TABLE 1.

Scores of memory performance and memory consolidation as well as scores of intelligence (IQ) and learning ability (VLMT)

	FOL (n = 16)	LUT (n = 27)	OC (n = 19)	FOL versus LUT			FOL versus OC			OC versus LUT
				t	p	${\eta }_{\mathrm{p}}^2$	t	p	${\eta }_{\mathrm{p}}^2$	t	p	${\eta }_{\mathrm{p}}^2$
Behavioural data
RET1	74.47 ± 12.62	67.84 ± 18.02	74.49 ± 13.41	1.294	.203	0.039	−0.004	.997	0.000	1.364	.180	0.041
RET2	75.70 ± 12.71	69.95 ± 17.94	76.10 ± 13.55	1.123	.268	0.030	−0.089	.929	0.000	1.261	.214	0.035
ΔRET2 − RET1	1.23 ± 3.01	2.12 ± 2.92	1.61 ± 1.75	−0.953	.346	0.022	−0.447	.659	0.006	−0.733	.468	0.012
IQ	113.84 ± 13.12	112.81 ± 16.19	117.71 ± 9.51	0.215	.831	0.001	−1.009	.320	0.030	1.287	.205	0.036
∑R1−5	65.00 ± 4.90	63.56 ± 7.33	61.89 ± 5.72	0.699	.488	0.012	1.706	.097	0.081	−0.825	.414	0.015
				Z	p	r	Z	p	r	Z	p	r
R7	14.44 ± 0.96	13.85 ± 1.49	14.00 ± 1.29	−1.555	.120	−.237	−1.051	.293	−.178	−0.415	.678	−.061

Values are expressed as mean ± SD. Statistical trends are marked in bold.

Abbreviations: FOL, follicular phase; LUT, luteal phase; OC, oral contraceptive use; VLMT, Verbal Learning and Memory Task.

Word pair association task: RET1 = pre‐sleep recall performance, RET2 = post‐sleep recall performance, ΔRET2‐RET1 = memory consolidation. VLMT: ∑R1‐5 = total learning performance, R7 = free recall performance after a 30‐min time delay.