The results of the tests of the hypotheses are presented in Tables 24. In each table, control variables are included in the first model, and independent variables for testing each hypothesis are added one at a time in subsequent models.
Results Of Regression Analysis. Number Of Patents As The Dependent
Variable. Unstandardized Regression Coefficients Reported; Standard Errors Shown In Parentheses. MODEL
# p<0.1, * p<0.05, ** p<0.01 (twotailed tests)
In Table 2, the control variable, R&D expenditure of the company is included in Model 1. Models 2 and 3 test for the effects of the number of R&D collaborative partners, and the partner age, respectively. As shown in Table 2, the number of technological collaborative partners (N R&D) is positively related to innovation, giving support for Hypothesis 2a. Also the increase in overall R2 is significant. New biotechnology firms with more collaborative partners are likely to produce more patents. However, we fail to find a significant relationship between partner age (R&D age) and innovative output in this sample, although the coefficient is in the right direction.
Table 3 looks at the effects on radical innovation. In contrast with the previous hypotheses, we proposed a negative relationship between collaborative characteristics and radical innovation, and this prediction is actually born out. As shown in Table 3, the number of R&D collaborative partners (N R&D) and the citations the patents of the startup receive are negatively related (models 2 and 3). Hypothesis 2b is thus strongly supported.
There is also some support for hypothesis
1b, which proposed a negative relationship between partner age
and radical innovation. Although the coefficient is in the right
direction, and it increases the overall explanatory power, this
relationship fails to reach significance when we control for the
age of the firm (Founding) and R&D expenditures (Ln rd; see
model 3). A possible explanation of this result is the missing
values that limited the sample size of the R&D age variable.
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Last Updated 03/15/98