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Dynamic Games of R&D
Competition in a Differentiated Duopoly |
Changying Li Jianhu Zhang |
Working paper |
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(1) The stationary levels of
R&D and quality for the open-loop strategies are socially optimal. (2) The stationary feedback
levels of R&D, quality, consumer surplus and social welfare are always lower
than their open-loop counterparts; the opposite then is true with regard to
firms¡¦ prices and profits. (3) Product differentiation does not
impact the stationary levels of R&D and quality under the open-loop
model, but it negatively affects the stationary levels of R&D and quality
under the feedback model. (4) R&D investment remains
higher for a firm with an initial
quality advantage during the market evolution; however, the levels of
R&D and product qualities of the two firms will ultimately converge to
stationary points. |