Supplementary Appendix for Contests for Experimentation

This section provides details for Section 4.4 of the paper. We consider the class of contests with intermittently-public information disclosure: the principal specifies a set of times at which the entire history of successes to date is publicly disclosed; at other times, there is no information disclosed. Formally, an intermittently-public disclosure policy is a sequence (Mt, μt)t∈[0,T ] where, for an arbitrary set T ⊆ [0, T ], Mt = O and μt(o) = o if t ∈ T , and |Mt| = 1 if t 6∈ T .1 Define a mixture contest (with switching time t) as one that implements public winner-takes-all (WTA) from time 0 to some time t ∈ [0, T ] and then hidden equal-sharing (ES) from time t to T .