Table 1.
Multitrait multimethod matrix of self-report and behavioral assessments of impulsivity
| Self-Report | Behavioral Task | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Heterotrait-Monomethod | Heterotrait-Heteromethod | ||||||||
|
| |||||||||
| URGa | PERb | SSc | PREd | IMTa | GOSTa | MTTb | BARTc | SKIP | |
| URGa | −.10 | .09 | .05 | ||||||
| PERb | .12 | .15 | −.15 | −.09 | .00 | ||||
| SSc | .26* | −.30* | .01 | .22 | −.05 | .01 | |||
| PREd | .28* | .51*** | −.13 | .19 | −.05 | −.24 | −.05 | ||
|
| |||||||||
| Monotrait-Heteromethod | Heterotrait-Monomethod | ||||||||
|
| |||||||||
| IMTa | −.06 | .14 | |||||||
| GOSTa | .31* | .12 | −.08 | ||||||
| MTTb | −.17 | .29* | −.13 | −.01 | |||||
| BARTc | .12 | .01 | .08 | −.06 | −.08 | ||||
| SKIP | .13 | ||||||||
| Mean | 32.04 | 22.87 | 25.28 | 28.05 | 4.85 | 38.93 | 127604.92 | 36.87 | 3.09 |
| SD | 8.84 | 7.22 | 9.85 | 7.27 | 2.07 | 23.47 | 148425.01 | 14.33 | 1.72 |
Note. Self-report and behavioral tasks hypothesized to assess the same facet of impulsivity share the same subscript. Bottom left corner displays convergent validity correlations (monotrait-heteromethod), top right corner displays discriminant validity correlations (heterotrait-heteromethod). SD = Standard Deviation. URG = UPPS - negative urgency; PER = UPPS - lack of perseverance; SS = UPPS - sensation seeking; PRE = UPPS - lack of premediation; IMT = immediate memory task; GOST = go stop impulsivity paradigm; MTT = mirror tracing task; BART = balloon analogue risk task. SKIP = single key impulsivity paradigm.
*
p < .05
**
p < .01
***
p < .001. N = 58-69.