Insanity Defense
Goal: Determine what the patient’s mental status was at the time they committed the crime
The evaluation assists the court in determining whether the individual should be held accountable for their actions
8 Myths about the insanity defense
Difficulty in determining insanity
Insanity is a legal concept that may vary from one jurisdiction to another
Requires a retrospective assessment of the person’s mental state at the time of the offense
2 components in every crime
2. mens rea
3 criminal defenses
NGRI defense
Involves denial of mens rea
If successful, results in commitment to a psychiatric hospital
What are the 4 rules for defining insanity?
M’Naghten Rule
Used by 27 US States
Considered a cognitive test of insanity
Elements:
1. Defect of reason, from a disease of the mind
2. Did not know the “nature and quality of the act he was doing”
2. Did not know that “what he was doing was wrong”
Irresistible Impulse Test
Standard added to account for individuals who knew the act was wrong but lacked the capacity to control their behavior
Volitional aspect of insanity
Problem: it is difficult to distinguish b/w an irresistible impulse and one that is simply not resisted
Added to M’Naghten Rule in 5 states (CO,GA,NM,TX,VA)
Durham Test
Standard: the def is not criminally responsible if his or her unlawful act was a product of mental disease or defect
Problem: application of any familiar clinical- diagnostic label?
Currently used in only New Hampshire
ALI Standard/Brawner Rule
Elements:
1. As a result of mental disease or defect
2. Lacks substantial capacity to a) appreciate wrongfullness b) Conform conduct to the law excludes abnormalities comprised of antisocial conduct
Includes a cognitive and volitional prong
Currently 18 states use the ALI Standard
How many states do not provide a legal basis for an insanity defense?
4
“Guilty but mentally ill” verdict (GBMI)
recognizes that the def has a mental illness but they are still held responsible for their actions
Def is provided treatment at a state mental hospital until he/she is declared to be sane, then is sent to prison
Recognized in 13 states
Criticisms of GBMI
Insanity Defense Reform Act of 1984
Congress radically overhauled the federal laws regarding insanity after the Hinkley verdict
Removed volitional prong of ALI rule
Focus on cognitive “appreciation”
Burden of proof- shifted to def to prove insanity by clear and convincing evid.; most states concur but typically with the preponderance of the evid. standard
Psychologists Role in Assessment of Mental Status for Insanity Cases
Interviews
-Often unstandardized and unstructured, but used in almost every case
Psychological Assessment
-Mental Screening Evaluation (MSE)- clinician-completed questionnaire; to “screen out” those defs whose lawbreaking actions clearly were not caused by a mental abnormality
-Rogers Criminal Responsibility Assessment Scales (R-CRAS)- structured interview; measures the ALI definition of insanity via 25 quantifiable variables
Psychologists role in testifying as an expert witness for insanity cases
Prosecution and defense may both have experts with conflicting testimony
The court may also appoint an expert
Sometimes difficult cross-examinations
Ultimate-Issue Testing
Psychologists are divided on whether it is proper for an expert to express an opinion about whether the def was sane or insane at the time of the offense
Federal Rules of Evid. 704 (b)
Basically, no expert witness can state their opinion as to the mental state of the def- that is a matter for the trier to decide
Constitutional basis for trial competence
Constitutional DP (fundamental fairness) requires that the def have opportunity for meaningful participation in the case If the def is mentally incapable of meaningful participation, the right to trial is an empty right Thus, trial of a def who is incompetent to stand trial violates the constitution
What is trial competence
Ability to rationally and effectively consult with one’s attorney
Ability to understand the nature of the charges against them
Ability to understand legal proceedings and participate in them in a meaningful manner
Dusky and Drope Standard
Legal Competence standard
“Def must have “sufficient present ability to consult w/ his attorney w/ a reasonable degree of rational understanding and rationale as well as factual understanding of the proceedings against him” -Dusky
Def must also have the capacity “to assist in preparing his defense” -Drope
In about what percent of cases do def attorneys have concerns about their client’s competency to stand trial?
10-15%
About how many defs are referred for eval of their competency per year?
25,000