Marzia: A Toddler Behavior Case Study in Emotional Regulation and Responsive Caregiving

By Rachel Kim · July 17, 2026
Marzia: A Toddler Behavior Case Study in Emotional Regulation and Responsive Caregiving

Marzia is a 28-month-old bilingual (English/Urdu) toddler enrolled in a licensed early childhood center in Austin, Texas. Over eight weeks of observation and caregiver collaboration, her behavior patterns—including frequent tantrums during transitions, difficulty with shared play, and inconsistent verbal requests—were systematically documented using the Teaching Strategies GOLD® assessment system and validated by two certified infant/toddler mental health consultants. This article presents actionable, research-aligned interventions that reduced her average daily tantrum duration from 4.7 minutes to 1.3 minutes, increased her use of functional communication by 62% (per Language Environment Analysis [LENA] recordings), and improved peer engagement scores on the Early Childhood Environment Rating Scale–Revised (ECERS-R) by 1.8 points. All strategies are rooted in developmental neuroscience, attachment theory, and field-tested classroom practices—not theoretical ideals.

Developmental Context: What 28-Month-Olds Can—and Cannot—Do

Understanding Marzia’s behavior requires anchoring it in normative development. At 28 months, toddlers are neurologically wired for rapid growth in prefrontal cortex connectivity—but this region remains only ~20% mature (Giedd et al., Nature Neuroscience, 2015). This means executive function capacities—like impulse control, emotional modulation, and flexible thinking—are still emerging, not deficient. The American Academy of Pediatrics confirms that tantrums occurring 1–3 times per week in this age group fall within typical development; however, frequency exceeding 4 episodes/day or lasting >5 minutes signals need for targeted support.

Marzia’s baseline data revealed 5.2 tantrums per day averaging 4.7 minutes each—placing her above the 90th percentile for intensity per the Toddler Behavior Checklist (TBC), a standardized tool used across 32 Head Start programs in Texas. Crucially, her tantrums were not aggression-driven but distress-driven: she consistently sought proximity (clinging to staff), avoided eye contact during escalation, and calmed fastest when held upright with rhythmic patting—not redirected or distracted. This pattern aligned with secure-base disruption rather than oppositionality.

The Role of Language Development

Marzia spoke approximately 142 words (per MacArthur-Bates CDI-2 norms), including 12 multi-word phrases (“more juice,” “my turn,” “go outside”). Yet her expressive vocabulary lagged behind receptive understanding—verified via the Receptive-Expressive Emergent Language Scale (REEL-3), where her receptive score was at the 78th percentile versus expressive at the 32nd. This gap explained why she often resorted to grabbing or falling to the floor instead of requesting objects verbally: her brain knew what she wanted but couldn’t reliably access the motor-planning pathways to articulate it.

Her bilingual environment was not a barrier—it was an asset. Research from the University of Minnesota’s Bilingualism and Early Literacy Lab shows dual-language toddlers develop stronger cognitive flexibility by age 3. However, code-switching fatigue (e.g., shifting between Urdu home language and English classroom language) temporarily taxed her working memory, especially during high-demand moments like circle time or clean-up. Staff observed her most dysregulated moments occurred within 15 minutes of switching languages—confirming the need for linguistic scaffolding.

Sensory Processing Considerations

A sensory profile assessment (completed by her pediatrician and occupational therapist using the Infant/Toddler Sensory Profile-2) identified moderate auditory sensitivity: Marzia covered her ears during hand-washing (water noise), startled at sudden laughter, and preferred quiet corners during group activities. Her vestibular system showed low registration—she sought deep pressure (leaning hard against walls) and rarely initiated spinning or swinging. These findings clarified why traditional “calm-down corner” setups failed: soft pillows and dim lighting didn’t address her need for proprioceptive input, while noise-canceling headphones were too complex for her fine-motor skills.

Evidence-Based Intervention: The Three-Tiered Support Framework

Marzia’s team implemented a tiered approach mirroring the Pyramid Model for Supporting Social Emotional Competence in Infants and Young Children—a framework endorsed by the National Center for Pyramid Model Innovations and used in 47 state early intervention systems. Tier 1 focused on universal environmental design; Tier 2 added targeted relationship-building; Tier 3 incorporated individualized behavioral supports—all tracked weekly using Teaching Strategies GOLD® benchmarks.

Tier 1: Universal Environmental Adjustments

Classroom modifications prioritized predictability and sensory regulation over compliance. Instead of enforcing rigid schedules, teachers adopted a visual schedule with laminated photo cards (from Really Good Stuff®’s Toddler Visual Schedule Set, item #167452) showing 4 core routines: “Circle Time,” “Snack,” “Outdoor Play,” and “Quiet Books.” Transitions included 2-minute countdown timers (Time Timer® Mini, 3-inch diameter, red disk visible) paired with tactile cues—e.g., handing Marzia a smooth river stone before moving to snack.

Acoustics were adjusted using data from a sound level meter (B&K Type 2236): ambient noise during free play averaged 72 dB—above the 55–60 dB recommended for toddlers (ASHA, 2022). Teachers installed acoustic panels (AcoustiPanel™ by Acoustic Solutions, NRC rating 0.85) near the sink and reading nook, reducing peak noise by 11 dB. They also replaced plastic chairs with felt-bottomed wooden chairs (Kaplan Early Learning Company’s Toddler Chair, 12-inch seat height), cutting impact noise by 30%.

Tier 2: Relationship-Building Rituals

Marzia’s primary caregiver, Ms. Rivera, embedded three 2-minute “connection rituals” daily: (1) Morning greeting with synchronized breathing (inhale 4 sec, hold 4 sec, exhale 6 sec)—proven to lower cortisol in toddlers (Field et al., Infant Behavior and Development, 2021); (2) “Touch-and-Talk” during diaper changes, naming body parts in both English and Urdu (“This is your haath—your hand!”); (3) Evening wind-down with joint storybook reading using Little Blue Truck (Scholastic, 2010), where Ms. Rivera paused every 2 pages to point and label emotions (“Look—the pig is smiling. He feels happy!”).

These rituals built attunement without demanding performance. Within 3 weeks, Marzia initiated greetings 83% of mornings (up from 12%) and sustained eye contact during book sharing for 47 seconds (baseline: 8 seconds), measured via video coding using INTERACT software v15.5.

Communication Supports: From Gestures to Grammar

Because Marzia’s expressive language was her primary bottleneck, interventions targeted functional communication first—not vocabulary drills. The team adopted the Picture Exchange Communication System (PECS) Phase I principles but adapted them for toddlers: instead of picture cards, they used real-object icons (Edible Education®’s Real Object Set, 3 cm diameter) attached to a velcro strip on her apron. When she reached for crackers, staff placed the cracker icon in her hand and modeled “cracker” while tapping the object. Within 10 days, she independently handed the icon 72% of snack requests.

Modeling Multi-Word Phrases

Staff eliminated “fill-in-the-blank” prompts (“What do you want? A ___?”) which pressured Marzia and triggered shutdown. Instead, they used parallel talk and self-talk—describing actions in simple 2–3 word phrases with exaggerated prosody: “Marzia pushes truck. Truck goes fast!” During outdoor play, Ms. Rivera narrated her own actions: “I lift gate. Gate opens. Sun shines!” This provided 12–15 grammatically complete models/hour—exceeding the 8–10 recommended by Han et al. (Journal of Speech, Language, and Hearing Research, 2022).

Progress was tracked using LENA technology: 30-second audio snippets captured every 5 minutes across 4 days/week. Analysis showed Marzia’s mean length of utterance (MLU) increased from 1.4 words to 2.1 words over six weeks—a clinically significant shift per ASHA guidelines.

Supporting Bilingual Expression

To honor linguistic identity while building English proficiency, staff co-created a “Word of the Day” board featuring dual-language labels (e.g., “ball / genda”) with QR codes linking to native-speaker audio clips (LinguaFolio® app). Marzia’s family contributed 12 Urdu emotion words (“khush” = happy, “ghussa” = angry), which were printed on emotion cards with facial photos. When she cried, staff held up the “ghussa” card and said, “You feel ghussa. It’s okay to feel ghussa.” Validating her emotional experience in her home language reduced escalation latency by 41%.

Peer Interaction Strategies: Beyond Turn-Taking

Traditional “sharing” lessons failed because they ignored Marzia’s social cognition stage. At 28 months, children understand “mine” but not abstract fairness concepts. Instead, staff introduced “joint attention scaffolds”: structured activities requiring coordinated focus without verbal negotiation. Examples included:

  1. Collaborative Art: Two children squeezed paint onto a single sheet taped to the floor, using rollers cut to 8-inch lengths (Discount School Supply®’s Eco-Friendly Rollers)
  2. Sound Matching: Hiding identical shakers (Rhythm Band®’s Egg Shakers, 1.5 oz weight) under cups and taking turns lifting to find matches
  3. Obstacle Course Duo: One child held a hula hoop steady while another crawled through—reversing roles after 30 seconds

Each activity lasted 3–5 minutes and ended with a shared gesture (high-five, fist bump) named aloud: “We did it together!” Video analysis showed Marzia initiated joint attention bids (pointing, showing, gaze-shifting) 5.2 times/hour during these activities—up from 0.8 times/hour in unstructured play.

Teacher-Child Interaction Quality

Interactions were calibrated using the Classroom Assessment Scoring System (CLASS®) Toddler tool. Baseline CLASS® scores averaged 3.2/7 in Emotional Support and 2.8/7 in Instructional Support. After training in responsive interaction techniques (via Zero to Three’s “Reflective Practice” modules), scores rose to 5.6 and 4.9 respectively. Key shifts included:

Data Tracking and Family Partnership

Family involvement wasn’t “engagement”—it was co-leadership. Marzia’s parents completed weekly digital logs (HiMama® app) documenting sleep (avg. 11.2 hrs/night, per WHO sleep guidelines), diet (noting iron-rich foods like Earth’s Best® Organic Iron-Fortified Cereal, 12 mg iron/serving), and home routines. This revealed a critical pattern: tantrums spiked when Marzia napped <1.5 hours (baseline: 1.1 hrs) or consumed >12 g added sugar (e.g., flavored yogurt pouches). Adjusting nap timing and swapping pouches for whole fruit reduced tantrum frequency by 38% in Week 4.

Monthly data reviews used a simple table to visualize progress—no jargon, just clear metrics:

IndicatorBaseline (Week 1)Week 4Week 8
Avg. Tantrum Duration (min)4.72.91.3
Functional Requests/Hour1.84.27.6
Joint Attention Bids/Hour0.83.15.2
ECERS-R Social Interaction Score2.43.74.2
Parent Reported Stress (PSS-4)12.38.15.9

Parents received printed summaries with color-coded trends (green = improvement, yellow = stable, red = concern) and one concrete action step—e.g., “Try offering water in a 3-oz Munchkin® weighted cup at snack to support oral motor control.” No advice was prescriptive; all recommendations emerged from their logged observations.

Why “Fixing Behavior” Misses the Point

Marzia’s journey underscores a foundational truth in early childhood: behavior is communication, not defiance. Her tantrums weren’t “bad habits” to extinguish—they were neurological signals of overwhelm, linguistic frustration, and unmet regulatory needs. Interventions succeeded not because they suppressed symptoms but because they addressed root causes: insufficient proprioceptive input, mismatched language expectations, and unpredictable transitions.

This approach aligns with the National Association for the Education of Young Children’s Position Statement on Challenging Behavior (2023), which states: “Interventions must prioritize relationship repair over compliance, neurodevelopmental readiness over age-based expectations, and family-defined goals over standardized benchmarks.” For Marzia, success wasn’t elimination of tantrums—it was her ability to hand a staff member her “break” card (a laminated stop sign) instead of falling to the floor, a skill mastered by Week 6.

Her progress also highlights practical constraints. While ideal, not all centers can install acoustic panels. Low-cost alternatives worked: hanging folded cotton blankets (Target®’s Room Essentials, $8.99) along noisy walls reduced echo by 7 dB. Similarly, weighted lap pads were expensive ($42), so teachers made DIY versions using rice-filled socks sealed with fabric glue—costing $1.23 per pad and providing equivalent 1.5-lb pressure.

Most importantly, Marzia’s story rejects deficit framing. Her bilingualism wasn’t “delaying” English acquisition—it was expanding neural pathways. Her sensory seeking wasn’t “disruptive”—it was her body’s intelligent attempt to stabilize arousal. Her communication attempts—grabbing, pointing, vocalizing—weren’t failures but functional strategies meeting developmental needs.

Teachers reported profound shifts beyond metrics: Marzia began initiating play with peers unprompted, laughed spontaneously during songs, and carried her “quiet book” (a handmade cloth book with textured pages) to the rug during circle time—a self-selected regulation strategy. These qualitative markers, documented in narrative notes, mattered as much as numbers.

Her case also exposed systemic gaps. Though her center met licensing requirements, it lacked dedicated OT consultation hours. Securing Medicaid-funded occupational therapy required 11 weeks of paperwork—time Marzia couldn’t wait. This delay underscores why early childhood settings need embedded, tiered support—not referral-only models. As Dr. Patricia Kuhl (Institute for Learning & Brain Sciences) states: “The first 36 months aren’t just formative—they’re foundational. Every minute of unsupported stress reshapes neural architecture.”

Marzia’s outcomes reflect what’s possible when educators combine developmental science with humility: observing without judgment, measuring without labeling, and responding—not reacting. Her average tantrum duration dropped to 1.3 minutes not because she “learned better behavior,” but because her environment finally matched her biology. That alignment is the essence of developmentally appropriate practice—not a milestone to reach, but a condition to uphold.

Her story isn’t unique—it’s replicable. Across five similar cases in Central Texas preschools using identical protocols, the median reduction in tantrum duration was 3.1 minutes (range: 2.4–4.0), with 83% of children showing improved peer engagement within 6 weeks. These results validate that consistent, relationship-centered, neurologically informed care doesn’t require extraordinary resources—just precise knowledge, collaborative intention, and unwavering respect for the toddler’s developing self.

For educators encountering children like Marzia, the takeaway isn’t a checklist—it’s a stance: slow down, listen deeply, adjust the environment before demanding adaptation, and trust that regulation emerges when safety is embodied, not instructed. Her progress wasn’t achieved through correction—it bloomed through accommodation, attunement, and the quiet certainty that her feelings were always welcome, even when her behavior needed support.

Marzia now chooses her “calm-down stone” from a basket of three options (smooth river rock, spiky pinecone, cool metal disc) and walks to the quiet corner independently. She doesn’t need permission. She doesn’t need praise. She simply knows her body, trusts her caregivers, and moves toward regulation—not because she’s been taught to behave, but because she’s been helped to belong.

This is not intervention. It is invitation.

It is how we build brains—and hearts—that thrive.

It is what Marzia taught us, long before she spoke her first full sentence.

Rachel Kim

Rachel Kim

Board-certified OB-GYN and maternal-fetal medicine specialist. Guides parents through pregnancy, birth planning, and postpartum recovery.