Biological psychology can lead to greater understanding and treatment of diseases and disorders that affect consciousness and the nervous system, such as schizophrenia, Alzheimer’s and Parkinson’s disease. You may decide to study the cognitive effects of drugs and examine how certain substances interact with the brain and the development of pharmaceutical drugs to treat psychiatric disorders. Specifically, the medical use of marijuana has sparked ongoing debate about how the drug affects brain development, whether it causes side effects such as memory loss, and whether its medical benefits outweigh any of these potential, deleterious risks. If you are more philosophically inclined, you can explore biology and free will and ask whether human beings are capable of free will and moral decision-making, or are we hardwired by the pre-established circuitry of our brains? As scientists continue to broaden their knowledge of the brain and identify the biological basis of behavior, concepts such as individual responsibility come into question. Is free will just an illusion and one’s actions merely a reflection of chemical, biological and environmental factors?
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