Table 3.

Akaike information criterion for each model

Model #	AIC warm YS	AIC cold YS	AIC warm OS	AIC cold OS
1	15 ± 12	25 ± 19	14 ± 13	25 ± 16
2	11 ± 10	23 ± 17	11 ± 15	21 ± 19
3	12 ± 9	22 ± 17	9 ± 13	21 ± 19
4	11 ± 10	23 ± 17	10 ± 12	21 ± 18
5	11 ± 10	25 ± 20	9 ± 12	22 ± 19
6	13 ± 9	23 ± 17	11 ± 13	21 ± 18
7	10 ± 9	23 ± 17	13 ± 16	22 ± 20
8	15 ± 14	30 ± 20	17 ± 18	26 ± 21
9	11 ± 9	23 ± 18	13 ± 13	22 ± 18
10	11 ± 9	23 ± 17	13 ± 11	21 ± 18

Results are shown as mean ± standard deviation. AIC values were scaled to make them positive. Lower AIC values indicate better models

YS younger subjects, OS older subjects