heel7

In addition we find that the results differ for our size classes, suggesting that firm size affects the abilities of a firm to benefit from external knowledge.. Smaller firms benefit from knowledge about customers, while large firms with increased knowledge about competitors and new developments experience greater research productivity.

Analysis of Model II for the Different Size Classes Dependent Variable: Percent Sales Growth (1993–1995)

	Size Class I	Size Class II	Size Class III
Intercept	0.2381 (0.1038)	0.3604 (0.0796)	0.1318 (0.02559)
Percent research expenditure growth (1993–1995) (1)	0.6516*** (0.2348)	0.0097 (0.2300)	0.0829* (0.0519)
Knowledge acquisition about competitors (2)	0.0240 (0.0882)	0.0655 (0.0849)	0.0016 (0.0284)
Knowledge acquisition about customers (3)	0.0929 (0.0838)	-0.0861 (0.0816)	0.0360 (0.0280)
Knowledge acquisition about new developments (4)	-0.03091 (0.0784)	0.0688 (0.0841)	0.0348 (0.0275)
Intra–firm knowledge dissemination (5)	-0.0759 (0.0671)	-0.0349 (0.0783)	-0.0655** (0.0297)
(1*2)	0.0164 (0.3776)	0.0660 (0.1760)	0.0904* (0.0495)
(1*3)	0.6623** (0.3121)	0.0737 (0.1452)	-0.1605* (0.0496)
(1*4)	-0.3391 (0.2078)	0.1416 (0.2468)	0.1405*** (0.0522)
(1*5)	-0.0970 (0.2174)	0.0157 (0.2429)	0.3855*** (0.0968)
Multiple R–Squared	0.4477	0.0763	0.5321
F statistics	3.062	0.0763	12.63
p value	< 0.01	< 0.8	< 0.0001
N	231	231	231
Significant at the 0.1 level, Significant at the 0.05 level, **Significant at the 0.01 level