| RFR | Risk Factor Research |
| FPEB | Family, Peers, and Externalising Behaviour (the new tool focus of the present study) |
| EFA | Exploratory Factor Analysis |
| CFA | Confirmatory Factor Analysis |
| RMSEA | Root-mean-square error of approximation |
| SRMR | Standardized root-mean-square residual |
| CFI | Comparative Fit Index |
| SES | Socio-economic status |
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