From the 1920s to the 1950s, behavioral psychology dominated much of psychological thought, but the cognitive revolution of the 1950s revealed cracks in the theories of the radical behaviorists, and cognitive psychology eventually managed to gain the upper hand.
Top 10 Heavyweight Contenders. 1  Deontay Wilder â Wilder jumped to the number 1 contender position following his step up win against Bermane Stiverne. 2  While it cost him his all-KO streak, proving he could win a fight over the 12-round distance after never going past 4 rounds was an even bigger statement.
A featherweight boxer weighs in at a limit of 126 pounds (57 kg). In the early days of the division, this limit fluctuated. The British have generally always recognized the limit at 126 pounds, but in America the weight limit was at first 114 pounds. An early champion, George Dixon, moved the limit to 120 and then 122 pounds.