Table 7.

The proportion of younger and older adults who selected the risky vs. sure option or riskier of two risky options (i.e. the non-50% option) from each choice pair in Experiment 4.

	Set 1: Equal-EV Sure-Loss Set					Set 2: Equal-EV Sure-Gain Set
Risky Option (vs. Sure Option of −/+ $1, EV = −/+ $1)
Odds	50%	45%	40%	35%	30%	50%	45%	40%	35%	30%
Possible G/L	−2	−2.22	−2.50	−2.86	−3.33	2	2.22	2.50	2.86	3.33
Proportion of Adults Who Selected Risky Option
Younger Adults	.63	.53	.46	.67	.65	.33	.36	.36	.24	.30
Older Adults	.82	.70	.58	.70	.68	.22	.44	.30	.24	.28
	Set 3: Equal EV Risky-Loss Set					Set 4: Equal EV Risky-Gain Set
Riskier Non-50% Option (vs. 50% Option of −/+ $2, EV = −/+ $1)
Odds	45%	40%	35%	30%	25%	45%	40%	35%	30%	25%
Possible G/L	−2.22	−2.50	−2.86	−3.33	−4.00	2.22	2.50	2.86	3.33	4.00
Proportion of Adults Who Selected Risky Option
Younger Adults	.56	.56	.75	.58	.51	.33	.28	.19	.24	.38
Older Adults	.56	.52	.58	.58	.46	.30	.30	.22	.34	.40