Table 6.
Results of the stepwise multiple linear regression of impulsivity in older adolescents (16–19) (N = 3118)
| Model 1 | Model 2 | Model 3 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B | SE | β | t | B | SE | β | t | B | SE | β | t | |
| Independent variables | ||||||||||||
| Parental attachment | −1.51 | 0.15 | −0.24 | −9.99*** | −1.22 | 0.15 | −0.19 | −7.97*** | −0.95 | 0.16 | −0.15 | −6.02*** |
| Emotion regulation | −0.26 | 0.04 | −0.18 | −7.51*** | −0.25 | 0.04 | −0.17 | −7.30*** | ||||
| Social group attachment | −0.90 | 0.16 | −0.14 | −5.78*** | ||||||||
| Model statistics | ||||||||||||
| R2 | 0.055 | 0.086 | 0.103 | |||||||||
| ΔR2 | 0.031 | 0.018 | ||||||||||
| Adj. R2 | 0.054 | 0.085 | 0.102 | |||||||||
| F | 99.69*** | 80.14*** | 65.67*** | |||||||||
| ΔF | 56.35*** | 33.46*** | ||||||||||
Parental attachment was measured using the Inventory of Parent and Peer Attachment (IPPA; Armsden & Greenberg, 1987; Portuguese version by Machado & Oliveira, 2007). Social group attachment was measured using the Social Group Attachment Scale (SGAS; Smith et al., 1999; Portuguese version by Dinis et al., 2008). Emotion regulation was measured using the Situational Test of Emotional Management-Brief (STEM-B; Allen et al., 2015; Portuguese version by da Motta et al., 2021). The unstandardized, as well as the standardized, regression coefficients are presented.
*p < 0.05; **p < 0.01; ***p < 0.001