Earlier than previously thought: Yawn contagion in preschool children

Area of Science:

• Neuroscience
• Developmental Psychology
• Behavioral Science

Background:

• Yawning is a complex motor action observed across species.
• Contagious yawning, triggered by visual or auditory stimuli of yawning, is a documented phenomenon in humans and animals.
• Prior research indicated a lack of yawn contagion in socially isolated children during experiments.

Purpose of the Study:

• To investigate the occurrence and timing of contagious yawning in preschool children within their natural social environment.
• To compare yawn contagion in a naturalistic setting versus artificial experimental conditions.
• To examine the influence of gender on contagious yawning in young children.

Main Methods:

• Video recording of 129 preschool children (2.5–5.5 years) in their classrooms during regular activities.
• Observing children's responses to yawn stimuli presented via video.
• Analyzing the onset of contagious yawning within a 2-minute window post-stimulus.

Main Results:

• Contagious yawning was observed in children across all tested age groups (2.5–5.5 years).
• Yawn contagion occurred rapidly, within 2 minutes of stimulus perception.
• The natural classroom setting proved more effective for eliciting contagious yawning than controlled experimental setups.
• No significant difference in contagious yawning was found between genders.

Conclusions:

• Preschool children exhibit contagious yawning, indicating an early development of this social behavior.
• Natural social interactions are crucial for observing yawn contagion in young children.
• While gender does not influence yawn contagion, children possess the foundational neural mechanisms for this social response.