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. Author manuscript; available in PMC: 2010 Nov 24.
Published in final edited form as: Neuroscience. 2009 Feb 3;164(1):16–29. doi: 10.1016/j.neuroscience.2009.01.056

TABLE 2. Response interference effects on task performanc.

Effects of information conflict on Stroop task (left) and flanker task (right) behavior, measured by computing differences in reaction times (top rows) and correct reaction rates (bottom rows) on incongruent relative to congruent stimulus trials. Columns ‘F’ and ‘p’ indicate results from statistical tests on AP-related differences between selected concordant or discordant twin samples. Degrees of freedom for the listed ‘F’ values are (1,14) and (1,6) for concordant and discordant twin comparisons, respectively. Asterisk indicates statistically significant difference.

Stroop incongruent-congruent flanker incongruent-congruent
measure sample CBCL-AP high CBCL-AP low F p CBCL-AP high CBCL-AP low F p
Reaction time Concordant 66.27 ± 54.04 48.80 ± 58.91 0.54 0.476 128.98 ± 55.23 86.07 ± 23.34 0.09 0.769
Discordant 59.98 ± 62.88 83.82 ± 99.68 1.02 0.351 94.24 ± 29.05 99.02 ± 27.50 0.00 0.966
Percentage correct Concordant -0.69 ± 3.13 -0.76 ± 3.59 0.17 0.689 -4.17 ± 4.09 -2.71 ± 2.32 6.28 0.025*
Discordant -3.09 ± 3.92 -0.15 ± 2.02 1.09 0.337 -3.40 ± 2.87 -3.24 ± 2.50 0.35 0.576