農會推廣部門相關研究議題過去在國內外學界並未獲得應有的重 視，本研究選定農事指導員為研究母體，嘗試由產業組織領域近年有關 工作場所同儕互動的研究方向切入，檢視農事指導員個人之工作表現及 其主要的影響因素。過去國內外文獻在研究同儕間的互動關係時，僅考 慮單向的互動關係。不同於過往文獻以單一變項代表同儕間的互動，本 研究同時考慮主動與被動的雙向互動關係以建構同儕互動行為與績效表 現的三維計量模型，並利用臺灣農會推廣部門人員問卷調查的初級資 料，檢視同儕互動如何影響指導員指導之產銷班獲得優良產銷班獎項的 機率。本研究之實證結果顯示，同儕提供協助之互動行為是顯著影響農 事指導員工作表現的因素，而其影響方向則取決於工作團隊內有無從事 相同業務性質之同儕。團隊內存在專業同儕將能提升指導員個人之績效 表現；反之，則同儕間之互動可能產生工作時間的排擠效果，因而對其 個人績效產生負向的影響。

Topics on the extension department of the farmers’ association did not receive much attention in the literature. Taking the farming extension personnel as the research population, this study attempts to examine the extension personnel’s work performance and its major determinants, with a special focus on peer interaction at the workplace. Depart from past literature associating one-way interaction with work performance; this study considers a two-way interaction involving both active and passive peer interaction in the workplace. To this end, a trivariate probit model is specified and applied to the survey data of farming extension personnel in Taiwan’s farmers’ association. The empirical results suggest that although peer helping is a key factor in influencing agricultural extension personnel’s work performance, its impact depends on whether there are peers with similar expertise. It is found that the presence of professional peers does improve individual’s performance; however, due to possible crowding-out effect of peer interaction, peer interaction might lower the extension personnel’s award winning probability in the absence of professional peers.