How Does Knowledge Coupling Affect Firm’s Incremental Innovation? The Moderating Effects of Government Support Policies

Table 3

Test of direct effect of knowledge coupling on firms’ incremental innovation.

Variables	Incremental innovation
	Model 1	Model 2	Model 3	Model 4	Model 5
Controls
Firm age	0.010	0.099	0.106	0.116	0.115
Firm size	−0.006	−0.008	−0.004	−0.022	−0.016
Technology turbulence	0.543	0.391	0.313	0.430	0.415
Predictors
Complementary knowledge coupling		0.318	0.82
Complementary knowledge coupling^2			−0.143
Substitutable knowledge coupling				0.287	0.273
Substitutable knowledge coupling^2					−0.101
F	40.125	42.432	35.616	40.836	34.417
R^2	0.304	0.383	0.395	0.373	0.387
Adjusted R^2	0.297	0.373	0.384	0.364	0.375

Note. ^∗∗∗P < 0.001; ^∗∗P < 0.01.