Joint action coordination in 2½- and 3-year-old children

Area of Science:

• Developmental psychology
• Cognitive neuroscience
• Human-computer interaction

Background:

• Adults exhibit comparable proficiency in both individual and joint actions.
• The developmental trajectory of action coordination in early childhood remains underexplored.

Purpose of the Study:

• To investigate the development of action coordination in 2.5- and 3-year-old children.
• To compare joint action coordination with individual action performance in young children.

Main Methods:

• A sequential button-pressing game was employed, allowing for both joint and individual play.
• Performance accuracy and response timing variability served as key metrics for coordination ability.

Main Results:

• Significant improvements in joint action coordination were observed between 2.5 and 3 years of age.
• Three-year-olds demonstrated adult-like performance, performing equally well in both joint and individual tasks.
• Two-and-a-half-year-olds showed less accurate performance in joint actions compared to individual actions.

Conclusions:

• Two-and-a-half-year-olds experience difficulties in establishing coordinated joint actions with adult partners.
• Three-year-olds exhibit more developed joint action coordination skills, approaching adult levels.
• Action planning and control are potential cognitive factors influencing early joint action development.