Mirror self-recognition in ni-Vanuatu toddlers: developmental trajectory and cultural validity

A key milestone in early self-development is mirror self-recognition: recognizing that the image in the mirror refers to oneself. Cross-cultural research has raised questions about both the developmental timing of this milestone and the validity of the mirror-mark test across diverse cultural contexts. Here, we document a developmental trajectory of mirror self-recognition in a rural horticulturalist community from Vanuatu (N= 56; age range: 17–36 months). In addition to the standard mirror-mark test, we included a leg-mark control test and assessed engagement with the mirror to examine task-specific challenges linked to limited mirror exposure. Moreover, we assessed convergent behavioral indicators of objective self-awareness (embarrassment and grooming responses) spontaneously shown in front of the mirror. Overall, 29% of children passed the mirror-mark test, with success rates increasing with age and the majority passing by the end of their third year (youngest passer: 24 months). Unlike previous studies in comparable small-scale communities, which report only low passing rates within the 18–24-month age range, our study demonstrates increasing passing rates beyond 24 months and reveals a clear developmental trajectory that stabilizes by 36 months. Mirror-mark performance correlated positively with both leg-mark performance and the spontaneous embarrassment and grooming. We discuss implications for the cultural validity of the mirror-mark test and emphasize procedural adjustments and convergent validity as keys to capturing developmental variation across cultures.

• Publication year

  2026

• Venue

  Frontiers in Developmental Psychology

• Publication date

  2026-02-19

• Fields of study

  Not labeled

• Identifiers
  DOI 10.3389/fdpys.2026.1690962
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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