Browsing Decision Research Faculty Works by Author "Vastfjall, Daniel"

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  • Vastfjall, Daniel; Peters, Ellen; Slovic, Paul (Society for Judgment and Decision Making, 2008-01)
    Environmental events such as natural disasters may influence the public’s affective reactions and decisions. Shortly after the 2004 Tsunami disaster we assessed how affect elicited by thinking about this disaster influenced ...
  • Vastfjall, Daniel; Slovic, Paul; Burns, William J.; Erlandsson, Arvid; Koppel, Lina; Asutay, Erkin; Tinghog, Gustav (Frontiers Media, 2016-03-08)
    Research has demonstrated that two types of affect have an influence on judgment and decision making: incidental affect (affect unrelated to a judgment or decision such as a mood) and integral affect (affect that is part ...
  • Markowitz, Ezra; Slovic, Paul; Vastfjall, Daniel; Hodges, Sara (Society for Judgment and Decision Making, 2013-07)
    Compassion shown towards victims often decreases as the number of individuals in need of aid increases, identifiability of the victims decreases, and the proportion of victims helped shrinks. Such “compassion fade” may ...
  • Vastfjall, Daniel; Slovic, Paul; Mayorga, Marcus; Peters, Ellen (PLoS ONE, 2014)
    Charitable giving in 2013 exceeded $300 billion, but why do we respond to some life-saving causes while ignoring others? In our first two studies, we demonstrated that valuation of lives is associated with affective feelings ...
  • Bjalkebring, Par; Vastfjall, Daniel; Dickert, Stephan; Slovic, Paul (Frontiers Media, 2016-06-15)
    Older adults have been shown to avoid negative and prefer positive information to a higher extent than younger adults. This positivity bias influences their information processing as well as decision-making. We investigate ...
  • Slovic, Paul; Vastfjall, Daniel; Erlandsson, Arvid; Gregory, Robin (National Academy of Sciences, 2016-12-08)
    The power of visual imagery is well known, enshrined in such familiar sayings as “seeing is believing” and “a picture is worth a thousand words.” Iconic photos stir our emotions and transform our perspectives about life ...
  • Wiss, Johanna; Andersson, David; Slovic, Paul; Vastfjall, Daniel; Tinghog, Gustav (Decision Research, 2015-09)
    There is an increased willingness to help identified individuals rather than non-identified, and the effect of identifiability is mainly present when a single individual rather than a group is presented. However, identifiability ...
  • Vastfjall, Daniel; Slovic, Paul; Gergory, Robin (Johns Hopkins University Press, 2012)
    This paper describes a psychological phenomenon called psychic numbing that devalues lives when many are at stake and thus enables political leaders to neglect mass suffering, in violation of our professed humanitarian ...
  • Peters, Ellen; Slovic, Paul; Vastfjall, Daniel; Mertz, C. K. (Society for Judgment and Decision Making, 2008-12)
    Measuring reaction times to number comparisons is thought to reveal a processing stage in elementary numerical cognition linked to internal, imprecise representations of number magnitudes. These intuitive representations ...
  • Dickert, Stephan; Kleber, Janet; Vastfjall, Daniel; Slovic, Paul (PLoS ONE, 2016-02-09)
    One of the puzzling phenomena in philanthropy is that people can show strong compassion for identified individual victims but remain unmoved by catastrophes that affect large numbers of victims. Two prominent findings in ...
  • Vastfjall, Daniel; Slovic, Paul (De Gruyter, 2015-09)
    A defining element of catastrophes is the magnitude of their harmful consequences. To help society prevent or mitigate damage from catastrophes, immense effort and technological sophistication are often employed to assess ...
  • Genevsky, Alexander; Vastfjall, Daniel; Slovic, Paul; Knutson, Brian (Society for Neuroscience, 2013-10-23)
    The “identifiable victim effect” refers to peoples’ tendency to preferentially give to identified versus anonymous victims of misfortune, and has been proposed to partly depend on affect. By soliciting charitable donations ...
  • Vastfjall, Daniel; Slovic, Paul; Mayorga, Marcus (2015-11-04)
    In a great many situations where we are asked to aid persons whose lives are endangered, we are not able to help everyone. What are the emotional and motivational consequences of “not helping all”? In a series of experiments, ...
  • Vastfjall, Daniel; Slovic, Paul; Mayorga, Marcus (Frontiers Media, 2015-05-18)
    In a great many situations where we are asked to aid persons whose lives are endangered, we are not able to help everyone. What are the emotional and motivational consequences of “not helping all”? In a series of experiments, ...
  • Bjalkebring, Par; Vastfjall, Daniel; Dickert, Stephan; Slovic, Paul (Frontiers Media, 2016-11-30)
    We thank Hargis and Oppenheimer (2016) for their interesting commentary to our article (Bjälkebring et al., 2016). Age-related changes in decision making are indeed a relatively unexplored phenomenon especially when it ...
  • Kogut, Tehila; Slovic, Paul; Vastfjall, Daniel (Journal of Experimental Psychology: General., 2015-09-14)
    The singularity effect of identifiable victims refers to people’s greater willingness to help a single concrete victim, as compared with a group of victims experiencing the same need. We present three studies exploring ...
  • Dickert, Stephan; Vastfjall, Daniel; Kleber, Janet; Slovic, Paul (2015-11-04)
    A critical question for government officials, managers of NGOs, and politicians is how to respond to situations in which large numbers of lives are at risk. Theories in judgment and decision making as well as economics ...

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