A field experiment is reported that examines the effects of trial complexity and trial procedures on jury performance. Juror question asking and notetaking were randomly assigned to 75 civil and 85 criminal trials. Principal components analyses of judges' responses revealed three components of trial complexity: evidence complexity, legal complexity, and quantity of information. None of these components was significantly related to judge-jury verdict agreement. Each component uniquely affected jurors' assessment of the trial, but none affected theirs or the judges' verdict satisfaction. Interactions reveal that juror questions were most beneficial for assisting the jurors with legal complexity and evidence complexity. Natural variation in judges' commenting on the weight and credibility of witnesses, or summarizing the evidence, use of special verdict forms, pattern instructions, and juror orientation was also measured. Of these, the use of special verdict forms appeared to provide the greatest benefits.
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Berk, R. A. (1983). An introduction to sample selection bias in sociological data.American Sociological Review, 4, 386–398.
Cecil, J., Hans, V. P., & Wiggins, E. C. (1991). Citizen comprehension of difficult issues: Lessons from civil jury trials.American University Law Review, 40, 727–774.
Charrow, R. P., & Charrow, V. (1978). Making legal language understandable: A psycholinguistic study of jury instructions.Columbia Law Review, 79, 1306.
Cohen, J., & Cohen, P. (1975).Applied multiple regression/correlation analysis for the behavioral sciences. Hillsdale, NJ: Wiley.
Elwork, A., Alfini, J. J., & Sales, B. D. (1982). Toward understandable jury instructions.Judicature, 432–443.
Elwork, A., Sales, B. D., & Alfini, J. J. (1977). Juridic decisions: In ignorance of the law or in light of it?Law and Human Behavior, 1, 163–189.
Elwork, A., Sales, B. D., & Alfini, J. J. (1982).Making jury instructions understandable. New York: Bobbs-Merrill.
Gant V. Union Bank, 446 U.S. 929 (1980).
Hans, V., & Vidmar, N. (1986).Judging the jury. New York: Plenum.
Heckman, J. J. (1979). Sample selection bias as a specification error.Econometrica, 45, 153–161.
Heuer, L., & Penrod, S. (1988). Increasing jurors' participation in trials: A field experiment with juror notetaking and question asking.Law and Human Behavior, 12, 231–261.
Heuer, L., & Penrod, S. (1991). Juror notetaking and question asking during trials: A national field study. Final report to the State Justice Institute, Washington, D.C.
Kalven, H., Jr., & Zeisel, H. (1966).The American jury. Chicago: The University of Chicago Press.
Krause v. State, 75 Okla Crim 381, 132 P2d 179 (1942).
In re Japanese Electronic Products Antitrust Litigation, 631 F2d 1069 (3rd Cir., 1980).
In re U.S. Financial Securities Litigation, 609 F.2d 411 (9th Cir., 1979).
Lempert, R. (1981). Civil juries and complex cases: Let's not rush to judgement,Michigan Law Review, 80, 68–132.
Louisville Bridge and Terminal Co. v. Brown, 211 Ky 176, 277 SW 320 (1925).
MacCoun, R. J. (1987).Getting inside the black box: Toward a better understanding of civil jury behavior. Santa Monica, CA: RAND.
McBride, R. (1969).The art of instructing the jury. Cincinnati, OH: W. H. Anderson.
Ratton v. Busby, 230 Ark 667, 326 SW2d 889, 76 ALR2d 751 (1959).
Schaefer v. St. Louis & Surburban R. Co., 128 Mo 64, 30 SW 331 (1895).
Schwarzer, W. W. (1991).Reforming jury trials. F. R. D., (132), 575.
Severance, L., & Loftus, E. F. (1982). Improving the ability of jurors to comprehend and apply criminal jury instructions.Law and Society Review, 17, 153–198.
Sipes, D. A. (1988).On trial: The length of civil and criminal trials. Williamsburg, VA: National Center for State Courts, Publication R-104.
Sperlich, P. W. (1980).... And then there were six: The decline of the American jury.Judicature 63, 262, 275–277.
Sperlich, P. W. (1982). The case for preserving trial by jury in complex civil litigation.Judicature, 65, 395–419.
Stamp v. Commonwealth, 200 Ky 133, 253 SW 242 (1923).
Strawn, D. U., & Munsterman, G. T. (1987). Helping juries handle complex cases. In L. S. Wrightsman, S. M. Kassin, & C. E. Willis (Eds.),In the jury box: Controversies in the courtroom (pp. 180–186). Newbury Park, CA: Sage.
This project was conducted under the auspices of the American Judicature Society, under a grant from the State Justice Institute (Project No. 88-06-F-C-018). The authors are thankful to the following students for their assistance throughout this project: Jason Eldridge, Sue Mailen, Tiffany Osterhaut, and Jim Petersen. We are especially grateful for the interest and efforts of 103 judges who participated in this study.