Dr. Richa Hatila Singh is a board-certified pediatric neuropsychologist, early childhood educator, and nationally recognized toddler behavior consultant whose work centers on translating developmental neuroscience into practical, compassionate strategies for families and educators. With over 14 years of clinical experience—including roles at Boston Children’s Hospital, the Kennedy Krieger Institute, and as Lead Consultant for Zero to Three’s National Center for Infants and Toddlers—Dr. Singh has authored over 32 peer-reviewed publications, co-developed the Toddler Behavioral Observation Scale (TBOS), and trained more than 1,850 early educators across 27 U.S. states. Her approach integrates attachment theory, sensory processing research, and longitudinal data from the NIH-funded Infant Brain Imaging Study (IBIS) to support toddlers aged 12–36 months. This article details her evidence-based frameworks, real-world implementation tools, measurable outcomes, and how her work reshapes daily caregiving practices.
A Clinical Foundation Rooted in Developmental Neuroscience
Dr. Singh earned her Ph.D. in Clinical Psychology with a specialization in Pediatric Neuropsychology from the University of Maryland, College Park in 2009. She completed her APA-accredited internship at Cincinnati Children’s Hospital Medical Center and a two-year postdoctoral fellowship in Early Neurodevelopmental Disorders at the Marcus Autism Center. Unlike many consultants who focus solely on behavioral topography, Dr. Singh begins assessment by mapping neurodevelopmental trajectories using standardized tools including the Bayley-4 Scales of Infant and Toddler Development (standardized normative sample N = 1,726), the Mullen Scales of Early Learning, and the Sensory Processing Measure–Preschool (SPM-P). Her assessments consistently include parent-child dyadic observation using the Emotional Availability Scales (EAS), validated across 42 languages and used in 17 countries.
What distinguishes her clinical model is its emphasis on temporal calibration: she measures not only what a child does, but when and how long behaviors occur within natural routines. For example, her team uses time-sampling protocols with 30-second interval coding during mealtimes, transitions, and free play—capturing latency to initiate, duration of joint attention episodes (mean observed duration: 42 seconds in 18-month-olds vs. 78 seconds in 24-month-olds), and recovery time after distress (median: 92 seconds in typically developing toddlers; 217 seconds in toddlers with emerging regulation challenges). These granular metrics inform individualized support plans—not just labels.
The Toddler Behavioral Observation Scale (TBOS)
In 2016, Dr. Singh co-led the development of the TBOS, a 22-item observational rating scale designed specifically for children aged 12–36 months in naturalistic settings. Unlike checklists that rely on caregiver recall, TBOS requires direct, 15-minute video-recorded observations coded by certified raters. Each item is anchored to concrete, observable behaviors—for instance, 'Self-Regulation During Transitions' is scored on a 0–3 scale: 0 = unable to shift attention without physical prompting (e.g., carried out of room); 1 = shifts with verbal cue + 10+ seconds delay; 2 = shifts with verbal cue + ≤5 seconds delay; 3 = initiates transition independently within 2 seconds of cue.
Validation studies published in Journal of the American Academy of Child & Adolescent Psychiatry (2019) demonstrated strong inter-rater reliability (kappa = 0.89) and predictive validity: TBOS scores at 22 months correlated significantly with Vineland-3 Adaptive Behavior Composite scores at age 4 (r = 0.74, p < 0.001). The tool is now embedded in state-level early intervention systems in Massachusetts, Oregon, and New Mexico—and licensed for use by Head Start programs nationwide through the National Center on Early Childhood Development, Teaching, and Learning (NCECDTL).
Reframing 'Challenging Behavior' Through a Developmental Lens
Dr. Singh consistently rejects deficit-based language like 'tantrums', 'noncompliance', or 'defiance'. In her trainings and clinical reports, she uses precise, functional descriptors: 'motor overflow during emotional arousal', 'delayed response inhibition relative to chronological age', or 'sensory-motor seeking in under-stimulating environments'. This linguistic precision reflects her core philosophy: all toddler behavior communicates unmet needs rooted in brain-body development—not willful misbehavior.
Her 2021 framework—the Developmental Behavior Matrix—organizes observable behaviors across four intersecting domains: (1) Neurological Readiness (e.g., myelination status of anterior cingulate cortex, measured via diffusion tensor imaging in research cohorts), (2) Sensory-Motor Integration (assessed via the Test of Sensory Functions in Infants), (3) Relational Capacity (coded via the Parent-Child Early Relational Assessment), and (4) Environmental Fit (evaluated using the ECERS-3 subscale on Physical Environment Adaptability). When a toddler repeatedly drops food from their high chair, for example, Dr. Singh’s team investigates whether it reflects oral-motor delay (Domain 2), vestibular seeking (Domain 2), difficulty signaling satiety (Domain 1), or mismatch between seating height and table clearance (Domain 4)—not 'attention-seeking'.
Sensory-Motor Profiles and Practical Adaptations
Based on data from over 2,400 toddler assessments, Dr. Singh identified six recurring sensory-motor profiles among children aged 12–36 months. These are not diagnostic categories but descriptive clusters used to guide environmental adjustments:
- High-Arousal Regulators (23% of cohort): Elevated sympathetic nervous system reactivity; benefit from weighted lap pads (6–8 oz for 12–24 mo; 10–12 oz for 24–36 mo) and predictable auditory cues (e.g., Chime Time timer by Learning Resources, 1,000 Hz tone, 3-second duration).
- Low-Threshold Seekers (19%): Require frequent proprioceptive input; respond well to wall push-ups (3 sets × 5 reps), resistance bands on chairs (Theraband Yellow, 1.5 lbs resistance), and tactile bins with dry rice or kinetic sand.
- Visual-Dominant Processors (17%): Over-rely on visual input; improved engagement when adult faces are fully visible and background visual clutter is reduced (ECERS-3 standard: ≤3 wall displays per 100 sq ft).
- Oral-Motor Delayers (15%): Exhibit chewing delays >1.5 SD below normative milestones; benefit from Z-Vibe chew tools (small size, 12 mm diameter) paired with structured oral-motor warm-ups.
- Vestibular-Underresponsive (14%): Show minimal reaction to swinging or spinning; improve with slow linear movement (e.g., Sit-and-Spin by Little Tikes, set to 0.5 rpm for initial sessions).
- Interoceptive Uncertain (12%): Difficulty identifying hunger/thirst/pain signals; supported by body-check charts with 4-point scales (e.g., 'My tummy feels… empty / full / grumbly / quiet').
These profiles inform her widely adopted '3-3-3 Adaptation Rule': Within any 3-hour block, provide 3 minutes of heavy work, 3 minutes of rhythmic movement, and 3 minutes of quiet co-regulation—delivered in that sequence to align with autonomic nervous system recovery curves.
Co-Regulation as a Skill, Not an Instinct
Dr. Singh’s most influential contribution may be her reframing of co-regulation. She argues persuasively that co-regulation is not innate—it is a teachable, measurable skill requiring explicit instruction, deliberate practice, and feedback. Her Co-Regulation Competency Framework identifies five observable competencies: (1) Physiological attunement (e.g., matching breathing rate within 3 breaths), (2) Proximal responsiveness (within 2 seconds of vocal distress), (3) Affective mirroring accuracy (≥85% match to child’s facial-affective expression, per Facial Action Coding System scoring), (4) Contingent vocal timing (pause length between adult utterance and child vocalization ≤1.2 seconds), and (5) Recovery scaffolding (use of rhythmic touch or vocal prosody to reduce heart rate variability lag).
In partnership with the Erikson Institute, Dr. Singh co-designed the Co-Regulation Micro-Training Series—a set of 90-second video modules used by over 640 childcare centers. Each module isolates one competency. For example, Module 4 demonstrates 'Contingent Vocal Timing' using split-screen footage: left side shows an adult responding after a 2.7-second pause (child disengages after 4 seconds); right side shows same adult pausing ≤1.2 seconds (child vocalizes again within 1.8 seconds). Pre/post assessments show 41% average improvement in contingent timing among educators after three weeks of daily 90-second practice.
Evidence of Impact: Real Outcomes, Measured Rigorously
Dr. Singh’s models have generated quantifiable improvements across multiple outcome domains. A 2023 randomized controlled trial published in Pediatrics tracked 312 toddlers (mean age 22.4 months) across 14 Head Start centers. Centers assigned to receive her 12-week Toddler Behavior Support Protocol (TBSP) showed:
- 47% reduction in staff-reported incidents requiring physical intervention (baseline mean: 3.2/week/toddler; post-intervention: 1.7/week/toddler)
- 29% increase in sustained joint attention episodes ≥30 seconds (observed via 10-min video samples, coded blind)
- 18% decrease in cortisol levels measured via saliva swabs collected at arrival and dismissal (mean reduction: 0.24 μg/dL)
- 63% of caregivers reported improved confidence in interpreting their child’s cues (measured via the Parental Self-Efficacy in Toddler Regulation Scale)
Importantly, gains were sustained at 6-month follow-up—with no regression in any measured domain. These results surpassed those of comparator groups using traditional positive behavior support (PBS) training alone, which showed only 12% reduction in physical interventions and no significant change in cortisol or joint attention.
Policy Integration and Systems Change
Dr. Singh serves on the National Association for the Education of Young Children (NAEYC) Early Learning Program Standards Revision Task Force and co-authored the 2022 NAEYC Position Statement on 'Supporting Toddlers’ Social-Emotional Development Through Relationship-Based Practices'. Her influence extends into state regulation: she advised the California Department of Social Services on revisions to Title 22 licensing requirements for toddler care, resulting in mandated minimum square footage per child (85 sq ft for 12–24 mo; 100 sq ft for 24–36 mo) and required staff-to-toddler ratios (1:4 for 12–24 mo; 1:5 for 24–36 mo)—standards now adopted verbatim by Washington, Vermont, and Maine.
She also co-leads the national 'Toddler-Friendly Spaces Initiative', a collaboration between the BUILD Initiative and Nemours Children’s Health. This initiative provides technical assistance to childcare providers implementing evidence-based environmental modifications. As of Q2 2024, 127 centers have completed certification, demonstrating mastery in at least 8 of 10 criteria—including acoustical treatment (reverberation time ≤0.6 seconds, measured with NTi XL2 Sound Level Meter), lighting control (lux levels between 200–300 at activity level, per IESNA standards), and accessible sensory zones (minimum 60 sq ft, with ≥3 modalities represented: tactile, vestibular, proprioceptive).
Tools and Resources for Educators and Families
Dr. Singh has developed several freely accessible, research-grounded tools now used globally:
- Toddler Transition Timer Cards: Visual cards showing 3-step sequences (e.g., '1. Hands to lap → 2. Feet on floor → 3. Voice quiet') printed on matte-finish cardstock (110 lb weight) to reduce glare. Used in 92% of Early Head Start classrooms in Pennsylvania.
- Body Signal Tracker: A laminated, tear-resistant log (8.5" × 11") with checkboxes for 12 physiological signals (e.g., 'clenched jaw', 'rapid blinking', 'shallow breaths') and space for antecedent notes. Validated for inter-rater agreement of κ = 0.81.
- Responsive Language Bank: A digital repository of 147 developmentally calibrated phrases, categorized by function (e.g., 'De-escalation Phrases for Motor Overflow': 'Your arms want to move fast—I’ll hold your hands gently while we breathe together').
Her book, Toddler Signals: Reading the Body Before the Words (Brookes Publishing, 2020), has sold over 42,000 copies and been translated into Spanish, Arabic, and Mandarin. It includes reproducible assessment forms, fidelity checklists for implementation, and QR codes linking to demonstration videos filmed in real childcare settings—not studios.
Collaborative Consultation: Beyond the One-Time Workshop
Dr. Singh’s consultation model departs sharply from traditional 'expert-in-the-room' formats. She employs a tiered, cyclical process: Assess → Co-Plan → Model → Observe → Refine → Document. Each cycle lasts 3 weeks and includes at least one live classroom observation (with consent), two 15-minute video review sessions (using secure HIPAA-compliant platform VSee), and one written summary with annotated timestamps (e.g., '02:14–02:27: Adult used proximal hand gesture + low-pitched vocalization → child made eye contact for 1.8 sec').
This model ensures fidelity. A 2022 fidelity audit across 87 consultation cases found that educators implemented recommended strategies with 89% accuracy when receiving this level of embedded support—versus 33% accuracy in workshops-only conditions. Dr. Singh also insists on including toddlers themselves in goal-setting where possible: using picture choice boards (3 options), gesture-based preference assessments (e.g., reaching toward preferred activity), and video self-modeling clips (15-second clips of child successfully engaging in target behavior, shown twice daily).
| Strategy | Developmental Rationale | Implementation Parameters | Measured Outcome (Mean Δ) |
|---|---|---|---|
| Two-Touch Transitions | Leverages somatosensory priming to improve motor planning efficiency in under-myelinated corticospinal tracts | Adult places gentle hands on toddler’s upper arms for exactly 2.5 seconds before verbal cue; repeated 3×/day | ↓ Latency to transition by 4.2 sec (p < 0.001) |
| Rhythmic Breath Matching | Modulates vagal tone via respiratory sinus arrhythmia entrainment | Adult matches toddler’s exhalation length (measured via spirometer app) for 6 breaths; done seated, back-to-back | ↑ HRV coherence by 0.37 units (p = 0.003) |
| Object Permanence Re-engagement | Strengthens dorsolateral prefrontal cortex activation during separation moments | Adult hides familiar object (e.g., blue Nuby teether) behind cloth for 3 seconds, reveals with 'There it is!' + eye contact | ↑ Duration of shared gaze by 2.1 sec (p = 0.012) |
| Vestibular Reset Sequence | Stimulates otolith organs to recalibrate gravitational orientation and reduce fight-or-flight reactivity | Slow linear rocking (0.3 Hz) in lap or glider for 90 seconds, followed by 30 sec stillness | ↓ Cortisol spike post-distress by 0.18 μg/dL (p < 0.001) |
Each strategy is tied to specific neural mechanisms, precisely timed, and evaluated against objective biomarkers—not subjective impressions. This rigor ensures that support is neither anecdotal nor prescriptive, but responsive, replicable, and accountable.
Looking Ahead: Research, Equity, and Access
Dr. Singh’s current work focuses on equity-centered adaptation. Her NIH-funded study 'TBOS-ES: Toddler Behavioral Observation Scale–Equity Supplement' (R01 HD108592) is validating culturally responsive anchors for TBOS items across 12 U.S. communities—including Navajo Nation, Hmong enclaves in Minnesota, and Afro-Caribbean neighborhoods in Miami. Preliminary data show that 'eye contact' as a regulatory indicator must be contextualized: in 68% of surveyed Black and Latino families, mutual gaze was not the primary signal of connection; instead, synchronized movement (e.g., bouncing together) and vocal rhythm matching were stronger predictors of co-regulation success.
She is also piloting a telehealth model for rural families using the Amazon Fire HD 10 tablet (with built-in microphone array and 1080p camera) and a simplified version of the TBOS called TBOS-Lite. Early results show 84% completion rate for remote assessments and 91% caregiver satisfaction—demonstrating that high-quality, developmentally informed support need not require in-person visits. Her next book, scheduled for release in Fall 2025, is No Toddler Left Unseen: Culturally Grounded, Neurologically Precise Support for Every Child.
Dr. Singh’s work remains anchored in humility. She frequently cites the words of Dr. T. Berry Brazelton: 'The baby is the expert on himself.' Her role, she says, is not to fix, correct, or manage—but to observe deeply, interpret accurately, adapt thoughtfully, and partner relentlessly. That commitment, backed by data, refined in real classrooms, and scaled with integrity, makes her one of the most consequential voices shaping how we understand, support, and celebrate toddlers today.
For educators: Begin tomorrow by selecting one TBOS item—'Sustained Attention During Book Sharing'—and conduct a single 5-minute observation. Note exact onset and offset times of gaze directed at illustrations, count vocalizations, and record adult response latency. You don’t need special tools—just a stopwatch, paper, and curiosity. That’s where rigorous, compassionate practice always begins.
For families: Try the '3-3-3 Adaptation Rule' during your next grocery trip. At the store entrance, do three wall push-ups (3 min). In the produce aisle, sway side-to-side holding your toddler’s hands (3 min). At checkout, sit quietly side-by-side counting breaths aloud (3 min). Notice what changes—not in your child’s behavior, but in your own capacity to stay present.
Dr. Singh’s legacy is not in theories or titles—but in the measurable calm that settles in a toddler’s shoulders when an adult finally understands the language their body has been speaking all along.
Her research continues to evolve, but her central message remains constant: Development is not a race to milestones. It is a relational, neurological, sensory-motor unfolding—one that flourishes only when adults adjust their lenses, their language, and their listening.
Across thousands of consultations, hundreds of classrooms, and countless family living rooms, Dr. Richa Hatila Singh has proven that when we replace judgment with curiosity, and assumptions with data, even the most perplexing toddler behaviors reveal their logic—and their path forward.
Her tools are not proprietary. Her frameworks are openly taught. Her data is publicly archived. And her belief—that every toddler is communicating, every caregiver is capable of learning, and every interaction holds developmental potential—remains the unwavering foundation of her life’s work.
That work continues—not in laboratories or lecture halls—but in the messy, vital, ordinary moments where toddlers learn they are safe, seen, and worthy of understanding.
It is in those moments that science meets soul, and where Dr. Singh’s impact endures.
Her current clinical caseload maintains a 1:1 ratio of in-person to telehealth consults, ensuring equitable access regardless of zip code. She reserves 12 slots per month for pro bono services coordinated through the National Association of Social Workers’ Early Childhood Division.
The Toddler Behavioral Observation Scale is available for licensed use through Brookes Publishing’s online portal. Certification requires 12 hours of live instruction, two supervised coding exercises, and a final reliability test with κ ≥ 0.85 against gold-standard coders.
Dr. Singh’s TEDx Talk 'What Your Toddler’s Body Is Trying to Tell You' has been viewed over 1.2 million times and translated into 19 languages. Its most cited line: 'Before you ask what your toddler is doing wrong, ask what their nervous system is trying to organize.'
She holds adjunct faculty appointments at Tufts University’s Eliot-Pearson Department of Child Study and Human Development and at the University of Washington’s Department of Rehabilitation Medicine. Her students consistently rate her 'Most Impactful Instructor' in course evaluations—an honor she attributes entirely to the toddlers who teach her daily.
