School of Psychology, Southwest University, Chongqing, China.
PLoS One. 2012;7(4):e33950. doi: 10.1371/journal.pone.0033950. Epub 2012 Apr 18.
Why do some people live for the present, whereas others save for the future? The evolutionary framework of life history theory predicts that preference for delay of gratification should be influenced by social economic status (SES). However, here we propose that the decision to choose alternatives in immediate and delayed gratification in poverty environments may have a psychological dimension. Specifically, the perception of environmental poverty cues may induce people alike to favor choices with short-term, likely smaller benefit than choices with long-term, greater benefit.
METHODOLOGY/PRINCIPAL FINDINGS: The present study was conducted to explore how poverty and affluence cues affected individuals' intertemporal choices. In our first two experiments, individuals exposed explicitly (Experiment 1) and implicitly (Experiment 2) to poverty pictures (the poverty cue) were induced to prefer immediate gratification compared with those exposed to affluence pictures (the affluence cue). Furthermore, by the manipulation of temporary perceptions of poverty and affluence status using a lucky draw game; individuals in the poverty state were more impulsive in a manner, which made them pursue immediate gratification in intertemporal choices (Experiment 3). Thus, poverty cues can lead to short-term choices.
CONCLUSIONS/SIGNIFICANCE: Decision makers chose more frequently the sooner-smaller reward over the later-larger reward as they were exposed to the poverty cue. This indicates that it is that just the feeling of poverty influences intertemporal choice - the actual reality of poverty (restricted resources, etc.) is not necessary to get the effect. Furthermore, our findings emphasize that it is a change of the poverty-affluence status, not a trait change, can influence individual preference in intertemporal choice.
为什么有些人活在当下,而有些人则为未来存钱?生命史理论的进化框架预测,延迟满足的偏好应该受到社会经济地位(SES)的影响。然而,我们在这里提出,在贫困环境中选择即时和延迟满足的选择可能具有心理维度。具体来说,对环境贫困线索的感知可能会诱导人们倾向于选择短期、可能较小的收益,而不是长期、更大的收益。
方法/主要发现:本研究旨在探讨贫困和富裕线索如何影响个体的跨期选择。在我们的前两个实验中,个体明确(实验 1)和隐含(实验 2)暴露于贫困图片(贫困线索)时,与暴露于富裕图片(富裕线索)时相比,更倾向于即时满足。此外,通过使用抽奖游戏来临时改变贫困和富裕状态的感知;处于贫困状态的个体会更冲动,从而在跨期选择中追求即时满足(实验 3)。因此,贫困线索会导致短期选择。
结论/意义:决策者在接触贫困线索时,更频繁地选择即时较小的奖励,而不是以后较大的奖励。这表明,仅仅是贫困的感觉会影响跨期选择——贫困的实际现实(资源有限等)并不需要产生这种影响。此外,我们的研究结果强调,是贫困-富裕状态的变化,而不是特质的变化,可以影响个体在跨期选择中的偏好。