中文摘要：

家族控制不仅包括控制的能力,也包括控制的意愿,只有两者同时具备才是产生家族企业独特行为的充分条件.以往研究往往忽视控制意愿的影响,或是默认意愿等价于能力,这是造成家族企业行为研究分歧的一个重要原因.本文以企业研发投资为考察对象,探索家族控制的意愿和能力对企业研发投入的影响.研究发现：家族的控制意愿和对关键决策的控制能力对企业的研发投入都具有抑制作用,对关键决策的控制在控制意愿与研发投入之间的关系中发挥完全中介作用.

英文摘要：

Family controls include not only the ability to control,but also the willingness to control. Family control makes particular behavior happen if and when both the ability and willingness of family control are presented. But the willingness is often ignored or implicitly assumed it connects closely with the ability in previous family researches,leading to many inconsistent results. It explored the effect of willingness and ability of family control on RD investment. The findings indicate that both the willingness and the ability negatively connect with the RD investment,and the control of important decisions completely mediates the relationship between the willingness of family control and RD investment.