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Updated: May 13, 2026

Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
Published on: May 15, 2019
Nine-month-old infants prefer unattractive bodies over attractive bodies
Michelle Heron-Delaney1, Paul C Quinn, Kang Lee
1Department of Psychology, University of Sheffield, Sheffield S10 2TN, UK. michelle.delaney@uq.edu.au
Insights
Nine-month-old infants prefer less attractive male body shapes when heads are hidden. This suggests early body shape preferences are based on familiarity, not cultural ideals.
Area of Science:
- Developmental psychology
- Infant perception
- Body image research
Background:
- Infant perception of body shapes is not well understood.
- Cultural ideals of attractiveness may influence early preferences.
- Familiarity with certain body shapes could play a role.
Purpose of the Study:
- To investigate infant preferences for attractive versus unattractive male body shapes.
- To determine the age at which infants develop preferences for specific body types.
- To explore the role of familiarity versus cultural stereotypes in shaping these preferences.
Main Methods:
- Visual preference and habituation procedures were used.
- Infants (3.5, 6, and 9 months) were shown images of male body shapes.
- Looking behavior was recorded to assess preference and discrimination.
Main Results:
- Nine-month-olds preferred unattractive male body shapes over attractive ones when head information was obscured.
- Six-month-olds could discriminate between attractive and unattractive body shapes but showed no preference.
- 3.5-month-olds neither discriminated nor showed a preference.
- Preferences were only observed when facial cues were absent.
Conclusions:
- Infant preference for certain body shapes is influenced by exposure and familiarity.
- Early preferences may not be based on culturally defined attractiveness stereotypes.
- Perception of body shape in infants is complex and develops with age.
Abstract:
Infant responses to adult-defined unattractive male body shapes versus attractive male body shapes were assessed using visual preference and habituation procedures. Looking behavior indicated that 9-month-olds have a preference for unattractive male body shapes over attractive ones; however, this preference is demonstrated only when head information is obscured. In contrast, 6- and 3.5-month-olds did not show a preference for unattractive or attractive bodies. The 6-month-olds discriminated between the two categories, whereas the 3.5-month-olds did not. Because unattractive body shapes are more common than attractive/athletic body shapes in our everyday environment, a preference for unattractive body shapes at 9 months of age suggests that preferences for particular human body shapes reflect level of exposure and familiarity rather than culturally defined stereotypes of body attractiveness.
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