Willpower is a cognitive skill that can be taught, not a fixed trait you either have or do not have.

Walter Mischel

Psychologists

Walter Mischel

Austrian-born American psychologist (1930-2018) whose 1968 book Personality and Assessment triggered a paradigm crisis in personality theory by attacking the cross-situational consistency assumption. From the late 1960s his Stanford marshmallow studies turned the question of delayed gratification into one of the most cited research programs in psychology. With Yuichi Shoda he later built the cognitive-affective personality system (CAPS) and with Janet Metcalfe the hot/cool framework of self-regulation. He was ranked 25th most cited psychologist of the 20th century in a 2002 survey and won the Grawemeyer Award in 2011. The 2018 Watts et al. replication, however, showed that family background largely explains the long-term effects originally attributed to delay ability, prompting a major reinterpretation of his legacy.

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