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that age is eighteen, nineteen, twenty, or twenty-one, as determined by the law of each jurisdiction.
(p. 113)
insanity tests — Tests to determine legal and moral liability. (p. 116)
“right and wrong” test — An insanity test that claims that defendants are not legally responsible
for their acts if, due to a defect of the mind, at the time of the crime they were unable to understand
the difference between right and wrong. (p. 118)
M’Naghten rule — The insanity defense rule requiring proof that because of mental disease or
defect defendants did not know the scope or character of their actions. (p. 118)
“substantial capacity” test — A test to determine criminal responsibility based on whether the
defendant could (1) distinguish between right and wrong or (2) conform his or her conduct to the
requirements of law. (p. 120)
guilty but mentally ill — A defendant may be found guilty but mentally ill if all the following are
found beyond a reasonable doubt: (1) defendant is guilty of offense; (2) defendant was mentally ill at
time offense was committed; (3) defendant was not legally insane at time offense was committed. (p.
121)
diminished capacity defense — A defense for criminal responsibility based on the fact that because
of mental or emotional conditions, the defendant did not possess the required mens rea for
conviction of crime charged. (p. 125)
competency to stand trial — Defendants must have the ability to cooperate with their attorneys and
the ability to understand the charges and proceedings against them. (p. 128)
criminal liability of corporations — The rules for making corporations liable for actions taken by
officers, directors, or employees. Corporations can be vicariously criminally liable for actions of
their agents if the offense is minor, a duty is specifically assigned to a corporation, a statute
explicitly creates vicarious criminal liability, or the person committing the crime is acting in the
interest of the corporation and is a high managerial agent. (p. 130)
Assignments
1. Compare and contrast the Durham and substantial capacity insanity tests with the
M’Naghten test. Which test makes it more difficult for a defendant to prove in court?
2. Students should compare their state’s insanity laws with the M’Naghten test and
substantial capacity test found in the Model Penal Code. What is the burden of proof for
the defense and who carries the burden? Should decisions about whether a defendant is
not guilty by reason of insanity be made by a jury, a judge, or a panel of experts? [LO 3,