Appendix 1—table 6. Influences on exploratory choice including quadratic age and WASI scores.

	Odds ratio	95% confidence interval	Χ 2	p
Intercept	1.00	[0.95, 1.05]
Expected Value	3.30	[2.92, 3.74]	168.0	<0.001
Uncertainty	0.87	[0.82, 0.93]	16.3	<0.001
Novelty	1.36	[1.30, 1.42]	111.1	<0.001
Expected Value × Age	1.82	[0.76, 4.33]	1.8	0.183
Uncertainty × Age	0.60	[0.38, 0.94]	4.9	0.027
Novelty × Age	0.71	[0.51, 0.98]	4.2	0.040
Expected Value × Age2	0.70	[0.29, 1.68]	0.6	0.429
Uncertainty × Age2	1.51	[0.96, 2.37]	3.2	0.076
Novelty × Age2	1.45	[1.05, 2.01]	4.9	0.026
Expected Value × WASI	1.33	[1.18, 1.50]	19.2	<0.001
Uncertainty × WASI	0.96	[0.89, 1.02]	1.9	0.167
Novelty × WASI	1.06	[1.01, 1.11]	6.6	0.010
EV × Age × WASI	1.37	[0.59, 3.17]	0.5	0.463
Uncertainty × Age × WASI	0.71	[0.46, 1.10]	2.3	0.128
Novelty × Age × WASI	1.48	[1.08, 2.02]	5.9	0.016
EV × Age2 × WASI	0.77	[0.34, 1.74]	0.4	0.534
Uncertainty × Age2 × WASI	1.35	[0.89, 2.06]	2.0	0.162
Novelty × Age2 × WASI	0.70	[0.52, 0.94]	5.2	0.022