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Principle components analysis (oblique rotation) of 47 items of impulsivity: Parent and teacher ratings from Conners and SDQ questionnaires (CP, SP and CT, ST, respectively). |
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| Part 1 – The aggressive behavioral form of impulsivity (factors 1 and 2) |
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| Item |
Descriptor |
Factor 1 |
Factor 2 |
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| CP47 |
Temper outbursts |
0.950 |
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| CP21 |
Loses temper |
0.893 |
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| SP5 |
Often has temper tantrums |
0.896 |
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| CP31 |
Irritable |
0.840 |
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| CP57 |
Touchy or easily annoyed |
0.859 |
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| CP77 |
Mood changes quickly |
0.820 |
|
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| CP1 |
Angry and resentful |
0.916 |
|
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| CP40 |
Actively defies or refuses to |
0.780 |
|
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| CP11 |
Argues with adults |
0.826 |
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| CP68 |
Demands to be met at once |
0.598 |
|
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| CP28 |
Excitable, impulsive |
0.356 |
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| CP70 |
Spiteful or vindictive |
1.000 |
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| SP12 |
Often fights with other children |
0.588 |
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| CP66 |
Disturbs other children |
0.294 |
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| CP64 |
Get upset if someone rearranges |
0.947 |
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| SP7 |
Generally obedient, usually ... |
-0.510 |
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| ST5 |
Often has temper tantrums |
1.000 |
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| CT7 |
Temper outbursts; explosive, |
0.972 |
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| CT45 |
Demands must be met at once |
0.898 |
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| CT54 |
Mood changes quickly, drastically |
0.945 |
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| CT37 |
Argues with adults |
0.957 |
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| CT55 |
Interrupts or intrudes on others |
0.655 |
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| CT8 |
Excitable, impulsive |
0.661 |
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| CT29 |
Has difficulty waiting in turn |
0.606 |
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| CT46 |
Blurts out answers to question |
0.674 |
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| ST12 |
Often fights with other children |
0.922 |
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| CT47 |
Spiteful or vindictive |
0.989 |
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| CT20 |
Leaves seat in classroom or |
0.544 |
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| ST7 |
Generally obedient, usually |
-0.700 |
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| ST25 |
Good attention span sees |
-0.958 |
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| Variance Explained |
14.6 |
13.2 |
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| Eigen Value |
20.4 |
4.42 |
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| Squared Multiple Correlation |
0.92 |
0.90 |
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Oades et al. Behavioral and Brain Functions 2008 4:48 doi:10.1186/1744-9081-4-48 |
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