Biopsychology is the application of the principles of biology to the study of physiological, genetic, and developmental mechanisms of behavior in humans and other animals. It typically investigates at the level of neurons, neurotransmitters, brain circuitry, hormones and the evolutionary and developmental processes that underlie normal and abnormal behavior.
- 3.1: Human Genetics
- Psychological researchers study genetics in order to better understand the biological basis that contributes to certain behaviors. While all humans share certain biological mechanisms, we are each unique. And while our bodies have many of the same parts—brains and hormones and cells with genetic codes—these are expressed in a wide variety of behaviors, thoughts, and reactions.
- 3.2: The Brain and Spinal Cord
- The brain is a remarkably complex organ comprised of billions of interconnected neurons and glia. It is a bilateral, or two-sided, structure that can be separated into distinct lobes. Each lobe is associated with certain types of functions, but, ultimately, all of the areas of the brain interact with one another to provide the foundation for our thoughts and behaviors. In this section, we discuss the overall organization of the brain and the functions associated with different brain areas.
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