Evolution and Deception

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Evolution and Deception
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Who Lies?

• Everyone
• 90 people admit being deceitful

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Level 1

• Most basic deception
• Example sexually deceptive orchids

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Level 2

• Ability to deceive in certain situations
• Example The Anglerfish

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Level 3

• The learned response
• Example A dog faking a broken leg

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Level 4

• The ability to perceive or think about anothers
  intentions, or beliefs, and then manipulate those
  beliefs with ones behaviour

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• Deception evolved as an ability to use others for
  ones selfish needs
• Evolutionary arms race

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Why do we lie?

• First, who do we lie to?
• Strangers
• Romantic Partners
• Parents