Final answer:
Lobotomies were developed as a psychiatric practice to treat various disorders, including personality and mood disorders. The procedure involved severing connections in the brain and was common in the mid-20th century before the advent of antipsychotic drugs.
Step-by-step explanation:
A lobotomy was developed as a psychiatric practice to treat various disorders in the mid-20th century. It involved severing the connections between the prefrontal cortex and other areas of the brain. This procedure was used to treat personality disorders, mood disorders, and psychoses. However, the exact correlation between the procedure and changes in mood and personality is not well understood.