Hernan Anlló

Dec 19, 2024 | nature.com | Hernan Anlló |Nichola Raihani |Stefano Palminteri |Uri Hertz |Gil Salamander

Individuals often rely on the advice of more experienced peers to minimise uncertainty and increase success likelihood. In most domains where knowledge is acquired through experience, advisers are themselves continuously learning. Here we examine the way advising behaviour changes throughout the learning process, and the way individual traits and costs and benefits of giving advice shape this behaviour. We ran a series of experiments implementing a decision task within a reinforcement learning framework, where participants could decide to share their choices as advice to others. Participants were overall likely to share their choices as advice, even on the first trial before learning. Tendency to share advice and advice quality increased as advisers learned about the value of choices, and moved from exploratory to exploitative behaviour. The introduction of consequences to advising resulted in a shift of the overall tendency to give advice, lowering it when advising implicated monetary loss, and increasing it when advising held reputational value. Individual differences in social anxiety levels were associated with lower tendency to share exploratory decisions. Our results show that advisers tend to share choices that are backed by their own experience, but that this relationship can be altered by advice-consequences and individual traits. In non-competitive settings, learners manifest a preference for broadcasting useful experience-based information to other learners, even when it comes at a social or economic cost.

Jul 8, 2024 | nature.com | Hernan Anlló |Sophie Bavard |Fatima Ezzahra Benmarrakchi |Maelle Gueguen |Eugenio Guzmán |Dzerassa Kadieva | +11 more

Correction to: Nature Human Behaviour https://doi.org/10.1038/s41562-024-01894-9, published online 14 June 2024. In the version of the article initially published, the order of the x-axis labels in Fig. 2e was reversed (originally reading “India–United States” left-to-right) and has now been amended in the HTML and PDF versions of the article. About this articleAnlló, H., Bavard, S., Benmarrakchi, F. et al.

Jun 13, 2024 | nature.com | Hernan Anlló |Sophie Bavard |Maelle Gueguen |Eugenio Guzmán |Dzerassa Kadieva |Jiong Yang | +11 more

AbstractRecent evidence indicates that reward value encoding in humans is highly context dependent, leading to suboptimal decisions in some cases, but whether this computational constraint on valuation is a shared feature of human cognition remains unknown. Here we studied the behaviour of n = 561 individuals from 11 countries of markedly different socioeconomic and cultural makeup. Our findings show that context sensitivity was present in all 11 countries.