What is Sidgwick’s Dualism of Practical Reason?

Sidgwick's 'Dualism of Practical Reason' has attracted the attention of many interpreters, and the Dualism itself seems to be an historically important version of the view, recently defended by Thomas Nagel, Susan Wolf, and others, that there exists a fundamental fragmentation of value – that the 'cosmos of duty is reduced to chaos,' in Sidgwick's words. In this paper, I consider and reject the leading interpretations of Sidgwick's Dualism, and propose an alternative reading. I conclude by offering what I hope is a plausible but Sidgwickian way out of the Dualism.     

Women's body satisfaction at midlife and lifetime body size: a prospective study.

The relationship between past body size and current body dissatisfaction among 933 middle-aged women from a prospective birth cohort study was examined. Women provided self-report data on weight esteem at age 54. Height and weight data were collected at ages 7, 11, 15, 20, 26, 36, 43, and 54. Data on reproductive variables were also collected prospectively. Hierarchical linear modeling and multiple regression analyses were used. Women who were dissatisfied at midlife were heavier at age 7 and showed a more rapid increase in body mass index with age. A late menarche, being postmenopausal, and having started hormone replacement therapy before menopause were associated with less dissatisfaction. Attention to these factors across the life span is necessary to understand body dissatisfaction in women at midlife.