Eye Tracking Lateralized Spatial Associations in Early Childhood.

Area of Science:

• Cognitive Development
• Developmental Psychology
• Spatial Cognition

Background:

• Infants often exhibit left-to-right spatial associations.
• These associations may shift to culture-specific biases in later childhood.
• Understanding this developmental shift is crucial for cognitive science.

Purpose of the Study:

• To determine the age at which left-to-right spatial associations change.
• To investigate the influence of numerical and non-numerical information on spatial biases.
• To explore the transition from universal to culture-specific spatial processing.

Main Methods:

• An eye-tracking paradigm was used with 320 children aged 1-5 years.
• Participants viewed a video with a 90° spatial transposition of items.
• Fixation times measured left-to-right versus right-to-left mapping biases across conditions.

Main Results:

• Children generally showed a left-to-right mapping bias.
• This bias decreased around age two, increased in 3- and 4-year-olds, and disappeared by age five.
• Stimulus type (ordinal vs. non-ordinal) did not affect spatial association laterality.

Conclusions:

• A temporary decrease in left-to-right processing occurs around age two.
• Children transition from infantile spatial biases to culture-specific ones during early childhood.
• Adults and older preschoolers lack a spontaneous left-to-right bias in this paradigm.