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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: J Exp Child Psychol. 2015 Sep 14;142:245–261. doi: 10.1016/j.jecp.2015.08.007

Table 1. Descriptive Statistics and Correlations among Model Variables.

1 2 3 4 5 6 7 8 9
1. Δ Power F3 5 months --
2. Δ Power F4 5 months .43** --
3. Δ Power F3 10 months -.01 .05 --
4. Δ Power F4 10 months .08 .09 .52** --
5. Baseline Power F3 10 months -.16** -.20** -.40** -.25** --
6. Baseline Power F4 10 months -.22** -.21** -.28** -.40** .80** --
7. Observed Attention 5 months .02 .10 -.03 -.03 -.05 -.03 --
8. Observed Attention 10 months .03 .12* -.12* .03 .12* -.07 .35** --
9. Observed Frustration 36 months -.05 -.05 .07 -.02 -.11 -.08 -.07 -.22** --
 Mean .03 .05 .07 .09 2.62 2.63 58.94 60.65 1.40
 Standard Deviation .31 .32 .31 .35 .53 .52 17.07 13.21 .52
 Minimum -.95 -1.10 -.91 -.94 .94 1.22 20.80 27.66 1.00
 Maximum 1.47 1.41 .94 2.23 4.30 4.11 94.84 94.73 4.00
 Skew (SE) .12(.13) .09(13) -.05(.13) .58(.13) -.10(.13) .09(.13) .01(.13) .07(.13) 1.60(.15)
 N 355 355 331 331 334 334 370 343 273

Note:

*

p < .05,

**

p < .01