Sure! Based on the information you've provided, here's how we can categorize the excerpts from the passage:
Claim (effect):
- "What is known is that the behavior is contagious."
- "The likelihood of yawning increases six fold, according to one study, after seeing someone else yawn."
- "Giordano said this behavior could be linked to mirror neurons in the brain."
Why are yawns contagious? Reason (cause):
- "As for yawn contagion, Giordano said it may be related to a phenomenon called social mirroring, where organisms imitate the actions of others."
- "Other behaviors fall into this category, such as scratching, leg crossing and laughing."
- "a phenomenon of social mirroring, where organisms imitate the actions of others."
- "seeing someone else yawn."
Feel free to ask if you have any further questions!