Table 1.

Included fixed effects and AIC values for all models. Improvement of model fit was tested using a log likelihood ratio test. Models were regarded statistically better if they exceeded the threshold of p < .05. Preferred models are depicted in bold. A full description of the statistical parameters for each of these models is available on the Open Science Framework: https://osf.io/8frsj/.

Fixed effects	Social risky vs solo		Social safe vs solo
	Risk tolerance (rho)	Ambiguity aversion (beta)	Risk tolerance (rho)	Ambiguity aversion (beta)
None (null model)	-70	383	-170	234
Condition	-75	383	-180	236
Condition * linear age	-72	387	-176	238
Condition * linear age & Condition * quadratic age	-71	388	-176	240