Juror experience and decision making.

Kassin, S. M., & Juhnke, R. (1983). Juror experience and decision making. Journal of Personality and Social Psychology, 44, 1182-1191.

Undergraduates who were inexperienced as mock jurors read 1 of 2 trial transcripts and participated in 9 6-person juries. Several days later, they read a 2nd trial and participated in 18 juries that included new, inexperienced Ss. This procedure yielded 3 groups: inexperienced Ss in homogeneous (i.e., fully inexperienced) juries, inexperienced Ss in heterogeneous juries, and experienced Ss in heterogeneous juries. Results do not support the hypothesis that prior service produces an individual judgmental bias toward guilt or innocence. However, Ss’ experience relative to that of their fellow jurors influenced their impact within the group as well as their satisfaction with the trial process. Implications for juror selection and usage procedures are discussed. Prior jury experience not related to verdict preference differences before or after deliberation, but novice jurors changed verdict preferences more often in juries dominated by experienced as opposed to inexperienced jurors.

http://psycnet.apa.org/psycinfo/1984-01346-001