“Decisions from experience” (DFE) refers to a body of work that emerged in research on behavioral decision making over the last decade. One of the major experimental paradigms employed to study experienced-based choice is the “sampling paradigm”, which serves as a model of decision making under limited knowledge about the statistical structure of the world. In this paradigm respondents are presented with two payoff distributions, which, in contrast to standard approaches in behavioral economics, are specified not in terms of explicit (...) outcome-probability information, but by the opportunity to sample outcomes from each distribution without economic consequences. Participants are encouraged to explore the distributions until they feel confident enough to decide from which they would prefer to draw from in a final trial involving real monetary payoffs. One commonly employed measure to characterize the behavior of participants in the sampling paradigm is the sample size, that is, the number of outcome draws which participants choose to obtain from each distribution prior to terminating sampling. A natural question that arises in this context concerns the “optimal” sample size, which could be used as a normative benchmark to evaluate human sampling behavior in DFE. In this theoretical manuscript, we relate the DFE sampling paradigm to the classical statistical decision theoretic literature and, under a probabilistic inference assumption, evaluate optimal sample sizes for decisions from experience. In our treatment we go beyond analytically established results by showing how the classical statistical decision theoretic framework can be used to derive optimal sample sizes under arbitrary, but numerically evaluable, constraints. Finally, we critically evaluate the value of deriving optimal sample sizes under this framework as testable predictions for the experimental study of sampling behavior in DFE. (shrink)

The article addresses the problem of making life decisions by people during the period of late adolescence; describes the specifics of the influence of various factors, in particular, the sense of life orientations, life position, impulsivity; the questions of the influence of fear on the process of making life decisions by young people; and the influence of various types of fears on this process. -/- The results of the research show that the influence of fears on the process of making (...) life decisions during the late adolescence is largely determined by characteristics of this age period, such as the formation of identity and the affirmation of one’s own self in the society. Thus, the most influential types of fears during this period are sociophobia, which consists of fear of social opinions and fear of social interactions; and fortunophobia (fear of fate). Sociophobia has such a powerful influence because young people go through the process of separation from their parents and joining society as separate individuals, and therefore the society’s opinion about them as an identity becomes very important to them. Fortunophobia is essentially the fear of the unknown and unavoidable fate, which is an inseparable part of making any life decision, especially in such a young age when people are only making their first crucial life decisions. According to the conducted research, meaningfulness of life has a reverse effect on the impact of fears on making life decisions, which means that with a greater meaningfulness of the individual’s life, the impact of fears is reduced. At the same time, impulsiveness has a direct effect, i.e. the more impulsive an individual is, the more influence fear has on their making life decisions. Life position of “Me + World –” is the least influenced by fears during the process of making life decisions. Also, the influence of fears appears to be more of a motivating factor rather than constraining, which forces young people to act and change their lives. (shrink)