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. Author manuscript; available in PMC: 2012 Dec 1.
Published in final edited form as: J Child Psychol Psychiatry. 2011 Jul 13;52(12):1295–1307. doi: 10.1111/j.1469-7610.2011.02440.x

Table 2. Means and Standard Deviations for Attachment Security and Disorganization Scores as related to DRD2, DRD4 VNTR, COMT 5-HTT VNTR, and OXTR in both Samples.

Gene Risk model Generation R - Genotype (M, SD) SECCYD - Genotype (M, SD)


aa Aa AA aa Aa AA
M (SD) M (SD) M (SD) M (SD) M (SD) M (SD)
Security N N N N N N

DRD2 rs1800497 T (A1) 0.29 (2.62) 0.04 (2.56) 0.35 (2.73) 1.19 (3.05) 1.29 (3.38) 0.58 (3.83)
346 143 17 333 167 12
DRD4 VNTR 7+ 0.08 (2.61) 0.39 (2.39) -0.11 (3.32) 1.11 (3.22) 1.66 (2.88) 0.67 (3.74)
336 161 15 377 85 16
COMT rs4680 homozygous 0.22 (2.50) 0.26 (2.65) 0.15 (2.63) 0.77 (3.32) 1.31 (3.00) 1.39 (3.29)
135 250 121 140 245 137
5-HTT VNTR short -0.24 (2.50) 0.43 (2.61) 0.31 (2.68) 1.03 (3.31) 1.34 (3.09) 1.17 (3.15)
171 257 113 135 147 230
OXTR rs53576 A 0.19 (2.45) 0.14 (2.65) 0.18 (3.02) 1.29 (3.25) 1.02 (3.09) 1.70 (3.07)
224 269 52 216 234 62
OXTR rs2254298 A 0.19 (2.61) 0.08 (2.62) 1.62 (2.39) 1.16 (3.20) 1.31 (3.05) 1.05 (6.06)
430 111 6 396 104 3

Disorganization M (SD) M (SD) M (SD) M (SD) M (SD) M (SD)

DRD2 rs1800497 T(A1) 3.38 (1.89) 3.69 (1.88) 3.38 (2.26) 2.31 (1.96) 2.56 (2.11) 2.33 (2.02)
347 143 17 333 167 12
DRD4 VNTR 7+ 3.52 (1.95) 3.41 (1.87) 2.57 (1.43) 2.33 (1.97) 2.75 (2.27) 2.56 (2.45)
337 161 15 377 85 16
COMT rs4680 homozygous 3.07 (1.95) 3.73 (1.81) 3.39 (1.96) 2.12 (1.77) 2.58 (2.13) 2.31 (1.97)
136 250 121 140 245 137
5-HTT VNTR short 3.45 (1.90) 3.41 (1.85) 3.41 (2.04) 2.47 (2.10) 2.27 (2.00) 2.35 (1.95)
171 257 113 135 147 230
OXTR rs53576 A 3.60 (1.92) 3.38 (1.91) 3.09 (1.84) 2.50 (1.93) 2.28 (2.01) 2.39 (2.24)
225 269 52 216 234 62
OXTR rs2254298 A 3.40 (1.89) 3.62 (1.95) 2.00 (1.55) 2.35 (2.06) 2.51 (1.90) 1.67 (1.15)
431 111 6 396 104 3

Note. aa: homozygous for the typical (‘wildtype’) allele, Aa: heterozygous, AA: homozygous for minor allele. The risk model indicates the specific risk allele for the gene, which is the minor allele (except for COMT). Higher security scores indicate more security; higher disorganization scores indicate more disorganization. Methods for coding converged across samples.