Reaching A Verdict Flashcards
(46 cards)
What methodology did Pennington Nd Hastie use?
Lab experiment
What is the aim of Pennington and Hastie’s study?
To investigate whether or not story evidence summaries are true causes of the final verdict decisions and to what extent to which story order affects confidence in those decisions.
Who were the participants in Pennington and Hastie’s study?
130 students from Northwestern University and Chicago University. They were paid and allocated to one of 4 conditions.
What was the procedure of Pennington and Hastie’s study?
Participants were allocated to one of four conditions. They all listened to a tape recording of a fictional trial using actors. The participants were then asked to respond to written questions and asked to reach a verdict on a murder charge and asked to rate their confidence in their decision on a 5 point scale. Participants did not interact with each other. The defence items comprised of 39 not guilty pieces of evidence and the prosecution item comprised of 39 guilty pieces of evidence.
What were the results of Pennington and Hastie’s study?
Story order is the most effective way of presenting evidence as it is easier ti make sense of the story when it is presented in chronological order.
What is the aim of Loftus’ study?
To investigate the influence on jurors of expert testimony about eyewitness identification.
What methodology did Loftus use?
2 Lab experiments, independent measures.
Who were the participants in Loftus’ study?
1- 240 students from the University of Washington
2- 120 students from the university of Washington.
What is the procedure of experiment one in Loftus’ study?
Experiment 1- participants were randomly allocated to one of four conditions. Half read the expert psychological terminology introduced by the defence, half did not. Within each condition, half read the violent version of the crime. Expert testimony included information indicating that people are less good at recognising crime members of another race.
What were the results of experiment one in Loftus’ study?
Expert testimony reduced guilty verdicts by 19%
What was the procedure of experiment two in Loftus’ study?
all participants read the violent version of the crime. They were put into groups of 6 and asked to deliberate for 30 minutes and reach a group verdict. Half read the expert testimony, half did not. Researchers timed the amount of time participants spent discussing eyewitness testimony.
What were the results of experiment 2 in Loftus’ study?
The presence of an expert testimony caused juries to spend on average 3 minutes longer discussing eyewitness testimony than without expert testimony.
What was the conclusion of Loftus’ study?
The presence of an expert witness decreases the possibility of a guilty verdict because jurors have more knowledge and are able to make a more a informed decision, taking longer to discuss the verdict, taking more aspects into considerationz
What was the aim of Pickel’s study?
To investigate the influence on jurors of testimony ruled inadmissible by a judge.
What methodology did Pickel’s study use?
Lab experiment.
What was the procedure of Pickel’s study?
The participants listening to an audio recording of a fictional trial for theft. At one point in the trial, witness refers to defence having previous convictions which is objected as inadmissible evidence.
Explain the groups in Pickel’s study?
1- judge allows evidence
2- judge overrules evidence with legal explanation
3- judge overrules evidence with no legal explanation.
4- the control group heard no inadmissible evidence.
What were the results of Pickel’s study?
Mock jurors who heard the critical evidence ruled inadmissible with no legal explanation were able to ignore the evidence whereas where an explanation was given, the evidence seem to influence their decision. None of the participants believe that the evidence influence their decision.
What was the conclusion of Pickel’s study?
Reactance theory- the more attention is brought to the evidence, the less likely you are to be able to ignore it.
What is the aim of Castellow’s study?
To investigate using a mock trial simulation the effects of physical attractiveness of the defendant and plaintiff on jury decision making.
What was the methodology of Castellow’s study?
Lab experiment
Who were the participants in Castellow’s study?
Psychology undergraduates from
The University of East Carolina.
What is the procedure of Castellow’s study?
Participants read a summary of a mock trial in which a young secretary accused her boss of sexual harassment. They were shown previously rated pictures of the victim and defendant. The dependent variable was measured by the guilty verdict. Participants were asked to rate the defendant and victim on 11 bipolar scales such as dull-exciting then grouped into one of four conditions.
What were the results of Castellow’s study?
The unattractive defendant received more guilty verdicts that the attractive defendant.