Table 3.

Descriptive Statistics of Event-Related Potential (ERP) Data for Emotional Faces Task in the Attachment and Biobehavioral Catch-up (ABC; experimental intervention) Group, Developmental Education for Families (DEF; control intervention) Group, and Low-risk Comparison Group

Variable	CPS-Referred				Low-Risk Comparison (n = 30)
	ABC (n = 19)		DEF (n = 21)
	Mean (SD)	Min – Max	Mean (SD)	Min – Max	Mean (SD)	Min – Max
N170 (P7)- Crying	−3.39 (2.93)	−11.70 – 0.60	−2.67 (2.69)	−9.39 – 1.16	−3.79 (3.70)	−15.71 – 2.64
N170 (P7)- Laughing	−3.32 (2.32)	−9.66 – −0.39	−2.31 (2.26)	−8.01 – 1.19	−3.09 (3.30)	−13.69 – 4.52
N170 (P7)- Neutral	−2.49 (2.53)	−10.00 – 0.86	−2.15 (2.06)	−6.57 – 2.19	−2.80 (3.28)	−14.87 – 2.95
N170 (P8)- Crying	−4.37 (2.86)	−11.65 – −.02	−2.83 (2.26)	−7.02 – 2.39	−3.82 (3.22)	−12.83 – 2.20
N170 (P8)- Laughing	−3.31 (3.22)	−11.34 – 0.14	−2.68 (2.30)	−6.10 – 1.89	−4.11 (3.06)	−10.10 – 2.03
N170 (P8)- Neutral	−2.93 (2.93)	−10.00 – 0.60	−2.66 (2.24)	−6.78 – 0.69	−3.42 (2.61)	−8.85 – 3.42
LPP (Pz)- Crying	11.53 (6.44)	1.10 – 28.80	10.04 (4.68)	−2.50 – 19.00	9.77 (6.20)	−1.10 – 26.20
LPP (Pz)- Laughing	10.41 (4.94)	1.10 – 23.60	9.08 (4.77)	−2.60 – 17.70	8.40 (5.57)	−1.10 – 27.60
LPP (Pz)- Neutral	8.75 (5.34)	−1.82 – 25.21	9.75 (5.03)	1.26 – 19.92	7.97 (5.00)	−1.06 – 22.89

Note: CPS = Child Protective Services