Table 4.

Relation of hippocampal volume to virtual water maze performance

	Whole sample (n = 50)			Boys (n = 22)			Girls (n = 28)
	Hippocampal volume			Hippocampal volume			Hippocampal volume
	Left	Right	Intracranial volume	Left	Right	Intracranial volume	Left	Right	Intracranial volume
Acquisition (mean trial time)
Block 1a	−0.25†	−0.27†	−0.37**	−0.24	−0.33	−0.52*	−0.22	−0.20	−0.26
Blocks 2–3b	−0.55***	−0.48***	−0.64***	−0.40†	−0.33	−0.57**	−0.63***	−0.58**	−0.67***
Blocks 4–5c	−0.35*	−0.40**	−0.40**	−0.57**	−0.48*	−0.35	−0.12	−0.28	−0.39*
Probe trial (% time in platform quadrant)d	0.08	0.09	0.16	0.16	0.13	0.05	0.01	0.05	0.22

Values are Pearson r.

^†p < 0.10

^*p < 0.05

^**p < 0.01

^***p < 0.001

^aLeft hippocampus by sex interaction, t = −0.31, p = 0.759; Right hippocampus by sex interaction, t = −0.09, p = 0.932.

^bLeft hippocampus by sex interaction, t = −1.42, p = 0.163; Right hippocampus by sex interaction, t = −1.63, p = 0.110.

^cLeft hippocampus by sex interaction, t = 1.49, p = 0.144; Right hippocampus by sex interaction, t = −0.09, p = 0.932.

^dLeft hippocampus by sex interaction, t = −0.46, p = 0.649; Right hippocampus by sex interaction, t = −0.19; p = 0.851.