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Hormonal theories are explanations in psychology that attribute certain behaviors to hormonal imbalances, fluctuations in hormone levels, or interactions between hormones and other biological systems.
Chemical messengers that transmit signals between nerve cells (neurons) in the brain.
A network of glands that secrete hormones into the bloodstream to regulate various bodily functions and behaviors.
The ongoing argument about whether human behavior is primarily influenced by genetics (nature) or environmental factors (nurture).