BIOLOGICAL APPROACHES TO PSYCHOPATHOLOGY: GENETIC, NEUROCHEMICAL, AND BRAIN-BASED EXPLANATIONS

Abstract

The biological approach to psychopathology provides a scientific framework for understanding mental disorders through genetic, neurochemical, and brain-based mechanisms. This perspective views psychological disorders as conditions associated with abnormalities in biological functioning, including genetic predispositions, neurotransmitter imbalances, and structural or functional changes in the brain. Genetic research highlights the role of hereditary factors in increasing vulnerability to mental disorders, supported by evidence from family, twin, and adoption studies. Neurochemical explanations emphasize the influence of neurotransmitters such as serotonin, dopamine, norepinephrine, glutamate, and GABA in regulating mood, cognition, and behaviour. Imbalances in these chemical systems are strongly linked to disorders such as depression, schizophrenia, and anxiety. Brain-based explanations further identify the involvement of specific brain regions, including the prefrontal cortex, amygdala, hippocampus, and basal ganglia, in various psychological conditions. Advances in neuroimaging techniques have significantly enhanced the understanding of these biological mechanisms. While the biological approach has contributed to effective medical treatments and scientific understanding, contemporary perspectives emphasize integration with psychological and social factors through the biopsychosocial model to provide a comprehensive explanation of mental health and illness.