Final answer:
Jeffrey, diagnosed with antisocial personality disorder in prison, is likely prescribed barbiturates for sleep induction. Barbiturates are sedatives that can help induce sleep.
Step-by-step explanation:
Jeffrey, diagnosed with antisocial personality disorder in prison, is likely prescribed barbiturates for sleep induction. Barbiturates are known for their sedative and hypnotic properties, making them effective for inducing sleep. In addition to their use in sleep induction, barbiturates can also act as anxiolytics and anticonvulsants, but it is sleep induction that is most relevant in this case.