After an analysis of the opinions of selected leading Progressive historians, Consensus historians, New-left historians and contemporary historians, the author comes to the conclusion that ever since the Progressive historians began to write about the movement in which they had played an important role, the interpretation of the Progressive Movement has undergone at least four changes: from the Progressive historian's stress on conflict, through the Consensus historian's emphasis on adjustment and New-left historian's anti-establishment sentiment to present day historian's view of multiplicity. He also believes that each of these interpretations reflects the prevailing climate of opinion of the age in which it was produced.
