Stories, Statistics, and Memory
CESifo, Munich, 2022
CESifo Working Paper No. 10107
![](https://cesifo.org/DocImg/cesifo1_wp10107.jpg?c=1689237139)
For most decisions, we rely on information encountered over the course of days, months or years. We consume this information in various forms, including abstract summaries of multiple data points – statistics – and contextualized anecdotes about individual instances – stories. This paper proposes that we do not always have access to the full wealth of our accumulated information, and that the information type – story versus statistic – is a central determinant of selective memory. In controlled experiments we show that the effect of information on beliefs decays rapidly and exhibits a pronounced story-statistic gap: the average impact of stories on beliefs fades by 33% over the course of a day, but by 73% for statistics. Consistent with a model of similarity and interference in memory, prompting contextual associations with statistics improves recall. A series of mechanism experiments highlights that the lower similarity of stories to interfering information is the key driving force behind the story-statistic gap.
Behavioural Economics