This study compared how the judge advisor system (JAS) and unstructured groups discuss common and unique information. Three differences between the two were measured for their effect on communication of information. These were responsibility for decision, consensus seeking, and equity of participation. Participants were given information about two drugs and had to decide which of the two to market. Half met in unstructured 3-person groups and made the decision as a group. The rest met in JASs whereby the judge discussed the information with each advisor separately and then made the decision individually. Advisors mentioned but did not repeat a higher proportion of unique information than group members. Judges felt more responsible for, reported putting more effort toward, and had higher confidence in the decision than did group members. There was more inequity of participation and consensus seeking in JASs compared to groups. Differences are discussed in light of results found on information exchange.
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References
1.
Abrams, D.
, & Hogg, M. A. (1999). Social identity and social cognition. Malden, MA: Blackwell.
2.
Alker, H. R.
(1965). Mathematics and politics. New York: Macmillan.
3.
Bouas-Henry, K.
, Arrow, H., & Carini, B. (1999). A tripartite model of group identification: Theory and measurement. Small Group Research, 30(5), 558-581.
4.
Chaiken, S.
(1980). Heuristic vs. systematic information processing and the use of source versus message cues in persuasion. Journal of Personality and Social Psychology, 39, 752-766.
5.
Chaiken, S.
, Liberman, A., & Eagly, A. H. (1989). Heuristic and systematic processing within and beyond the persuasion context. In J. S. Uleman & J. A. Bargh (Eds.), Unintended thought (pp. 212-252). New York: Guilford.
6.
Cooper, R. S., & Sniezek, J. A. (1998). A model of social information search in the judge-advisor-system of decision making. Unpublished manuscript, United States International University.
7.
Cruz, M. G.
, Boster, F. J., & Rodriguez, J. I. (1997). The impact of group size and proportion of shared information on the exchange and intergration of information in groups. Communication Research, 24, 291-313.
8.
Cruz, M. G.
, Henningsen, D. D., & Miller-Williams, M. L. (2000). The presence of norms in the absence of groups? The impact of normative influence under hidden-profile conditions. Human Communication Research, 26(1), 104-124.
9.
Dunning, D.
, Griffin, D. W., Milojkovic, J. D., & Ross, L. (1990). The overconfidence effect in social prediction. Journal of Personality and Social Psychology, 58, 568-581.
10.
Gigone, D.
, & Hastie, R. (1993) The common knowledge effect: Information sharing and group judgment. Journal of Personality and Social Psychology, 65, 959-974.
11.
Gigone, D.
, & Hastie, R. (1997). The impact of information on small group choice. Journal of Personality and Social Psychology, 72, 132-140.
12.
Gruenfeld, D. H.
, Mannix, E. A., Williams, K. Y., & Neale, M. A. (1996). Group composition and decision-making: How member familiarity and information distribution affect process and performance. Organizational Behavior and Human Decision Processes, 67, 1-15.
13.
Guetzkow, H.
(1950). Unitizing and categorizing problems in coding qualitative data. Journal of Clinical Psychology, 6, 47-58.
14.
Harvey, O. J.
, & Consalvi, C. (1960). Status and conformity to pressures in informal groups. Journal of Abnormal and Social Psychology, 60, 182-187.
15.
Heath, C.
, & Gonzalez, R. (1995). Interaction with others increases decision confidence but not decision quality: Evidence against information collection views of interactive decision making. Organizational Behavior and Human Decision Processes, 61, 305-326.
16.
Henningsen, D. D.
, & Miller, M. L. (1999, November). The effect of social loafing on communication in decision-making groups. Paper presented at the meeting of the National Communication Association, Chicago.
17.
Hinkle, S.
, Taylor, L. A., Fox-Cardamone, D. L., & Crook, K. F. (1989). Intragroup identification and intergroup differentiation: A multicomponent approach. British Journal of Social Psychology, 28, 305-317.
18.
Hogarth, R. M.
(1978). A note on aggregating opinions. Organizational Behavior and Performance, 21, 40-46.
19.
Hogg, M. A.
, & Abrams, D. (1993). Group motivation: Social psychological perspectives. London: Harvester Wheatsheaf.
20.
Hollingshead, A. B.
(1996a). Information suppression and status persistence in group decision making: The effects of communication media. Human Communications Research, 23, 193-219.
21.
Hollingshead, A. B.
(1996b). The rank-order effect in group decision making. Organizational Behavior and Human Decision Processes, 68, 181-193.
22.
Janis, I. L.
, & Mann, L. (1977). Decision making: A psychological analysis of conflict, choice and commitment. New York: Free Press.
23.
Karau, S. J. (1996). Group interaction and group decision making: The effects of time pressure, consensus, and awareness of common ground. Manuscript in preparation, Virginia Commonwealth University.
24.
Katz, D.
, & Kahn, R. L. (1966). The social psychology of organizations. New York: John Wiley.
25.
Keyton, J.
(1999). Group communication: Process and analysis. Mountain View, CA: Mayfield.
26.
Kim, P. H.
(1997). When what you know can hurt you: A study of experiential effects on group discussion and performance. Organizational Behavior and Human Decision Processes, 69, 165-177.
27.
Kirchler, E.
, & Davis, J. H. (1986). The influence of member status differences and task type on group consensus and member position change. Journal of Personality and Social Psychology, 51, 83-91.
28.
Larson, J. R., Jr.
, Christensen, C., Abbott, A. S., & Franz, T. M. (1996). Diagnosing groups: Charting the flow of information in medical decision-making teams. Journal of Personality and Social Psychology, 71, 315-330.
29.
Larson, J. R., Jr.
, Foster-Fishman, P. G., & Franz, T. M. (1998). Leadership style and the discussion of shared and unshared information in decision-making groups. Personality and Social Psychology Bulletin, 24, 482-495.
30.
Larson, J. R., Jr.
, Foster-Fishman, P. G., & Keys, C. B. (1994). The discussion of shared and unshared information in decision-making groups. Journal of Personality and Social Psychology, 67, 446-461.
31.
Maheswaran, D.
, & Chaiken, S. (1991). Promoting systematic processing in low motivation settings: Effects of incongruent information on processing and judgment. Journal of Personality and Social Psychology, 61, 13-25.
32.
Myers, J. L.
, DiCecco, J. V., & Lorch, R. F., Jr. (1981). Group dynamics and individual performances: Pseudogroup and quasi-F analyses. Journal of Personality and Social Psychology, 40, 86-98.
33.
Propp, K. M.
(1997). Information utilization in small group decision making: A study of the evaluative interaction model. Small Group Research, 28, 424-453.
34.
Schittekatte, M.
, & Van Hiel, A. (1996). Effects of partially shared information and awareness of unshared information on information sampling. Small Group Research, 27, 431-449.
35.
Seaver, D. A.
, von Winterfeldt, D., & Edwards, W. (1978). Eliciting subjective probability distributions on continuous variables. Organizational Behavior and Human Performance, 21, 379-391.
36.
Sniezek, J. A.
(1992). Groups under uncertainty: an examination of confidence in group decision making. Organizational Behavior and Human Decision Processes, 43, 1-28.
37.
Sniezek, J. A.
, & Buckley, B. (1995). Cueing and cognitive conflict in judge-advisor decision making. Organizational Behavior and Human Decision Processes, 62, 159-174.
38.
Sniezek, J. A., & Kolzow, K. (1994). From disagreement and uncertainty to consensus and confidence in group judgement. Unpublished manuscript, University of Illinois at Urbana-Champaign.
39.
Sniezek, J. A., & Spurlock, D. G. (1995). Uncertainty and social behavior. Unpublished manuscript, University of Illinois at Urbana-Champaign.
40.
Sniezek, J. A.
, & Van Swol, L. M. (1997, May). Trust in a face-to-face interaction in a Judge-Advisor system. Poster presented at the annual meeting of the Midwest Psychological Association, Chicago.
41.
Sniezek, J. A.
, & Van Swol, L. M. (2001). Trust and expertise in a Judge Advisor system. Organizational Behavior and Human Decision Processes, 84(2), 288-307.
42.
Stasser, G.
, & Stewart, D. (1992). Discovery of hidden profiles by decision-making groups: Solving a problem versus making a judgment. Journal of Personality and Social Psychology, 63, 426-434.
43.
Stasser, G.
, Stewart, D. D., & Wittenbaum, G. M. (1995). Expert roles and information exchange during discussion: The importance of knowing who knows what. Journal of Experimental Social Psychology, 31, 244-265.
44.
Stasser, G.
, Taylor, L. A., & Hanna, C. (1989). Information sampling in structured and unstructured discussions of three-and six- person groups. Journal of Personality and Social Psychology, 57, 67-78.
45.
Stasser, G.
, & Titus, W. (1985). Pooling of unshared information in group decision making: Biased information sampling during discussion. Journal of Personality and Social Psychology, 48, 1467-1478.
46.
Stasser, G.
, & Titus, W. (1987). Effects of information load and percentage of shared information on the dissemination of unshared information during group discussion. Journal of Personality and Social Psychology, 53, 81-93.
47.
Stewart, D. D.
(1998). Stereotypes, negativity bias, and the discussion of unshared information in decision-making groups. Small Group Research, 29, 643-668.
48.
Stewart, D. D.
, Billings, R. S., & Stasser, G. (1998). Accountability and the discussion of unshared, critical information in decision-making groups. Group Dynamics, 2, 18-23.
49.
Stewart, D. D.
, & Stasser, G. (1995). Expert role assignment and information sampling during collective recall and decision making. Journal of Personality and Social Psychology, 69, 619-628.
50.
Tindale, R. S.
, & Kameda, T. (2000). “Social sharedness” as a unifying theme for information processing in groups. Group Processes and Intergroup Relations, 3, 1-18.
51.
Van Hiel, A.
, & Schittekatte, M. (1998). Information exchange in context: Effects of gender composition of group, accountability, and intergroup perception on group decision making. Journal of Applied Social Psychology, 28, 2049-2067.
52.
Van Swol, L. M., Savadori, L., & Sniezek, J. A. (2000). Difficulty uncovering hidden profiles: resistance to opinion change or the reiteration effect? Manuscript in preparation, Northwestern University.
53.
Vroom, V. H.
, Jago, A. G., Eden, D., Yetton, P. W., & Craig, J. F. (1998). Participative leadership. In F. Dansereau, & F. J. Yammarino (Eds.), Leadership: The multiple-level approaches: Vol. 24. Classical and new wave (pp. 145-189). Stamford, CT: JAI.
54.
Vroom, V. H.
, & Yetton, P. W. (1976). Leadership and decision-making. Pittsburgh: University of Pittsburgh Press.
55.
Weisband, S. P.
, Schneider, S. K., & Connolly, T. (1995). Computer-mediated communication and social information: status salience and status differences. Academy of Management Journal, 38, 1124-115.
56.
Wheeler, D. D.
, & Janis, I. L. (1980). A practical guide for making decisions. New York: Free Press.
57.
Winquist, J. R.
, & Larson, J. R., Jr. (1998). Information pooling: When it impacts group decision-making. Journal of Personality and Social Psychology, 74(2), 371-377.
58.
Wittenbaum, G. M.
(1998). Information sampling in decision-making groups: The impact of members' task relevant status. Small Group Research, 29, 57-84.
59.
Wittenbaum, G. M.
, Hubbell, A. P., & Zuckerman, C. (1999). Mutual enhancement: Toward an understanding of the collective preference for shared information. Journal of Personality & Social Psychology, 77(5), 967-978.
60.
Wittenbaum, G. M.
, & Stasser, G. S. (1996). Management of information in small groups. In J. L. Nye & A. M. Brower (Eds.), What's social about social cognition? Research on socially shared cognition in small groups (pp. 3-28). Thousand Oaks, CA: Sage.
61.
Zarnoth, P.
, & Sniezek, J. A. (1997). The social influence of confidence in group decision making. Journal of Experimental Social Psychology, 33, 345-366.
