Final answer:
Schizophrenia is a serious mental illness that can cause confused speech, bizarre ideas, and childish behavior.
Step-by-step explanation:
Schizophrenia is a serious mental illness characterized by symptoms such as confused speech, bizarre ideas, and childish behavior. It affects approximately 1% of the population in the United States. People with schizophrenia may also experience hallucinations, delusions, and difficulty thinking.