Final answer:
Schizophrenia is a mental illness with symptoms like hallucinations and delusions. Genetic vulnerability and environmental stress interact to contribute to the development of schizophrenia.
Step-by-step explanation:
Schizophrenia is a serious mental illness characterized by symptoms such as hallucinations, delusions, and difficulty thinking. The signs of schizophrenia include the inability to differentiate between reality and imagination, inappropriate emotional responses, and problems with social situations. The development of schizophrenia is believed to involve a combination of genetic vulnerability and environmental stress. Research has shown that adoptees with a high genetic risk of schizophrenia were more likely to develop the disorder if they were raised in disturbed home environments. This suggests that both genetics and the environment play a role in the manifestation of schizophrenia.
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