Jury decision making Flashcards
Describe the jury system in England and Wales (6)
Juries comprise 12 people
Juries must try for at least 2 hours to reach a unanimous verdict
After 2 hours a 10-2 majority will be accepted
If a 10-2 majority is not reached it is a hung jury
Trial by jury is used in about 5% of criminal trials
The contempt of court act prohibits anyone from obtaining, disclosing or soliciting any of the particulars of the deliberations in the jury room
When are juries used? (1)
Used for cases where the accused pleads not guilty
Why can judges/jurors rule expert testimony as inadmissible? (3)
It tells us nothing new
It is based on laboratory studies
The eyewitness account is too compelling
What do jurors rely on? (2)
Jurors rely heavily on witnesses’ confidence to infer witness accuracy
What is the relationship between confidence and accuracy? (3)
The relationship between confidence and accuracy is complex, with many arguing that confidence is a very poor indicator of the accuracy of a witness’s memory
More recently this view has been challenged, but it requires near perfect conditions in terms of line-up and the measurement of confidence
What did Sauer et al. (2019) conclude about confidence and accuracy? (2)
Sauer et al. (2019) conclude that while there is increasing evidence to suggest that the confidence-accuracy relationship has some value, it is hard to use it to assess the validity of an individual identification
What did Penrod & Cutler (1995) report about eyewitness testimony and jurors? (5)
Jurors have a tendency to ‘over-believe’ EWT
They are not sensitive to the factors that influence accuracy
They rely heavily on witness confidence assessments
This can be influenced by post-identification information (and may not be an accurate reflection of accuracy)
However, expert testimony can reduce this reliance on confidence
What did Wright & Skagerberg, 2007 do? (4)
134 real eyewitnesses attending a UK police identification suite
Rate their confidence
The witness was then told the outcome of their identification decision
The witness again rated their confidence
What did Wright & Skagerberg, 2007 find about eyewitness confidence? (2)
Feedback about the identification decision affected witness confidence
Those told they had picked out the suspect became more confident following feedback
What did Smalarz & Wells, 2014 report about eyewitness confidence? (2)
Confirming information following a mistaken ID damages later identification of the actual culprit
Multiple forms of feedback following mistaken IDs had a cumulative effect on confidence
What factors can influence jury decision making? (1)
Attractiveness
How can attractiveness influence jury decision making? (4)
The halo effect (Thorndike, 1920)
Sigall & Ostrove (1975): Physically attractive defendants received lower sentences (mock cases using photographs) unless the crime was related to attractiveness and then there was an increase in punishment
Similar findings reported by Yang et al. (2019): attractive males awarded harsher sentences for a blind-date swindle, but only if they looked ‘untrustworthy’. For a ‘phone-based crime there was no ‘beauty penalty’ and untrustworthiness alone dictated penalties
What did Saladin et al. (1988) find about the role of attractiveness in jury decision making? (2)
Using 8 photographs, attractive males were considered less likely to commit a serious crime than unattractive males
What did Stewart (1980) find about the role of attractiveness in jury decision making? (2)
Attractive, clean, neat, well-dressed defendants had lower sentences, but no effect on verdict
What did Kerr (1978) find about the role of attractiveness in jury decision making? (1)
Attractive victims are more frequently supported by guilty verdicts
What did Swami, Arthey & Furnham (2017) find about the role of attractiveness in jury decision making? (2)
Attractive students were punished more severely for more serious offences, but no effect for less serious cases
What did Klein & Shtudiner (2020) find about the role of attractiveness in jury decision making? (2)
Klein & Shtudiner (2020): unethical workplace behaviour – ‘plain-looking employees’ judged more severely, but only for females, no attractiveness effect for males
How do jurors reach a verdict? (2)
Pennington & Hastie (1986, 1992) The story model
Dual-process theory (Eagly & Chaiken, 1993)
What is the story model? (4)
If this is done early in the trial, there will be a bias towards evaluating subsequent evidence in light of the story they have constructed (known as a confirmation bias)
What is dual process theory? (4)
Systematic processing:
Slower, more effortful thinking
the juror closely scrutinises and analyses the evidence
Heuristic processing:
Faster, more automatic thinking which involves less detailed scrutiny of the evidence
e.g. “There is no smoke without fire”
e.g. “Experts can be trusted”
What did Carlson & Russo (2001) suggest about how jurors reach verdict? (3)
The story model is the best account, but this means that all stories will be different (because of the influence of prior beliefs etc.) and this may impact on the outcomes made by juries
Heuristic processing (5)
Favoured when people are tired, pressured for time, the evidence is complex, or they lack knowledge about the topic
People may still rely upon heuristic short-cuts even when making highly consequential judgements
However, there is evidence of systematic processing taking place, with careful consideration of expert testimony as well as detailed deliberation in jury discussions
What are the factors of trial complexity? (9)
Evidence complexity
Number of witnesses
Length of trial
Number of charges
Legal complexity
Quantity of information
Number of documents
Number of items in evidence
Number of parties involved (e.g., complainants, accused)
What did Heuer and Penrod (1994) suggest about how complexity of trial affects jurors? (2)
The greater the information load, the less jurors felt they understood, and they expressed lower confidence in their verdicts