Table 2.
Means and standard errors for discount rate and the estimated proportion of sooner choices for gains and losses. For gains, the same general trend was seen across measures: Unimpaired-older adults had lower discount rates than impaired-older adults or middle-aged adults (smaller numbers indicate less discounting). For losses, impaired-older adults chose the sooner option less often than middle-aged and unimpaired-older adults (note that for the estimated proportion of sooner choices among losses, smaller numbers indicate more discounting).
| Group | Discount Rate – Gains |
Est. Average Proportion of Soon Choices – Gains |
Discount Rate – Losses |
Est. Average Proportion of Soon Choices – Losses |
|---|---|---|---|---|
| Middle-Aged | 0.0078 (0.00132) |
0.47 (0.023) |
0.0021 (0.00061) |
0.82 (0.018) |
|
Unimpaired-
Older |
0.0065 (0.00213) |
0.35 (0.018) |
0.00342 (0.00087) |
0.79 (0.016) |
|
Impaired-
Older |
0.0097 (0.00342) |
0.44 (0.022) |
0.0031 (0.00080) |
0.71 (0.020) |