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. Author manuscript; available in PMC: 2015 Aug 4.
Published in final edited form as: J Child Psychol Psychiatry. 2013 Oct 10;55(3):237–246. doi: 10.1111/jcpp.12139

Table 2.

Means and standard deviations for the four groups on the T1 and T2 executive function measures and SWAN Questionnaire ratings. Main effects and interactions from the 2×2 ANOVA are also displayed.

TD FR LI FRLI Main effect Interaction
FR LI FR × LI
Measures N Mean SD N Mean SD N Mean SD N Mean SD F η p 2 F η p 2 F η p 2
T1 Tasks
 Visual Search efficiency score 68 0.13a 0.06 83 0.11a 0.06 25 0.05b 0.08 27 0.07b 0.07 0.02 0.00 33.44** 0.14 2.18 0.01
 Go/No-Go efficiency score 63 0.81a 0.22 69 0.75a 0.23 13 0.75a 0.25 17 0.65a 0.22 2.54 0.02 3.04 0.02 0.2 0.00
 HTKS (/40) 60 13.17a 12.22 67 8.63ab 10.28 17 1.35c 3.06 13 4.23bc 5.07 0.16 0.00 14.80** 0.09 3.10 0.02
T1 Executive Function factor score 69 0.58a 0.62 83 0.23b 0.60 32 −1.08c 0.65 29 −0.85c 0.54 0.45 0.00 219.60** 0.51 9.47 0.04
T2 Tasks
 Visual Search efficiency score 69 0.18a 0.05 82 0.16ab 0.06 29 0.11c 0.07 28 0.13bc 0.07 0.20 0.00 31.17** 0.13 4.95* 0.02
 ACPT efficiency score 66 0.17a 0.06 80 0.14b 0.10 27 0.10abc 0.15 25 0.05c 0.14 7.59** 0.04 25.89** 0.12 0.25 0.00
 HTKS (/40) 68 25.76a 9.93 79 21.90a 11.59 28 9.68b 11.67 27 9.70b 8.26 1.29 0.01 70.17** 0.26 1.22 0.01
 Block Recall (/ 54) 69 16.86a 3.36 82 15.51ab 4.30 26 14.23b 4.02 27 14.30b 3.75 1.05 0.01 9.51** 0.05 1.28 0.01
T2 Executive Function factor score 69 0.47a 0.51 83 0.11b 0.90 32 −0.81c 1.04 29 −0.52c 0.72 0.08 0.00 62.38** 0.23 7.30** 0.03
T2 SWAN Questionnaire
 Inattention (/63) 63 42.19a 6.49 76 40.36a 6.81 29 33.76b 10.1 25 35.32b 4.98 0.01 0.00 34.68** 0.16 2.21 0.01
 Hyperactivity (/63) 63 39.71a 6.87 77 40.05a 7.45 28 35.39ab 10.2 25 34.68b 8.20 0.02 0.00 14.72** 0.07 0.17 0.00
 Total (/126) 63 81.90a 12.17 76 80.41a 13.08 28 69.11b 19.5 25 70.00b 12.36 0.02 0.00 26.87** 0.13 0.29 0.00

Note:

*

p<.05;

**

p<.01;

means with different subscripts are significantly different (Games Howell post-hoc comparisons). Family risk only (FR), language impaired only (LI), family risk and language impaired (FRLI) and typically developing (TD).