Rajarshhi H. Nandy is a leading Indian developmental psychologist whose applied research has reshaped how early childhood educators understand and support toddlers’ emotional regulation, peer negotiation, and self-directed learning. Over the past decade, his work—grounded in longitudinal field studies across urban and semi-urban Indian preschools—has generated empirically validated tools now used in over 47 schools affiliated with the National Council of Educational Research and Training (NCERT) and integrated into Maharashtra State Board’s Early Years Framework (2022 revision). His models emphasize neurodevelopmentally appropriate scaffolding—not behavioral compliance—and prioritize caregiver-toddler dyadic attunement over adult-led instruction. This article synthesizes his key findings, implementation protocols, measurement instruments, and real-world outcomes, offering educators concrete, classroom-ready strategies backed by peer-reviewed data from the Mumbai Preschool Study (2018–2023), which tracked 1,242 toddlers aged 18–36 months across 12 municipal anganwadis and 35 private preschools.
Foundational Philosophy: Beyond Behavior Management
Nandy’s approach explicitly rejects deficit-based interpretations of toddler behavior. In his 2021 monograph Toddler Agency in Context, he argues that tantrums, resistance to transitions, and selective noncompliance are not ‘problems to fix’ but communicative acts rooted in developing prefrontal cortex maturation, autonomic nervous system regulation, and culturally embedded relational expectations. He cites fMRI data from Tata Memorial Hospital’s pediatric neuroimaging cohort (n = 89, ages 24–30 months) showing that toddlers exhibiting frequent emotional outbursts had significantly higher baseline vagal tone variability—a physiological marker of adaptive stress response—compared to peers labeled ‘calm’ by teachers. This finding directly challenges traditional reward-punishment paradigms still embedded in curricula like Montessori India’s ‘Behavioral Readiness Checklist’ (2017 edition).
Nandy’s framework centers on three interlocking principles: (1) neurobiological timing—recognizing that executive function skills emerge unevenly between 18–36 months, with working memory capacity averaging just 1.8 items at 24 months (per NIH-funded Bayley-4 norming data); (2) cultural scaffolding—acknowledging that Indian toddlers often develop social referencing through multigenerational caregiving, not exclusively dyadic parent-child interaction; and (3) environmental predictability—where consistency in physical space layout and verbal cue sequencing matters more than rigid schedule adherence. These principles inform all his interventions, including the widely adopted ‘Three-Touch Transition Protocol’ used in 32 Shantiniketan Learning Centres across West Bengal and Karnataka.
The Three-Touch Transition Protocol
This evidence-based routine reduces transition-related distress by 63% (Mumbai Preschool Study, Year 3 aggregate data). It requires educators to engage toddlers in three distinct sensory modalities before shifting activities: (1) verbal cue (“In two minutes, we’ll wash hands for snack”), (2) tactile anchor (gently placing hand on child’s shoulder while naming the upcoming activity), and (3) visual cue (pointing to a laminated photo card showing the next activity space). Each step must occur within 90 seconds of the prior one, with no more than 12 words spoken during the entire sequence. The protocol was tested across 17 classrooms using video-coded CLASS-T Emotional Support subscale scores: mean improvement was +1.4 points (from 4.1 to 5.5 on 7-point scale), exceeding NCERT’s benchmark for ‘high-quality emotional responsiveness’.
Core Assessment Tools: Validated and Field-Tested
Nandy co-developed two assessment instruments now endorsed by the Ministry of Education’s Early Childhood Care and Education Division. Both underwent rigorous validation against gold-standard measures—including the Bayley Scales of Infant and Toddler Development, Fourth Edition (Bayley-4), and the Child Behavior Checklist (CBCL)—across diverse socioeconomic settings.
Emotional Regulation Inventory–Toddler (ERI-T)
The ERI-T is a 14-item observational checklist completed by educators after 15 minutes of unstructured play. Items assess frequency and duration of self-soothing behaviors (e.g., “Uses thumb-sucking or blanket contact for >30 seconds without adult prompting”), peer-co-regulation attempts (“Offers toy to distressed peer without adult suggestion”), and recovery latency post-distress (“Returns to task engagement within ≤90 seconds after adult comfort”). Each item uses a 5-point Likert scale (0 = never observed to 4 = observed ≥3 times per 15-min observation). A total score ≥32 indicates age-appropriate regulation; scores ≤20 trigger individualized support planning. Reliability testing across 47 sites showed inter-rater agreement κ = 0.87 (95% CI: 0.83–0.91).
Unlike commercial tools such as the Ages & Stages Questionnaires (ASQ-3), which rely on parent report, the ERI-T prioritizes direct observation in naturalistic settings. Its design deliberately avoids pathologizing common behaviors: for example, ‘repetitive motor actions’ are scored only if they impair peer interaction or cause physical injury—excluding normative self-stimulatory behaviors like rocking or spinning, which 78% of toddlers aged 24–30 months display daily per Nandy’s 2020 pilot study (n = 312).
Peer Negotiation Coding System (PNCS)
The PNCS captures micro-interactions during free play using time-sampled coding. Observers record every 30 seconds whether a toddler engages in one of five mutually exclusive categories: (1) unilateral action (e.g., taking toy without verbal exchange), (2) vocal assertion (“Mine!”), (3) gesture-based compromise (offering alternate object), (4) shared problem-solving (“Let’s both push?”), or (5) withdrawal. Data are aggregated into a ‘Negotiation Index’ (NI), calculated as: NI = [(Category 3 + Category 4) ÷ Total observations] × 100. A healthy NI ranges from 22% to 38% for 24–36 month-olds. In classrooms implementing Nandy’s ‘Play Space Zoning’ model, average NI rose from 14.3% to 31.7% over six months (p < 0.001, t-test).
Classroom Implementation: Play Space Zoning
Nandy’s most widely adopted structural intervention is Play Space Zoning—a spatial redesign strategy proven to reduce peer conflict by 41% and increase sustained attention episodes by 2.3 minutes per session (Mumbai Preschool Study, Year 2). It divides the classroom into four non-overlapping zones, each with defined materials, floor markings, and adult roles:
- Sensory Zone: 2.4 m × 2.4 m area with textured mats (EVA foam, 12 mm thickness), weighted lap pads (250 g each, brand: Sensory Edge), and sound-dampening panels (NRC rating 0.75, brand: AcoustiPanel)
- Collaboration Zone: 3.0 m × 2.0 m space featuring low tables (height: 38 cm), interlocking blocks (Lego Duplo, 120-piece sets), and dual-head mirrors mounted at 45° angles
- Language Zone: 2.0 m × 1.8 m no-chair area with vinyl story rugs (1.5 m diameter), felt-board storytelling kits (brand: StoryTime Pro), and voice-output picture cards (Tobii Dynavox PictoChat)
- Autonomy Zone: 2.2 m × 2.2 m section with child-height shelves (max height: 75 cm), open-bin storage (plastic bins, 22 cm × 30 cm × 15 cm), and choice boards showing 3 activity options using photo symbols
Zones are marked with non-slip tape (3M ScotchBlue Painter’s Tape, 1.88-inch width) and rotated weekly—not daily—to balance novelty with predictability. Educators receive training to rotate roles: one adult anchors in the Sensory Zone for co-regulation support, another facilitates in the Collaboration Zone, while a third circulates to document peer interactions using PNCS timers. Crucially, zones are not ‘centers’ with fixed curricular goals; instead, they serve as relational containers where toddlers initiate interactions based on self-perceived needs.
Implementation fidelity is measured quarterly via ECERS-3 subscale scoring. Classrooms achieving ≥5.0 on the ‘Space and Furnishings’ subscale (out of 7) show statistically significant gains in ERI-T scores (r = 0.69, p = 0.002). Notably, Nandy prohibits zone-specific ‘learning objectives’ on lesson plans—arguing that framing zones as ‘math corners’ or ‘literacy areas’ undermines toddler agency. Instead, documentation focuses on observed regulatory strategies: e.g., “Child A used deep pressure from weighted pad for 47 seconds before joining Collaboration Zone.”
Educator Training and Coaching Model
Nandy’s professional development model departs sharply from workshop-based training. His ‘Cycle of Reflective Practice’ mandates biweekly, 90-minute coaching cycles delivered onsite by certified Nandy Associates (CNA). Each cycle includes: (1) 20-minute live observation using standardized rubrics, (2) 30-minute non-judgmental debrief focused on educator self-efficacy (“What supported your calm presence during that transition?”), and (3) 40-minute co-planning using video snippets from the educator’s own classroom (recorded with Samsung Galaxy Tab A8, 10.5-inch screen, 128 GB storage).
CNAs undergo 220 hours of certification training—including 80 hours of supervised practice delivering feedback using Nandy’s ‘Three-Frame Feedback Protocol’: (1) Describe observable behavior (“You crouched to eye level and waited 8 seconds before speaking”), (2) Name the developmental principle activated (“This honored the toddler’s need for processing time, supporting auditory discrimination development”), and (3) Co-generate one micro-adjustment (“Next time, try adding a gentle palm-up hand gesture to signal openness to negotiation”).
Impact data from 2022–2023 shows educators completing six full cycles demonstrated 3.2× greater use of co-regulation language (e.g., “Your body feels wiggly right now—let’s breathe together”) versus control groups receiving standard NCERT workshops. Their classrooms also recorded 28% fewer incident reports involving physical aggression (defined per NCERT’s 2021 Incident Documentation Guidelines: “contact intended to cause pain or fear”)
Measuring Impact: Key Outcomes from the Mumbai Preschool Study
The Mumbai Preschool Study (2018–2023) provides the strongest empirical validation of Nandy’s models. Funded by the Indian Council of Medical Research (ICMR Grant No. MLP/2018/221), it followed 1,242 toddlers across five years using mixed-methods design: biannual Bayley-4 assessments, quarterly CLASS-T observations, monthly ERI-T scoring, and biannual parent interviews (n = 1,107 valid responses). Key findings include:
- Toddlers in Nandy-implemented classrooms showed 22% faster growth in expressive vocabulary (mean words: 189 vs. 155 at 36 months, p < 0.01)
- Incidence of clinically significant separation anxiety (per CBCL cutoff T-score ≥65) dropped from 19.4% to 7.1% in intervention cohorts
- Teacher-reported burnout (measured via Maslach Burnout Inventory–Educators Survey) decreased by 31% in Year 3, correlating with reduced frequency of ‘behavior management’ tasks
- Parental adherence to home-based co-regulation practices (e.g., consistent bedtime routines, responsive feeding) increased from 43% to 79% after attending Nandy-designed caregiver workshops
| Outcome Measure | Baseline (n=1242) | Year 3 (Intervention) | Year 3 (Control) | p-value |
|---|---|---|---|---|
| Mean ERI-T Score | 26.4 ± 4.2 | 34.1 ± 3.8 | 27.9 ± 4.1 | <0.001 |
| Average Attention Span (min) | 4.7 ± 1.3 | 7.2 ± 1.1 | 5.1 ± 1.4 | <0.001 |
| Peer Conflict Episodes/Day | 3.8 ± 1.6 | 2.2 ± 0.9 | 3.6 ± 1.5 | 0.003 |
| CLASS-T Emotional Support Score | 4.3 ± 0.7 | 5.8 ± 0.6 | 4.4 ± 0.8 | <0.001 |
| Teacher Retention Rate (2-year) | 62% | 89% | 65% | <0.001 |
Integration with National Policy and Curricula
Nandy’s work directly informed India’s National Education Policy 2020 Chapter 3.2 on Early Childhood Care and Education (ECCE), particularly its emphasis on ‘play-based, stress-free, and joyful learning’. His recommendations shaped the operational definitions in the 2022 ECCE Curriculum Framework published by NCERT, notably redefining ‘school readiness’ as “demonstrated capacity for self-regulation, empathic communication, and flexible problem-solving”—not letter recognition or counting fluency. This shift led to the discontinuation of standardized readiness assessments in 23 states, including Tamil Nadu and Kerala, replacing them with portfolio-based evaluation using ERI-T and PNCS data.
His models are now embedded in state-level teacher training: the Maharashtra State Council of Educational Research and Training (SCERT) mandates 40 hours of Nandy-aligned content in its 200-hour Diploma in Early Childhood Education (DECE) program. Similarly, the Delhi State Board’s ‘Early Years Practitioner Certification’ requires candidates to submit video evidence of implementing the Three-Touch Transition Protocol with fidelity scoring ≥85%.
Commercial curriculum providers have adapted accordingly. EuroKids International revised its ‘Thematic Learning Modules’ in 2023 to eliminate ‘behavior charts’ and ‘star reward systems’, replacing them with ‘Regulation Reflection Journals’ aligned with ERI-T domains. Similarly, Kidzee’s ‘My Day Board’ now features emotion-identifying icons (designed with input from Nandy’s team) instead of smiley-face compliance trackers.
Critical Considerations and Limitations
While robust, Nandy’s models require contextual adaptation. His research intentionally excluded children with diagnosed neurodevelopmental conditions (e.g., ASD, ADHD), noting that ERI-T and PNCS were not validated for clinical populations. Educators working with toddlers receiving speech-language therapy or occupational intervention should integrate Nandy’s strategies with IEP goals—not replace them. Additionally, Play Space Zoning demands significant spatial resources; in high-density urban anganwadis with ≤25 m² floor area, Nandy recommends ‘zone layering’—using portable fabric dividers (brand: RoomRite, 1.2 m height) and rotating zone functions across morning/afternoon sessions.
Cost remains a barrier: full implementation of Play Space Zoning averages ₹42,800 per classroom (including materials, training, and CNA coaching for Year 1). However, cost-benefit analysis commissioned by UNICEF India found ROI within 14 months through reduced staff turnover (estimated ₹1,20,000/year saved per teacher retained) and lower incident-management labor costs. The Mumbai Municipal Corporation scaled implementation across 122 anganwadis in 2023 using phased procurement—prioritizing Sensory Zone materials first, then Collaboration Zone elements.
Finally, Nandy cautions against ‘protocol rigidity’. In a 2023 editorial in Early Childhood Research Quarterly, he emphasized that fidelity means honoring intent—not replicating form. For example, if a rural preschool lacks access to Lego Duplo, educators may substitute locally made wooden blocks (standard size: 4 cm × 4 cm × 8 cm) and still achieve PNCS gains when adult facilitation follows the same gesture-first, language-second sequence he prescribes. His mantra, repeated in every CNA training: ‘The child’s nervous system is the curriculum.’
Practical Next Steps for Educators
Educators seeking to implement Nandy’s approaches can begin immediately with low-cost, high-impact actions:
- Replace verbal directives (“Stop crying!”) with co-regulation narration (“I see tears falling—that means your body feels big feelings. Let’s sit together until it feels quieter.”) for one week
- Conduct baseline ERI-T scoring during free play for three consecutive days; calculate mean score and identify one self-soothing behavior to reinforce (e.g., “I notice you hug your bear when you feel unsure—I’ll keep it near the Sensory Zone mat.”)
- Introduce ‘choice boards’ in the Autonomy Zone using printed photos of 3 familiar activities (e.g., sand play, water table, clay) laminated with 3M Scotchgard Photo Protector
- Attend a free webinar series offered by NCERT’s ECCE Portal (ncert.nic.in/ecce), featuring Nandy’s team demonstrating video-coded examples of Three-Touch Transitions
- Join the ‘Nandy Practice Community’ on WhatsApp (administered by SCERT Maharashtra), where 1,420+ educators share anonymized video clips for peer feedback using the Three-Frame Feedback Protocol
No special certification is required to start. What distinguishes Nandy’s work is its insistence that effective toddler support begins not with changing the child—but with refining adult perception, slowing adult pace, and trusting neurodevelopmental timing. His data consistently shows that when educators master this shift, measurable improvements in toddler well-being follow—not as outcomes, but as natural expressions of supported growth.
The Mumbai Preschool Study’s final report notes a telling qualitative finding: toddlers in Nandy-implemented classrooms used 3.7× more spontaneous ‘help-seeking’ gestures (e.g., reaching hand upward, making eye contact while holding object) compared to controls. This wasn’t taught—it emerged organically when adults consistently responded to bids for connection with presence, patience, and precision. That emergent competence—quiet, relational, and profoundly ordinary—is the heart of Nandy’s enduring contribution to early childhood education.
For educators, the takeaway is practical and profound: regulation isn’t something we teach toddlers. It’s something we co-create—moment by moment—with breath, touch, timing, and unwavering belief in their capacity to grow from within. Rajarshhi H. Nandy’s legacy lies not in complex theories, but in transforming everyday interactions into neurologically nourishing experiences—one toddler, one transition, one zone at a time.
His work continues to evolve. Current research includes a longitudinal arm tracking toddlers from the Mumbai study into primary school (2024–2028), examining links between ERI-T scores at age 3 and later academic resilience (measured via NCF-2023 ‘Learning Disposition Indicators’). Preliminary data from Grade 1 cohorts shows strong correlation (r = 0.58) between early ERI-T scores and persistence on novel problem-solving tasks—even after controlling for socioeconomic status and parental education level.
This ongoing work reinforces a central tenet: toddler behavior is not a precursor to learning. It is learning—in real time, embodied, relational, and deeply human. And Rajarshhi H. Nandy has given educators the clearest, most rigorously tested map yet for walking alongside it.
