TABLE 6.

Associations between docosahexaenoic acid (DHA) concentrations and behavioral performance on memory tasks¹

	Cord plasma DHA			Current plasma DHA
	n	r	Std β	n	r	Std β
CRT
Discrimination accuracy (d′)	149	−0.04	−0.02	151	−0.05	−0.04
Mean RT (new)	149	−0.11	−0.06	151	−0.07	−0.05
Mean RT (old)	149	−0.11	−0.09	151	−0.10	−0.07
WISC-IV
Digit span forward	149	0.26**	0.35**	151	0.12	0.15†
CVLT
Short-delay free recall	148	0.10	0.12	149	0.13	0.09
Long-delay free recall	148	0.06	0.08	149	0.02	−0.01
Recognition discriminability (d′) (log)	148	0.24**	0.18*	149	0.15†	0.05

¹Std β, standardized regression coefficients; CRT, continuous recognition memory task; RT, reaction time; WISC-IV, Wechsler Intelligence Scales for Children, 4th edition; CVLT, California Verbal Learning Test–Children's Version. All values were calculated from multiple regression analyses. Covariates included in the regression models were as follows—for Discrimination accuracy (d′): parity and cord polychlorinated biphenyl congener 153 (PCB 153) and cord lead concentrations; for Mean RT (new): parity; for Mean RT (old): parity and cord PCB 153 concentrations; for Digit span forward: age at testing, maternal education, socioeconomic status, maternal Raven's score, tobacco during pregnancy, and current PCB 153 and cord mercury concentrations; for Short-delay free trial: child sex, maternal Raven's score, adoption status, and current PCB 153 concentrations; for Long delay free trial: child sex, maternal age, maternal Raven's score, and adoption status; and for Recognition discriminability: child sex, maternal age, parity, maternal education, socioeconomic status, maternal Raven's score, breastfeeding duration, tobacco during pregnancy, adoption status, and current PCB 153 concentrations. **P < 0.01, *P < 0.05, ^†P < 0.10.