Behavioral neuroscience, also known as biological psychology, biopsychology, or psychobiology 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. Often, experiments in behavioral neuroscience involve animal models (such as rats and mice, and non-human primates) which have implications for better understanding of human pathology and therefore contribute to evidence-based practice.