When it pays off to take a look: Infants learn to follow an object's motion with their gaze-Especially if it features...

Area of Science:

• Developmental Psychology
• Cognitive Neuroscience
• Infant Perception

Background:

• Early gaze following is crucial for social development.
• Both social cues and instrumental learning may influence infant attention.
• Understanding the factors that promote gaze following in infants is essential.

Purpose of the Study:

• To investigate how social features (schematic vs. reverse-contrast eyes) and gaze-contingent reinforcement affect 4-month-olds' gaze following.
• To determine the independent and combined effects of social cues and reinforcement on learning to attend to gaze-cued objects.
• To assess the role of eye perception in guiding infant attention.

Main Methods:

• Four experiments were conducted with 74 four-month-old infants.
• Infants viewed a turning block with either schematic or reverse-contrast eyes.
• Contingent reinforcement (elicited animation via eye tracking) was used in some experiments, with yoked controls lacking reinforcement.
• Gaze following behavior was systematically measured before and after training.

Main Results:

• Infants did not spontaneously follow the block's motion.
• Four-month-olds consistently followed the block after training when it displayed schematic eyes.
• When the block had reverse-contrast eyes, training influenced looking behavior but only when reinforcement was contingent.
• The presence of schematic eyes significantly improved gaze following after contingent reinforcement.

Conclusions:

• Four-month-old infants' gaze following is significantly enhanced by schematic eye cues, especially when coupled with contingent reinforcement.
• While some plasticity exists, findings underscore the critical importance of eye perception in directing infant attention.
• Social cues, particularly eyes, play a vital role in fostering early attentional development and social learning in infants.