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Correlations between parental nurturance (PN4, PN8) composite scores at the two ages, environmental stimulation (ES4, ES8) composite scores at the two ages, and total brain volume (TBV).
| PN4 | ES4 | PN8 | ES8 | TBV | |
|---|---|---|---|---|---|
| PN4 | -- | R = 0.51 p = 0.001** |
R = 0.07 p = 0.70 |
R = 0.04 p = 0.81 |
R = −0.25 p = 0.15 |
| ES4 | -- | R = 0.34 p = 0.04* |
R = 0.53 p = 0.001** |
R = −0.10 p = 0.52 |
|
| PN8 | -- | R = 0.45 p = 0.003** |
R = 0.04 p = 0.80 |
||
| ES8 | R = −0.08 p = 0.62 |
