However, despite knowing little about potential partners’ intentions or probity, we may nevertheless choose to trust them to achieve greater gains for ourselves and to satisfy our own tastes for equity. Socio-economic interactions with strangers are inherently risky. We also found that inequality aversion was higher in females and, in a novel relation, that socio-economic deprivation was associated with more risk averse play. Males showed lower risk-aversion, associated with greater investments. Consistent with the literature, we showed an overall trend towards higher trust from adolescence to young adulthood but, in a novel finding, we characterized key cognitive mechanisms explaining this, especially regarding socio-economic risk aversion.
We found highly significant differences in investment behaviour according to age, sex, socio-economic status and IQ. We quantified social behaviour using a multi round investor-trustee task, phenotyping individuals using a validated model whose parameters characterise patterns of real exchange and constitute latent social characteristics.
Here, we used a cross sectional sample (n = 784) to study how the challenges of cooperation versus defection are negotiated across an important period of the lifespan: from adolescence to young adulthood (ages 14 to 25). Nevertheless, the potential rewards for cooperating can be great. Investing in strangers in a socio-economic exchange is risky, as we may be uncertain whether they will reciprocate.
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