Table 3 |
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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 2 -The cognitive form of impulsivity (factors 3 and 4) |
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|
|
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| Item |
Descriptor |
Factor 3 |
Factor 4 |
|
|
|||
| CP79 |
Easily distracted by extraneous ... |
0.886 |
|
|
|
|||
| CP37 |
Fails to finish things started |
1.000 |
|
|
|
|||
| SP15 |
Easily distracted, poor concentration |
0.924 |
|
|
|
|||
| CP12 |
Fails to complete assignment |
0.938 |
|
|
|
|||
| CP48 |
Get distracted even when instructed |
0.827 |
|
|
|
|||
| CP29 |
Does not follow instructions through |
0.872 |
|
|
|
|||
| CP80 |
Blurts out answers to questions |
0.694 |
|
|
|
|||
| CP42 |
Has difficulty waiting in line |
0.601 |
|
|
|
|||
| SP21 |
Thinks things out before acting |
-0.818 |
|
|
|
|||
| SP25 |
Good attention span, sees ... |
-0.961 |
|
|
|
|||
| CT26 |
Inattentive easily distracted |
0.865 |
|
|
|
|||
| CT52 |
Distractibility, or attention span poor |
0.858 |
|
|
|
|||
| ST15 |
Easily distracted, poor concentration |
0.842 |
|
|
|
|||
| CT58 |
Easily distracted by extraneous |
0.713 |
|
|
|
|||
| CT57 |
Does not follow instructions through |
1.000 |
|
|
|
|||
| CT17 |
Fails to finish things started |
0.922 |
|
|
|
|||
| ST21 |
Thinks things out before acting |
-0.481 |
|
|
|
|||
| ST25 |
Good attention span sees |
-0.958 |
|
|
|
|||
| Variance Explained |
16.0 |
12.8 |
|
|
|
|||
| Eigen Value |
2.53 |
1.07 |
|
|
|
|||
| Squared Multiple Correlation |
0.87 |
0.88 |
|
|
Item-codes from scales include C, Conners; S, Strengths and difficulties; P, Parent; T, Teacher. The combination of factors 1 and 2 relate to the behavioral aggression component, and factors 3 and 4 relate to the cognitive impulsivity component. Note: If represented as the sum, each form of impulsivity explained 28–29% of the variance. As the informants' ratings correlated highly the true contribution of the components would be approximately halved. | |||
Oades et al. Behavioral and Brain Functions 2008 4:48 doi:10.1186/1744-9081-4-48 |
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