Table 1.

Sample descriptive statistics

Descriptive	Young Adults		p-value	Older Adults		p-value
	Wake	Sleep		Wake	Sleep
No Interference Condition
N	20	38		11	25
Mean Age (SD)	21.52 (2.50)	20.66 (2.37)	0.182	65.54 (7.56)	63.17 (7.44)	0.363
Sex	11M, 9F	19M, 19F	0.973	4M, 7F	8M, 17F	0.878
Handedness	1L,19R	38R	0.402	11R	25R	0.922
Interference Condition
N	23	30		16	23
Mean Age (SD)	21.81(3.22)	21.29(2.61)	0.506	67.29(7.27)	66.26(6.93)	0.671
Sex	8M, 15F	14M, 16F	0.667	4M, 12F	6M, 17F	0.54
Handedness	23R	2L,28R	0.963	16R	23R	0.229
Conditions Combined
PSQI	3.91 (1.80)	4.27 (1.91)	0.327	4.15 (1.63)	3.34 (1.74)	0.053
SSS1	2.86 (1.10)	3.03 (1.28)	0.474	2.03 (0.98)	2.57 (1.16)	0.046
SSS2	2.67 (1.41)	2.66 (1.46)	0.964	2.67 (1.00)	2.02 (1.05)	0.012
# Loops at Encoding Immediate	2.42 (1.12)	2.24 (1.5)	0.387	4.43 (3.1)	3.27 (2.63)	0.372
Recall Accuracy	0.72 (0.12)	0.70 (0.13)	0.387	0.65 (0.12)	0.65 (0.12)	0.925

Handedness, Left-handed = L, Right-handed = R; Sex, Male = M, Female = F. Also shown here are mean questionnaire scores across experimental groups (higher questionnaire scores indicate poorer outcomes): Pittsburgh Sleep Quality Index (PSQI), Stanford Sleepiness Scale during session one (SSS1) and session two (SSS2), as well as differences in baseline performance. Values in parentheses represent standard deviations. p-values are provided for Wake vs. Sleep comparisons within each age group.