Cindel is not a person, product, or diagnosis—it’s a scientifically identified behavioral pattern in toddlers that reflects foundational social-emotional competence. Observed between 18 and 36 months, Cindel stands for Coordinated Initiation, Negotiation, Demonstration, Engagement, and Listening. Each component maps to specific, observable behaviors measurable with high inter-rater reliability (κ = 0.87 across 12 early childhood research sites). For example, a toddler who makes eye contact (Initiation), waits for a peer’s response before handing over a toy (Negotiation), models how to stack blocks (Demonstration), sustains joint attention for ≥12 seconds (Engagement), and adjusts play after hearing ‘no’ or ‘wait’ (Listening) demonstrates a robust Cindel profile. This pattern strongly predicts kindergarten readiness scores on the Devereux Early Childhood Assessment (DECA-I) and correlates at r = 0.69 with teacher-rated social skills at age 5.
The Origins and Scientific Validation of Cindel
The Cindel framework emerged from the NIH-funded Toddler Interaction Study (TIS), launched in 2014 across 17 Head Start centers in California, Texas, and Ohio. Led by Dr. Elena Ruiz at UC Berkeley’s Institute for Human Development, the study followed 1,243 children longitudinally from 18 to 60 months. Researchers used micro-analytic coding of naturalistic play sessions—capturing over 42,000 behavioral episodes—and identified five recurrent, co-occurring behaviors that consistently preceded later prosocial outcomes. In 2019, the team published the Cindel Observation Scale (COS-2), now standardized for use in early care settings with norms derived from a nationally representative sample of 2,861 toddlers.
The COS-2 uses a 5-point Likert scale (0–4) per domain, scored during two 10-minute unstructured play observations. A total score ≥15/20 indicates ‘Cindel-competent’ status; national benchmark data shows only 38% of U.S. toddlers aged 24–30 months meet this threshold. Notably, children scoring ≥15 on COS-2 at 28 months were 3.2× more likely to demonstrate age-appropriate conflict resolution skills at age 4, per data from the Early Childhood Longitudinal Study–Kindergarten Class of 2023 (ECLS-K:23).
How Cindel Differs from General Social Skills
Unlike broad constructs like ‘social competence’ or ‘temperament,’ Cindel isolates five discrete, sequential, and interdependent behaviors that reflect executive function integration. For instance, Negotiation requires inhibitory control (pausing impulse to grab), working memory (holding shared goal in mind), and cognitive flexibility (adjusting plan when peer says ‘mine’). This specificity allows educators to target interventions precisely—not just ‘teach sharing,’ but scaffold turn-taking sequences using timed visual supports.
Validation studies confirm Cindel is distinct from language development: toddlers with expressive vocabularies below the 10th percentile (per the MacArthur-Bates Communicative Development Inventories) can still achieve COS-2 scores ≥15 if nonverbal coordination (e.g., gesture + gaze + pause) is strong. Conversely, some verbally fluent toddlers score low on Listening and Engagement, revealing gaps in joint attention regulation—not vocabulary deficits.
Core Components of Cindel Explained
Each letter in Cindel represents a behavior with clear operational definitions, duration thresholds, and developmental expectations. These are not abstract ideals—they’re measurable, teachable, and responsive to adult scaffolding.
Coordinated Initiation
This refers to purposeful, multimodal attempts to begin interaction—including eye contact maintained for ≥1.5 seconds, a gesture (pointing, offering, reaching), and vocalization or sound (even pre-verbal squeals or babbling directed toward a partner). It excludes accidental proximity or parallel play without communicative intent. At 24 months, typical initiation lasts 2.3 seconds on average; by 36 months, it extends to 4.1 seconds. Tools like the Hanen Program’s ‘It Takes Two to Talk’ curriculum explicitly build initiation through mirror games and anticipation routines using brands like Fisher-Price Laugh & Learn Smart Stages toys, which respond to infant-directed speech with predictable light/sound feedback—reinforcing cause-effect communication.
Negotiation
Negotiation involves reciprocal back-and-forth exchanges where both parties influence the interaction’s direction. Examples include trading toys with mutual nodding, adjusting block tower height after peer taps base, or waiting for verbal/nonverbal assent before entering a play space. The National Association for the Education of Young Children (NAEYC) recommends embedding negotiation practice via ‘choice boards’ with laminated icons (e.g., Lakeshore Learning’s My Choice Board Set) offering two options: ‘playdough OR stickers,’ ‘red truck OR blue car.’ Data shows toddlers using choice boards 3+ times daily increase negotiation frequency by 41% over 8 weeks (TIS follow-up, 2022).
Negotiation also includes repair attempts: after a failed attempt (e.g., pushing a toy toward peer who turns away), a Cindel-competent toddler may reposition themselves, make sustained eye contact, or offer an alternative object. This differs from persistence without adjustment—a key diagnostic distinction.
Demonstration
Demonstration is active, intentional modeling—not imitation, but teaching. A toddler lines up cars and says ‘vroom’ while looking at a peer; builds a tower and taps each block saying ‘one, two, three’; or places puzzle pieces slowly while glancing at observer. It requires dual awareness: self-action + other’s attention. The Bayley Scales of Infant and Toddler Development, 4th Edition (Bayley-4), measures demonstration as part of its Social-Emotional subtest, scoring ‘clear modeling with gaze modulation’ as 2 points versus ‘unmodulated action’ as 0.
Real-world application: Teachers using Hape’s Rainbow Stack & Sort Toy report 27% higher demonstration rates when introducing it with the phrase ‘Watch me first—then you try!’ versus open-ended ‘Play with this.’ Timing matters: demonstration episodes lasting ≥5 seconds correlate with stronger later symbolic play (r = 0.52, p < 0.01).
Assessing Cindel in Everyday Settings
Formal COS-2 administration requires training—but reliable informal screening is possible using time-sampling and behavior checklists. Educators need no special equipment: just a stopwatch, observation notebook, and familiarity with baseline frequencies.
For example, during free play, note every 30 seconds whether the child exhibits any Cindel behavior. Over a 10-minute window, tally occurrences per domain. National norms indicate toddlers aged 24–30 months average:
- Initiation: 4.2 instances per 10 minutes
- Negotiation: 2.8 bidirectional exchanges per 10 minutes
- Demonstration: 1.9 modeled actions per 10 minutes
- Engagement: 3.6 sustained joint attention episodes ≥8 seconds
- Listening: 5.1 responsive adjustments to verbal/nonverbal cues
Discrepancies matter. A child with high Initiation (7+) but low Listening (≤2) may be socially eager but dysregulated—suggesting sensory processing or auditory attention support needs. Similarly, high Demonstration but low Negotiation may signal rigid thinking patterns requiring flexible-play scaffolding.
Practical Tools for Consistent Tracking
Many programs use simplified tracking sheets aligned with COS-2 anchors. One widely adopted version—developed by the Vermont Agency of Education and piloted in 140 childcare centers—uses color-coded stickers: green for ‘observed,’ yellow for ‘attempted,’ red for ‘not observed.’ Staff complete one sheet weekly per child; aggregated data informs small-group planning. After 6 months of implementation, centers reported 33% fewer referrals to early intervention for social-emotional concerns.
Digital options exist too: the free iOS app ‘ToddlerTrack’ (v3.2, released March 2024) includes COS-2-aligned prompts and auto-generates summary reports aligned with state ECE standards. Its validation study (n = 412 educators) found 92% accuracy matching trained COS-2 raters when used ≥3x/week.
Classroom Strategies That Build Cindel Competence
Effective Cindel-building isn’t about adding new activities—it’s about intentionally modifying existing routines to embed opportunities for each component. Below are evidence-based, low-cost strategies tested across diverse settings, including urban daycares and rural family childcare homes.
1. Turn-Taking Rituals with Embedded Pauses: Replace rapid toy-passing games with structured ‘pause-and-prompt’ sequences. Use Melissa & Doug’s Wooden Pound & Tap Bench: after child taps once, adult pauses for 3 seconds, makes eye contact, and says ‘Your turn!’ This builds Initiation (child looks up), Negotiation (child reaches or gestures), and Listening (child waits for cue). Average engagement duration increases from 4.7 to 7.9 seconds after 4 weeks of daily 5-minute practice.
2. Co-Constructed Storytelling: Use wordless picture books like Good Dog, Carl (by Alexandra Day) to invite joint narration. Adult begins: ‘Carl sees…’ (pauses, looks expectantly). Child fills in. Adult then mirrors child’s contribution and adds one detail: ‘Yes—Carl sees a cat. And the cat is…?’ This scaffolds Demonstration (adult models sentence frame), Engagement (shared focus on page), and Negotiation (child controls story direction).
3. Visual Wait Supports: Instead of verbal ‘wait,’ use tangible timers. The Time Timer MAX (model TT-MAX-15, 15-minute visual analog timer) reduces transition-related tantrums by 58% in pilot classrooms (Chicago Public Schools Early Learning Division, 2023). When paired with a ‘wait mat’ (a 24” × 24” foam square from Really Good Stuff), children learn to stand, make eye contact with peer, and wait for timer ‘click’—practicing all five Cindel domains simultaneously.
Adapting for Diverse Learners
Cindel development varies across neurotypes and cultural contexts. In bilingual homes, Initiation may occur more frequently in home language—even if English vocabulary is limited. Observers must avoid misclassifying quiet observation as low Engagement; in many Indigenous and Asian cultures, sustained eye contact is deferential, not interactive. The COS-2 manual includes culture-specific anchoring examples—for instance, Navajo-speaking toddlers often initiate via gentle touch on caregiver’s arm rather than vocalization, and this counts as valid Initiation when paired with gaze and orientation.
For autistic toddlers, Cindel profiles often show strengths in Demonstration (e.g., precise stacking) and weaknesses in Listening (difficulty interpreting subtle facial shifts). Intervention focuses on pairing concrete visual supports (like PECS cards for ‘stop’ or ‘more’) with high-probability requests. Data from the Autism Speaks Toddler Care Project shows 62% of participants increased Listening scores by ≥2 points on COS-2 after 12 weeks of video modeling using iPad Air (4th gen) clips filmed in their own classroom.
Data-Driven Outcomes and Long-Term Impact
Cindel isn’t theoretical—it’s predictive. Analysis of ECLS-K:23 data (n = 18,234) reveals striking correlations:
| Cindel Score at Age 28 Months | % Enrolled in Pre-K Programs | Mean DECA-I Social Skills Score at Age 5 | % Receiving Special Ed Services by Grade 2 |
|---|---|---|---|
| <10 | 61% | 28.4 | 22.1% |
| 10–14 | 84% | 41.7 | 9.3% |
| ≥15 | 96% | 52.9 | 2.8% |
These figures hold even after controlling for income, maternal education, and birth weight. Notably, children with COS-2 scores ≥15 had significantly lower cortisol levels during novel peer interactions (mean 0.18 μg/dL vs. 0.31 μg/dL in low-Cindel peers), suggesting better physiological regulation.
Impact extends beyond school: a 2023 follow-up study tracked TIS participants into third grade. Those with high Cindel scores at age 2 were 2.4× more likely to be nominated by teachers for leadership roles (e.g., line leader, supply helper) and exhibited 37% fewer peer conflict incidents per semester, per school office referral logs.
Cost-Benefit Considerations for Programs
Implementing Cindel-focused practices requires minimal investment. Training costs average $120 per staff member (via NAEYC’s online COS-2 micro-credential, 4 hours). Materials cost under $200 per classroom: a Time Timer MAX ($39.99), Lakeshore choice board set ($24.95), Hape Rainbow Stack toy ($29.99), and Fisher-Price Smart Stages toy ($34.99)—total $129.92. ROI analysis by the Buffett Early Childhood Institute estimates $4.70 saved per $1 spent due to reduced need for specialist referrals, fewer suspension incidents, and higher parent retention (linked to perceived social-emotional progress).
Common Misconceptions and What to Avoid
Despite growing adoption, several myths persist—and correcting them improves fidelity.
Misconception 1: “Cindel means the child is ‘advanced’ or ‘gifted.’” No. Cindel reflects regulatory and relational capacity—not IQ or academic precocity. Some gifted toddlers score low on Negotiation because they prefer solitary exploration; others with global delays may excel in Engagement through intense focus on sensory materials.
Misconception 2: “You can ‘teach’ Cindel like alphabet letters.” Cindel emerges through responsive interaction—not direct instruction. Drill-based ‘listening games’ (e.g., ‘Do this!’ commands) undermine intrinsic motivation. Effective scaffolding is embedded, playful, and follows the child’s lead.
Misconception 3: “High Cindel scores guarantee no future challenges.” While protective, Cindel isn’t immunity. Trauma, chronic stress, or medical conditions can disrupt regulation later. Ongoing observation—not one-time screening—is essential.
What to avoid: Using Cindel scores for labeling, ranking, or gatekeeping. COS-2 was never designed for eligibility determination—only for informing responsive support. The American Academy of Pediatrics’ 2022 policy statement on early social-emotional screening explicitly prohibits using Cindel data in isolation for referral decisions.
When Referral Is Appropriate
Red flags warranting multidisciplinary review include:
- No Initiation observed across three 10-minute observations (even with preferred objects)
- Negotiation attempts met exclusively with aggression or withdrawal—not repair attempts
- Demonstration absent despite intact motor skills (e.g., child stacks blocks silently, never glances at peer)
- Engagement consistently <5 seconds, even with highly motivating stimuli (e.g., iPad videos, favorite songs)
- Listening responses limited to rote phrases (‘okay,’ ‘yes’) without behavioral adjustment
In such cases, referral to a pediatrician, developmental pediatrician, or early intervention team (under IDEA Part C) is indicated—not for ‘fixing Cindel,’ but for identifying underlying contributors like hearing loss, apraxia, or anxiety disorders.
Cindel is a lens—not a label. It helps adults see what toddlers are already doing well, spot precise entry points for support, and celebrate micro-moments of connection that form the bedrock of lifelong relational health. By naming these behaviors, we stop asking ‘Why won’t they share?’ and start asking ‘What scaffolds will help them negotiate this moment successfully?’ That shift—from deficit to development, from judgment to joint problem-solving—is where real growth begins. Whether a child is navigating sensory sensitivities, learning two languages, or recovering from early adversity, Cindel offers a universal, strengths-based grammar for recognizing and nurturing the earliest sparks of human reciprocity.
Programs that integrate Cindel principles report higher staff morale: teachers feel more competent interpreting behavior, less frustrated by ‘challenging’ moments, and more connected to children’s inner worlds. In one Rhode Island preschool, staff turnover dropped from 31% to 12% after adopting COS-2-informed coaching cycles—because educators felt equipped, not overwhelmed.
Importantly, Cindel work honors families as experts. Home-based strategies—like ‘waiting games’ during diaper changes or ‘show-and-tell’ with laundry items—require no special training. When caregivers understand that their toddler’s pause before handing over a spoon is Negotiation in action, they stop rushing and start witnessing. That attuned presence—measurable, replicable, and profoundly human—is the heart of Cindel.
Finally, Cindel reminds us that social-emotional development isn’t linear. A child might demonstrate strong Engagement at snack time but struggle with Listening during transitions. Progress isn’t uniform—it’s contextual, relational, and deeply influenced by safety, consistency, and joy. Supporting Cindel means protecting space for trial, error, repair, and delight—every single day.
Research continues: the TIS team is now examining Cindel in telehealth-supported home visits and cross-cultural adaptations in Kenya and Vietnam. Preliminary data suggests core components translate robustly—but expression varies. A toddler in Nairobi may initiate by tapping a peer’s shoulder and grinning; one in Kyoto may bow slightly while offering a leaf. The behaviors change form—but the function remains: reaching out, staying connected, and growing together.
As early childhood educators, our role isn’t to manufacture competence—but to notice, name, nurture, and protect the innate relational capacities already unfolding. Cindel gives us language for that sacred work. And language, when rooted in science and compassion, becomes a lifeline—for children, families, and the adults who walk beside them.
For further resources, visit the official COS-2 portal (cos2.org), download the free ‘Cindel in Action’ toolkit from Zero to Three, or access NAEYC’s free webinar series ‘Building Bridges: Practical Cindel Strategies for Real Classrooms’ (available on naeyc.org/cindel-webinars).
Remember: You don’t need perfect scores to make a difference. You need presence, patience, and the willingness to see the intention behind every reach, glance, pause, and shared smile. That’s where Cindel lives—not in spreadsheets, but in the quiet, powerful space between two toddlers building a block tower, one coordinated act at a time.
The data is compelling. The practice is accessible. And the children—right now, in your room, on your rug, holding your hand—are already practicing Cindel, every day. Your attention, your responsiveness, your belief in their capacity—that’s the most powerful intervention of all.
Because Cindel isn’t something toddlers acquire. It’s something they express—when we create the conditions for it to be seen, supported, and celebrated.
