Is failure to point at a desired object in a 15‑month‑old child a sign of developmental delay?

Yes, failure to point at 15 months is a significant developmental concern that warrants immediate evaluation and referral.

A 15-month-old child who does not point to objects represents a red flag for developmental delay, particularly for autism spectrum disorder (ASD) and language delays, and requires prompt developmental screening and referral for early intervention services.

Why This Matters

Pointing is a critical milestone in social communication development that typically emerges between 9-12 months of age. By 15 months, the absence of pointing gestures—specifically initiating joint attention (IJA) behaviors where a child directs others' attention to objects of interest—is an established early marker for developmental concerns 1.

The Evidence on Pointing and Development

Autism Spectrum Disorder Risk:

• Reduced initiating joint attention (IJA) behaviors, including pointing, have been identified as early as 14 months in children later diagnosed with ASD 1
• During the second year of life, lower frequency of gesture use differentiates children with ASD from both typically developing children AND children with other developmental disorders 1
• A slower growth trajectory of IJA-related communication from age 15 months distinguishes siblings who subsequently develop ASD from those who do not 1

Language Delay Risk:

• Children who lack index-finger pointing at 12 months are at significantly higher risk for language delay at 24 months 2, 3
• Absence of pointing gestures at 18 months correlates with language delays 4
• Early pointers demonstrate faster word comprehension development, while late pointers show lexical delays before 18 months for comprehension and between 18-24 months for production 5
• Links between pointing and vocabulary are tighter than those between walking and vocabulary, supporting the interconnected nature of gesture and language development 6

What You Should Do Now

Immediate Actions:

1. Perform standardized developmental screening using a validated tool (e.g., Ages and Stages Questionnaire, PEDS) 7, 8

2. Assess other red flags for ASD at this age 1:

   • Does the child respond to their name?
   • Does the child follow your gaze or head turn (responding to joint attention)?
   • Does the child show objects to share interest with you?
   • Are there repetitive behaviors with objects (spinning, lining up)?
   • Is there reduced social attention or eye contact?

3. Evaluate language development specifically:

   • Word comprehension (should understand several words by 15 months)
   • Attempts at word production
   • Use of other gestures (waving, reaching, showing)

4. Check for global developmental concerns 7:

   • Gross motor: Should walk independently by 15 months
   • Fine motor: Should grasp and manipulate small objects
   • Social-emotional development

Critical Next Steps:

Refer immediately for:

• Early intervention services (for children under 3 years) - this is federally mandated and does not require a diagnosis 8
• Comprehensive developmental evaluation by a developmental-behavioral pediatrician or multidisciplinary team 1, 7
• Autism-specific screening if other ASD red flags are present 1

Important Clinical Pearls

Common Pitfalls to Avoid:

• Do NOT adopt a "wait and see" approach - early intervention improves outcomes with immediate and lasting effects 8
• Do NOT reassure parents that "boys develop later" or "Einstein didn't talk until age 3" - these delay diagnosis and treatment
• Do NOT wait until the 18-month visit for screening if concerns exist now 7, 8

Nuances to Consider:

• The absence of pointing is more concerning than delayed walking for predicting language and social communication problems 6
• Index-finger pointing (more precise) is more predictive than whole-hand pointing 2, 3
• Even in bilingual children, absence of index-finger pointing at 12 months predicts language delay at 24 months 3

Prognostic Information: While not all children who don't point will have ASD or significant delays, the evidence is clear that this represents a meaningful risk marker requiring action. Children with developmental delays benefit from multidisciplinary therapy, and earlier identification allows for better outcomes 9, 10.

The prevalence of developmental delay in community studies ranges from 9-15% of children, with language delay being the most common domain affected 8, 10. Your clinical suspicion at 15 months provides a critical window for intervention.