Milestonesocial· 2mo–4mo

Smiles responsively at caregiver's face and voice

Infant produces a true social smile in response to a familiar caregiver's face, voice, or gaze — distinct from reflexive neonatal smiling.

Unknown

What the research says

Referenced across 1 developmental framework: bowlby_ainsworth_attachment_theory

Full quotes, source languages, and document links coming soon as we finish the source-evidence indexing pass.

Activities for this (11)

social0mo–6mo

Sound Garden

Parent plays different gentle sounds for baby — crinkling paper, tapping a glass, humming, shaking a jar of rice — and the agent coaches the parent to observe baby's reactions to different timbres, volumes, and rhythms. This activity explores early aesthetic sensitivity through auditory experience.

social0mo–6mo

Calm Connection

Parent holds baby in quiet stillness with sustained eye contact. The agent coaches the parent to observe baby's gaze regulation, body relaxation, and emotional co-regulation during this contemplative pause. This activity builds early mindfulness and relational presence.

social0mo–6mo

Babble Back — A Sound Conversation

Parent engages baby in a vocal turn-taking game, copying baby's sounds and adding new ones. Agent guides parent to observe the variety and intentionality of babbling while making the interaction feel like a warm, natural conversation with their baby.

social0mo–6mo

Baby massage with gentle narration

Parent gives baby a slow, gentle massage on legs, arms, back. Agent offers sparse, tender prompts — less instruction, more permission. Observations track how baby receives touch and how parent tunes the pressure to baby's cues.

social0mo–6mo

Face gazing

Parent holds baby 8-12 inches from their face and allows sustained mutual gaze. Agent's prompts are sparse — mostly permission to do less. Observations track reciprocal gaze and parent's comfort with silence.

social0mo–6mo

Serve-and-return conversation

Parent watches for baby's 'serves' (a sound, a gaze, a wiggle) and responds with something similar — the root of all future conversation. Agent coaches the parent to wait, notice, return. Observations track each phase separately: reading the serve, returning in kind, baby's return signal, and sustained exchange.

social0mo–3mo

Face-to-Face Fun Time

A gentle, engaging activity where you help your baby practice focusing on your face, building early social connection and attention skills.

social1mo–3mo

Happy Hello Game

A gentle, face-to-face activity where you help your baby recognize you and express happiness when you approach.

social0mo–3mo

Mirror bonding

This helps strengthen the bond between your baby and you. Observing how you show affection to your baby is incredibly important. Whether it s a warm hug, a back stroke, a quick kiss, or cute small talk, these actions will teach your baby how to be affectiona

social0mo–3mo

Storytime

This helps strengthen the bond between you and your baby. The activity consists of telling your baby a story. You can make it up as you go, or borrow it from a storybook, but make sure to tell it directly to your baby, and highlight vocabulary words that he

social0mo–3mo

Sharing Family Stories

Parent shows baby a family photo and talks about the people in it, building face recognition, social awareness, and early language exposure. The agent coaches the parent to observe social engagement, visual attention to faces, and bonding responses.

Formal assessments

No matching assessment items indexed yet.

Standardised assessment view

2 instruments measure this construct. The construct page shows how each one approaches it and at what age range.

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