Evolutionary Psychology - Communication

Examples of short range signals
- Electric fields
- Hydrodynamics
- Touch
Are chemical signals long, or short range?

Long range
Rarest pigment colour

Blue
Five main chemical pigment groups
- Carotenoids
- Melanins
- Purines
- Porphyrins
- Pteridines
Which pigments come from diet?

Carotenoid
What are the two colour changing mechanisms?
- Morphological (slow)
- Physiological (fast)
Types of sound production
- Percussion (hitting something)
- Stridulation (rubbing something)
Properties of pheromones
- Slow
- Non-directional
- Non-continuous
Communication can help with ...
- Defense
- Foraging
- Mating
- Parenting
Purposes of alarm calls
- Kin protection
- Mate investment
- Referential alarm calling
What is referential alarm calling?

Adjusting signaling behviour according to audience
Index signals are

Honest and unfakeable
What kind of signal is bird song (mating)

An index signal
What is the Handicap principle?

When signals are honest because they are costly to produce

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Ant

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Evolutionary Psychology - Communication

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Updated

2022-12-14T20:05:41Z

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