Question

Describe the biological model of abnormal behaviour.

Answer 1

• Genetic Inheritance: Disorders may be inherited through genes, making some individuals more vulnerable to certain mental illnesses (e.g., schizophrenia, bipolar disorder).
• Neurochemical Imbalances: Abnormal levels of neurotransmitters like serotonin, dopamine, or norepinephrine are often linked to disorders such as depression, anxiety, and schizophrenia.
• Brain Structure and Function: Structural abnormalities in the brain or damage due to injury or disease can result in abnormal behavior.
• Endocrine System: Hormonal imbalances, such as those involving cortisol or thyroid hormones, can influence mood and behavior.
• Infections and Toxins: Exposure to certain viruses or toxic substances may also contribute to the development of psychological disorders.

This model supports the use of medical treatments such as medication, electroconvulsive therapy (ECT), or neurosurgery to manage mental illness. However, it is often combined with psychological and social models for a more holistic understanding of abnormal behavior.