Table 2. Looking Times at During Pairing and Summation Test Phases.

Phase		Stimulus	Group
Pairing		NDEP	DEP
Trial 1	voice	5.59 (3.8)	5.11 (2.9)
	face	7.52 (2.9)	6.43 (3.9)
Trial 6	voice	4.91 (3.9)	5.68 (3.6)
	face	6.39 (3.5)	6.67 (2.3)
Summation Test
Trial 7	voice + checkerboard	7.87 (1.99)	6.77 (2.15)
Trial 8	checkerboard alone	6.71 (3.03)	6.41 (2.05)
Trial 9	checkerboard alone	5.17 (3.27)	6.06 (2.40)
Trial 10	voice + checkerboard	6.27 (2.40)	5.18 (3.58)
	mean difference score	1.13 (1.94)	-0.26 (1.59)

NDEP = infants of non-depressed mothers; DEP = infants of depressed mothers.

DS = mean difference score in seconds (looking on Trials 7+10 - Trials 8+9).