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		| Keiichi  Shima | 
	
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		| ''The link between R&D investment and market structure: evidence from Japan'' | 
	
		| ( 2011, Vol. 31 No.2 ) | 
	
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		| This paper examines how market structure affects R&D investment at the firm level. Using a sample of 1338 Japanese firms, a sample selection model is employed to estimate R&D investment. The pooled sample results suggest that the likelihood of conducting R&D is negatively associated with market concentration. However, the relationship becomes insignificant when the model is estimated by industry group. Large market sales have a positive effect on the likelihood of conducting R&D for both pooled and industry group samples. | 
	
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		| Keywords: | 
	
		| JEL: L1 - Market Structure, Firm Strategy, and Market Performance: General 
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		| | Manuscript Received : Mar 23 2011 |  | Manuscript Accepted : Jun 13 2011 | 
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