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Psychology, Fifth Edition by Joni E. Johnston

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CHAPTER3

Bio Psycho What?

In This Chapter

  • The biology of psychology
  • The best communication system ever invented
  • The true meaning of “getting on your nerves”
  • Left-brained versus right-brained
  • Understanding brain plasticity

“Let’s brainstorm.” “Watch it, you pea brain.” “She’s the brains behind it.” When we listen to the words we use, it’s clear we know who rules the roost when it comes to human behavior: the brain.

To understand human nature, we must first understand how the brain functions because there’s a biological counterpart to every thought or feeling we have. As you’ll see, physical changes in the brain can produce dramatic changes in ...

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