Carl is diagnosed as having antisocial personality disorder. he tends to be loyal to his friends but exploits others. he is witty and articulate and lies with great skill. what aspect of carl's case is unusual for someone with an antisocial personality? a. people with antisocial personalities are rarely loyal to anyone.
b. people with antisocial personalities tend to withdraw from people, not exploit them.
c. people with antisocial personalities tend to be women, not men.
d. people with antisocial personalities are rarely witty and articulate.

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.