Contagious Yawning Insights

Zoe discusses yawning, a universal yet mysterious behavior. Yawning is contagious, and theories suggest it may be linked to carbon dioxide levels, boredom, or brain cooling. Research shows yawning is related to brain size and neuron count. Contagious yawning, seen in humans, primates, and dogs, may be a social cue or signal. Age affects susceptibility to contagious yawning, challenging the empathy theory.

At what stage of development has yawning been observed in humans?

• At birth

• In fetuses as early as 11 weeks

• During adolescence

• Only in adults

What is one of the most intriguing aspects of yawning?

• It is contagious

• It can be done on command

• It is not contagious

• It is unique to humans

Which theory suggests yawning is linked to carbon dioxide levels?

• Boredom theory

• Brain cooling theory

• Carbon dioxide buildup theory

• Empathy theory

What recent research finding relates yawning duration to?

• The size of the lungs

• The length of the tongue

• The size of the brain and neuron count

• The size of the mouth

What did Gordon Gallup propose about the purpose of yawning?

• To express boredom

• To cool the brain

• To increase oxygen intake

• To signal hunger

According to Dr. Robert Provine, when do people often yawn?

• When they are eating

• When they are hungry

• When they are changing physiological states

• When they are exercising

What percentage of people are susceptible to contagious yawning?

• 100%

• 75%

• 60%

• 30%

Which animals are known to yawn contagiously?

• All mammals

• Humans, primates, and dogs

• Only humans

• Only primates

What factor has recent research identified as influencing contagious yawning?

• Gender

• Age

• Diet

• Height

What is one proposed social function of contagious yawning?

• To express happiness

• To show dominance

• To signal a need for attention

• To indicate hunger