FCRG member, Dr Georgina Gous, has recently lpublished a new paper entitled “The effects of witness mental illness and use of special measures in court on individual mock juror decision-making” in Psychology, Crime, and Law.
The paper reports a study using 204 members of the general public and student population who reported their attitudes towards mental illness before reading a mock trial vignette that differed in terms of witness mental illness (depression, schizophrenia, no mental illness) and the special measure used in court (screen, intermediary, no special measure). Following this, participants formulated judgments about the witness testimony provided (reliability, competency, credibility) and their likelihood of finding the defendant guilty. Results indicated that witnesses with depression were perceived as more competent than those with schizophrenia or no mental illness. Witnesses with depression were also perceived as being more competent than those with schizophrenia when a screen measure was used in court. The authors conclude that some awareness of these biases is needed in court, which may be aided by improving clarity about why special measures are used in court.