資訊管理學報

黃興進;邱建中;
頁: 11-32
日期: 1999/01
摘要: 以往的研究指出,溝通媒介與群體大小對群體活動的績效有很大的影響。本論文主要目的為探討在群體支援系統環境下,大群體在制定偏好型決策時,使用電子交談是否比使用口頭交談有較佳的效率與效能,及在採用電子交談方式的群體支援系統環境下,對於偏好型決策大群體是否比小群體有較佳的效率與效能。本研究採用二因子完全隨機設計,自變數為溝通媒介(電子交談與口頭交談)及群體大小(三人為小群體和九人為大群體)。而群體效率與效能的評估,包含彙總時間、認知決策品質、彙總過程滿意度、決策滿意度、平等參與度與共識改變度。採用偏好型任務(個人信託基金分配)及使用自行開發的群體支援系統進行三十二組實驗。研究結果顯示,大群體在群體支援系統環境下,電子交談比口頭交談耗費更長的彙總時間,但有較高的彙總過程滿意度、平等參與度、及共識改變度。使用電子交談的群體支援系統,「群體大小」的影響並不顯著,但大群體比小群體 使用更長的電子交談彙總時間。
關鍵字: 電子交談;偏好型決策;群體支援系統;群體大小;群體決策支援 ;
Abstract: This experimental study investigates the effects of communication medium and group size on GSS. A two-by-two completely randomized factorial design was employed, and a total of 216 subjects participated in this study. Four pilot experiment,!l sessions and thirty-two sessions were conducted. The independent variables manipulated were communication medium (verbal exchange versus electronic message) and group size (three and nine persons) . The dependent variables were compact time, perceived decision quality, compact scheme satisfaction, decision satisfaction, equality of participation and change of consensus. The main findings of this study were twofold. First, compact scheme satisfaction, equality of participation and change of consensus can be improved in large GSS electronic medium groups, and large electronic medium groups take compact time longer than large verbal exchange groups. Second, the effects of group size is not significant on GSS groups with electronic medium, however, large GSS groups with electronic medium use compact time longer than small GSS groups with electronic medium.
Keywords: Communication medium;Electronic messaging;Group support systems;GSS;Group size;Preference task ;

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