The philosophy of probability pioneered by Ramsey and de Finetti, and furthered by the American statistician L. J. Savage in his Foundations of Statistics (1954). Personalism rejects the view that probabilities are ‘out there’ waiting to be discovered. It views assignments of probability to events as purely personal expressions of the degree of confidence to be had in the occurrence of an event. Saying that an event is 50% probable is simply an expression or endorsement of a strategy of betting on the event at evens. Betting rates must, however, be coherent in the sense of conforming to the mathematics of probability, since if an agent buys and sells bets without obeying its laws (for example, assigning a high probability both to an event e, and to its complement, not-e) he can be put in the position of losing whatever the outcome. This constraint is known as that of avoiding a Dutch book . The convergence of arbitrarily different initial betting rates upon a stable (‘objective’) probability is due to the pressure of evidence, which forces an agent who seeks coherence through time to conditionalize (see conditional probability ), or modify his probability assignments in accordance with some version of Bayes's theorem . See also representation theorem, exchangeability.
In an older usage, personalism is the theistic stress on the existence of divine personality, or any philosophy according to which the individual person or thinker is the starting-point of theory.

Philosophy dictionary. . 2011.

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  • Personalism — Per son*al*ism, n. The quality or state of being personal; personality. [R.] [1913 Webster] …   The Collaborative International Dictionary of English

  • personalism — [pʉr′sə nə liz΄əm] n. any doctrine or movement which emphasizes the rights and centrality of the individual human being in his or her social, political, intellectual, etc. milieu personalist n., adj. personalistic adj …   English World dictionary

  • personalism — personalist, n. personalistic, adj. /perr seuh nl iz euhm/, n. 1. Also called personal idealism. a modern philosophical movement locating ultimate value and reality in persons, human or divine. 2. Psychol. an approach stressing individual… …   Universalium

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  • PERSONALISM —    the PHILOSOPHY which regards the individual PERSON as the highest form of REALITY. American PROTESTANT LIBERALISM was deeply influenced by a personalism which saw HISTORY as the unfolding of the MORAL aspect of GOD S will …   Concise dictionary of Religion

  • personalism — ˈpərs(ə)nəˌlizəm noun ( s) 1. : personal quality or state : individuality of character or influence : individualism 2. : a doctrine, theory, or school of thought emphasizing the significance, uniqueness, and inviolability of personality …   Useful english dictionary

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  • personalism — noun A doctrine of subjective idealism that regards personality as the means of interpreting reality …   Wiktionary

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