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. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: Dev Psychol. 2010 Jan;46(1):93–105. doi: 10.1037/a0015466

Table 6.

Linear regression models conducted for aggregate data from the three studiesusing (a) congruent trials, (b) incongruent trials, and (c) neutral trials for the letter task collapsed across global and local conditions.

(a) Dependent variable: Congruent trials

Variable B SE B β ΔR2 t
PPVT 1.39 1.43 0.07 .02 0.97
Digit span 4.47 11.91 0.03 .00 0.38
Trails A 2.24 0.60 0.34 .17 3.75**
Trails B 0.49 0.26 0.17 .04 1.88
(b) Dependent variable: Incongruent trials
PPVT 1.83 1.79 0.08 .01 1.02
Digit span −2.36 14.96 −0.01 .00 −0.16
Trails A 1.79 0.74 0.22 .13 2.39*
Trails B 0.79 0.33 0.23 .13 2.41*
(c) Dependent variable: Neutral trials
PPVT 1.12 1.47 0.05 .01 0.76
Digit span −6.93 12.27 −0.04 .00 −0.56
Trails A 2.49 0.61 0.35 .24 4.06**
Trails B 0.72 0.46 0.18 .03 1.70
*

p < .01

**

p < .001