article presents these waves and the consequences of its occurrence. They also deal with the absence of confidence that seems …

Sentiments are characteristics of players' beliefs. I propose two notions of sentiments, confidence and optimism, and I … complementarities. Confidence is related to a player's perceived precision of information; optimism is the sentiment that the outcome of … rationalizable strategy profiles, relating complementarities and confidence; the second gives an explicit lower bound on the change …