本研究目的乃在探討數學合作學習小組組內同儕目標互賴對對同儕精緻協助與求助行為的預測力，研究對象為具有數學合作學習經驗的六年級學生，施以小組學習精緻互助行為量表與目標互賴量表，收回有效問卷計832 份。潛在變項迴歸分析結果顯示：（1）正向與負向目標互賴對精緻協助行為有正向預測力，無目標互賴則有負向預測力；（2）正向與負向目標互賴對精緻求助行為有正向預測力，無目標互賴則有負向預測力；（3）正向目標互賴顯著高於負向目標互賴，二者具有正相關且均能正向預測同儕精緻互助行為，顯示組內同儕具有合作為主的競合關係。研究建議指出：（1）合作關係最能促進同儕互助，競合關係能添加互助動力；（2）更具有解釋力的精緻求助行為徑路模型值得未來研究進一步探討。

This study aimed to investigate the predictive power of the relationship between goal interdependence and elaborated mutual helping behavior within cooperative small groups in a math course. The study subjects were 832 sixth-grade students with experiences in math cooperative learning, and were administered the Mutual Helping Behaviors Questionnaire and Goal Interdependence Relationship Scale. The results of latent variable regression analysis showed that: (1) positive and negative goal interdependence had a positive predictive value for help-giving behavior of high-level elaboration, while no goal interdependence had a negative predictive value; (2) positive and negative goal interdependence had a positive predictive value for helpseeking behavior of high-level elaboration, while no goal interdependence had a negative predictive value; (3) Positive goal interdependence was significantly higher than negative goal interdependence, and both were positively correlated, and can positively predict mutual helping behavior, indicating that there is competition in a cooperative relationship among peers in the group. The study suggests that: (1) cooperative relationships can promote mutual help among peers, and competitive relationships can add motivation for mutual help; (2) the elaborated help -seeking behavior pathway model, which has more e xplanatory power, is worthy of further investigation in future research.