A report in Proceedings
of the Royal Society B described
a study that showed fish can learn fear from role models. According to the
study’s authors, environment
can influence the social transmission of fear. The study showed how risk
aversion can be learned. The researchers also suggest their study may shed
light on how fear disorders such as post-traumatic stress disorder (PTSD)
develop in humans, which research shows can be influenced by social environment.
For example, PTSD symptoms can be acquired from friends or family who have
suffered trauma.
http://news.sciencemag.org/brain-behavior/2015/07/fish-learn-fear-their-role-models
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