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Derek Antony Parfit FBA (/ ˈ p ɑːr f ɪ t /; 11 December 1942 – 2 January 2017 [3] [4]) was a British philosopher who specialised in personal identity, rationality, and ethics. He is widely considered one of the most important and influential moral philosophers of the late 20th and early 21st centuries.
Reasons and Persons is a 1984 book by the philosopher Derek Parfit, in which the author discusses ethics, rationality and personal identity.. It is divided into four parts, dedicated to self-defeating theories, rationality and time, personal identity and responsibility toward future generations.
According to Parfit, it is rational for people who perceive very little connectedness with their future self to act in ways that neglect the future self (e.g., by smoking). The psychological work that followed did not similarly argue for Parfit's normative view but has instead attempted to test the descriptive validity of Parfit's theory. [6]
The mere addition paradox (also known as the repugnant conclusion) is a problem in ethics identified by Derek Parfit and discussed in his book Reasons and Persons (1984). The paradox identifies the mutual incompatibility of four intuitively compelling assertions about the relative value of populations.
The psychology of self and identity is a subfield of Psychology that moves psychological research “deeper inside the conscious mind of the person and further out into the person’s social world.” [1] The exploration of self and identity subsequently enables the influence of both inner phenomenal experiences and the outer world in relation to the individual to be further investigated.
The psychology of self is the study of either the cognitive, conative or affective representation of one's identity, or the subject of experience. The earliest form of the Self in modern psychology saw the emergence of two elements, I and me, with I referring to the Self as the subjective knower and me referring to the Self as a subject that is known.
Identity theory may refer to: Any of the theories of identity in philosophy; Cultural identity theory, in the social sciences; Identity Theory, a literary website;
The psychology of self is the study of either the cognitive and affective representation of one's identity or the subject of experience. The earliest formulation of the self in modern psychology forms the distinction between two elements I and me. The self as I, is the subjective knower.