Jamming a rival′s learning

Can a firm (F) cause a rival (R) to learn less about R? Does F care? I explore F′s ability and incentive to affect, or “jam,” R′s private learning about R. The model developed does not have unobserved actions or ex ante asymmetric information which previous jamming models require. I find the F wants R not to learn and the more uncertain F believes R is, the more F wants to jam R′s learning. Entry deterrence increases with an entrant′s uncertainty, causing R to want F to believe that R is more certain about R′s beliefs than R really is. Journal of Economic Literature: D82, D83, L13.