Table 1.
SRET positive and negative information processing scores by child 5-HTTLPR and BDNF val66met genotypes
|
Child Genotypes
|
||||||||
|---|---|---|---|---|---|---|---|---|
|
5-HTTLPR
|
BDNF val66met |
|||||||
| L/L |
L/S and S/S |
Val/Val |
Val/Met and Met/Met |
|||||
| Variable | M (SD) | N (%) | M (SD) | N (%) | M (SD) | N (%) | M (SD) | N (%) |
| Child sex (male) | 69 (48) | 185 (55) | 115 (50) | 139 (57) | ||||
| SES | 44.44 (11.09) | 44.92 (10.89) | 44.32 (10.61) | 45.21 (11.25) | ||||
| PPVT | 102.41 (13.32) | 103.45 (13.83) | 103.03 (14.22) | 103.24 (13.17) | ||||
| CDI | 6.92 (5.37) | 7.20 (4.92) | 7.32 (5.31) | 6.89 (4.80) | ||||
| SRET pos. ranka | 186.51 | 188.65 | 184.71 | 191.30 | ||||
| SRET neg. ranka | 174.91 | 193.72* | 193.07 | 182.90 | ||||
| Maternal depression | ||||||||
| No history | 84 (61) | 221 (69) | 145 (65) | 160 (69) | ||||
| Prior to child's birth | 37 (27) | 64 (20) | 55 (25) | 46 (20) | ||||
| During child's lifetime | 16 (12) | 35 (11) | 24 (11) | 51 (11) | ||||
Note: 5-HTTLPR, serotonin transporter linked polymorphic region; L, long allele; S, short allele; BDNF, brain derived neurotrophic factor; Val, valine; Met, methionine; SES, socioeconomic status, as indexed by Hollingshead's Four Factor Index of Social Status (Hollingshead, 1975); PPVT, Peabody Picture Vocabulary Test; CDI, Children's Depression Inventory; SRET, Self referent encoding task.
Mean ranks were tested using Mann–Whitney tests, because scores were not normally distributed because some children did not recal any affectively valenced adjectives that they had also endorsed; hence, they received a score of 0 on the relevant processing scale.
p < .05.