摘要: This paper presents results from an investigation of the effects manufacturing extension on productivity dynamics client plants. Previous econometric studies had very little time series information. limited what researchers could say about relative timing services and performance improvements. In turn, this makes it difficult to attribute improvements receipt services. paper, I use a panel nonclient plants more carefully analyze productivity. The suggest that observed at is consistent with positive impact extension. Estimated program impacts are within range those found in previous studies.