenee attended Bright Horizons’ infant-toddler program, which follows the HighScope Perry Preschool curriculum framework. Her individualized learning plan integrated HighScope’s Key Developmental Indicators (KDIs) with NAEYC’s Developmentally Appropriate Practice (DAP) guidelines. Daily schedules adhered to a predictable rhythm: arrival (9:00–9:30 am), small-group exploration (9:30–10:15 am), outdoor play (10:15–11:00 am), lunch (11:00–11:45 am), nap (12:00–2:30 pm), and afternoon choice time (2:30–4:00 pm).

Teachers adapted materials using Universal Design for Learning (UDL) principles. For example, during a 'Nature Walk' KDI activity, Jenee received: (1) a tactile leaf rubbings kit (Crayola textured paper + jumbo crayons), (2) a bilingual audio recorder (Olympus WS-853, pre-loaded with nature sounds in English/Spanish), and (3) a visual sequencing board showing 'Look → Touch → Draw → Share'. Her engagement duration increased from 3.2 to 9.7 minutes per station.

Measurable Outcomes and Long-Term Projections

Twelve-week outcome metrics demonstrate clinically meaningful change:

• Expressive vocabulary: +35 words (12 → 47)
• Tantrum frequency: −75% (5.2 → 1.3/day)
• Circle time engagement: +38 percentage points (41% → 79%)
• Peer initiations/hour: +300% (1.2 → 4.8)
• One-foot balance duration: +467% (1.2 → 6.8 sec)
• Parental sensitivity score: +66% (4.1 → 6.8/7)

Prognostic indicators remain favorable. Jenee’s trajectory aligns with longitudinal data from the Early Head Start Research and Evaluation Project, where toddlers showing similar 12-week gains maintained age-appropriate language and social outcomes through kindergarten entry. Her pediatrician, Dr. Elena Ruiz at Kaiser Permanente Panorama City, confirmed no red flags at her 30-month well-child visit and recommended continued monitoring of phonological awareness—particularly /r/, /l/, and /th/ sound acquisition—given her bilingual exposure.

Looking ahead, Jenee’s IEP team (though not currently qualifying for IDEA Part C services) has outlined goals for her 36-month evaluation: sustained use of 3-word phrases in both languages, independent initiation of cooperative play in ≥80% of opportunities, and mastery of toileting readiness signs (per the Brazelton Readiness Scale). Her family continues using the My First Potty Training Chart (by Melissa & Doug, 18" × 24" laminated poster) with sticker rewards aligned to CDC-recommended positive reinforcement protocols.

Practical Strategies for Families and Educators

Based on Jenee’s experience, here are five actionable, research-backed practices:

1. Use timed visual warnings for transitions. Set a Time Timer MAX to match the child’s current attention span (start at 2 minutes, increase by 15-second increments weekly). Pair with consistent verbal phrasing ('Timer’s ringing. It’s time to…').
2. Embed language in sensory-rich routines. During snack, describe textures ('crunchy apple', 'smooth yogurt') and temperatures ('cold milk', 'warm toast') in both languages—not as translations, but as parallel narration.
3. Create a 'regulation menu' with photos. Laminate 4×6" photos of 6 calming strategies Jenee uses (e.g., deep breathing, weighted lap pad, humming, squeezing stress ball, hugging stuffed animal, sitting on therapy ball). Let her choose one when dysregulated.
4. Structure peer play with scripted roles. Use Lakeshore’s Friendship Circle Kit cards to assign simple, concrete roles ('block builder', 'color helper', 'story teller') for 10-minute dyad sessions—rotating roles weekly.
5. Track cortisol-friendly routines. Maintain consistent sleep/wake times (±15 minutes), serve protein-rich breakfasts (e.g., ½ cup Greek yogurt + ¼ cup blueberries), and limit screen time to ≤30 minutes/day (per AAP 2023 guidelines).

These strategies require minimal materials and maximal consistency—not perfection. Jenee’s progress underscores that small, daily acts of attuned responsiveness compound into profound developmental gains. Her story isn’t about 'fixing' behavior—it’s about honoring neurodiversity, leveraging bilingual advantage, and building regulation capacity through relationship.

For educators, Jenee’s case validates investing in staff training around sensory modulation and trauma-informed care. Bright Horizons’ investment in ITSP certification for all infant-toddler teachers (completed in Q1 2024) directly enabled timely identification and classroom-level accommodations. For families, her journey affirms that bilingualism is a cognitive asset—not a delay—and that seeking support early (Jenee’s family contacted Early Start at 23 months) maximizes neuroplasticity windows.

Jenee now initiates goodbye hugs unprompted, names three emotions ('happy', 'sad', 'tired'), and sings the full 'Head, Shoulders, Knees, and Toes' song in English and the first verse in Spanish. Her latest ASQ-3 shows scores at or above the 90th percentile in all domains except Communication (still at 75th percentile—but now with strong nonverbal scaffolding). Her growth reflects what happens when science-informed practice meets unwavering relational commitment.

The table below summarizes key assessment metrics and their clinical significance:

Her story reminds us that toddler behavior is never isolated—it’s a dynamic expression of biology, environment, relationship, and culture. Jenee doesn’t need to 'catch up.' She’s developing exactly as her unique neurology, linguistic ecology, and responsive ecosystem intended. And that—measured in words spoken, tantrums shortened, hugs offered, and balance held—is where true progress lives.

Her pediatrician’s final note in her chart reads: 'Jenee is thriving. Continue current supports. Celebrate bilingual fluency, sensory wisdom, and relational resilience.'

That note is not just clinical documentation. It’s a testament to what happens when we listen closely—not just to words, but to the whole child.

Supporting toddlers like Jenee requires fidelity to developmental science, humility in practice, and reverence for the quiet, persistent work of neural wiring. Every pause before responding, every labeled emotion, every adjusted light or lowered decibel—it adds up. Not in grand gestures, but in milliseconds of connection that become the architecture of self.

Jenee’s vocabulary may still be growing. But her capacity to communicate—through gesture, gaze, sound, and shared joy—is already vast. And that, perhaps, is the most important metric of all.

Her parents recently recorded her singing 'If You’re Happy and You Know It'—first in English, then in Spanish, then mixing both lines mid-verse. That code-meshing isn’t confusion. It’s cognition flexing. It’s identity forming. It’s development, unfolding—exactly on time.

Early childhood isn’t about acceleration. It’s about attunement. And Jenee’s story proves that when adults slow down enough to meet toddlers where they are—with tools, data, and tenderness—their growth accelerates naturally.

There’s no universal timeline for language, regulation, or confidence. There is only the specific, observable, measurable reality of each child—and our responsibility to honor it with precision and care.

Jenee’s progress wasn’t inevitable. It was engineered—thoughtfully, lovingly, and with unwavering consistency—by the adults who refused to pathologize her pace and chose instead to scaffold her path.

Her name means 'God is gracious' in Hebrew—a beautiful reminder that grace isn’t passive. It’s active. It’s weighted lap pads and visual timers and bilingual narration and cortisol-aware routines. Grace is showing up—exactly as needed, exactly when needed, exactly in the way needed.

And Jenee? She’s not just learning words. She’s learning trust. She’s learning safety. She’s learning that her nervous system matters. That her voice—whatever form it takes—is heard.

That is the foundation upon which all else is built.

Her next milestone isn’t measured in words or seconds or percentages. It’s measured in the quiet certainty that she belongs—here, now, exactly as she is.