How much information to sample before making a decision? It's a matter of psychological distance

How much information to sample before making a decision? It's a matter of psychological distance. By Vered Halamish & Nira Liberman
Journal of Experimental Social Psychology, July 2017, Pages 111–116
http://www.sciencedirect.com/science/article/pii/S0022103116307089

Abstract:: When facing a decision, people look for relevant information to guide their choice. But how much information do they seek to obtain? Based on Construal Level Theory, we predicted that psychological distance from a decision would make participants seek more information prior to making a decision. Five experiments supported this prediction. When facing a decision between two decks of cards or two urns with marbles, participants preferred to sample more units of information for the purpose of making this decision in the distant future or for a friend (vs. in the near future or for themselves). These results suggest that expanding the scope of sampled experience is yet another way by which psychological distance affects decision making.

The Benefits of Forced Experimentation: Striking Evidence from the London Underground Network

The Benefits of Forced Experimentation: Striking Evidence from the London Underground Network. By Ferdinand Rauch, Shaun Larcom, Tim Willems
https://www.economics.ox.ac.uk/Department-of-Economics-Discussion-Paper-Series/the-benefits-of-forced-experimentation-striking-evidence-from-the-london-underground-network

Abstract: We estimate that a significant fraction of commuters on the London underground do not travel their optimal route. Consequently, a tube strike (which forced many commuters to experiment with new routes) taught commuters about the existence of superior journeys -- bringing about lasting changes in behaviour. This effect is stronger for commuters who live in areas where the tube map is more distorted, thereby pointing towards the importance of informational imperfections. We argue that the information produced by the strike improved network-efficiency. Search costs are unlikely to explain the suboptimal behaviour. Instead, individuals seem to under-experiment in normal times, as a result of which constraints can be welfare-improving.

Part of the series Department of Economics Discussion Paper Series (Ref: 755 )

JEL Reference: D83,L91,R41

Keywords: Experimentation, Learning, Optimization, Rationality, Search

Need for uniqueness motivates conspiracy beliefs

Imhoff, R., and Lamberty, P. K. (2017) Too special to be duped: Need for uniqueness motivates conspiracy beliefs. Eur. J. Soc. Psychol., doi: 10.1002/ejsp.2265
http://onlinelibrary.wiley.com/doi/10.1002/ejsp.2265/full

Abstract: Adding to the growing literature on the antecedents of conspiracy beliefs, this paper argues that a small part in motivating the endorsement of such seemingly irrational beliefs is the desire to stick out from the crowd, the need for uniqueness. Across three studies, we establish a modest but robust association between the self-attributed need for uniqueness and a general conspirational mindset (conspiracy mentality) as well as the endorsement of specific conspiracy beliefs. Following up on previous findings that people high in need for uniqueness resist majority and yield to minority influence, Study 3 experimentally shows that a fictitious conspiracy theory received more support by people high in conspiracy mentality when this theory was said to be supported by only a minority (vs. majority) of survey respondents. Together, these findings support the notion that conspiracy beliefs can be adopted as a means to attain a sense of uniqueness.