“…The BPM-P specifically has been validated in an online recruited sample mainly from the Western United States with a mean child age of 11.5 years (Piper, Gray, Raber, & Birkett, 2014), a Norwegian version in a large sample from the general population with a mean child age of 10.6 years (Richter, 2015), and a German version in clinical and population-based samples with a mean child age of 11.5 and 12.3 years, respectively (Rodenacker, Plück, & Döpfner, 2015). Findings have shown acceptable internal consistency (α between .66 for Internalizing and .87 for Attention, and ≥ .83 for the Total problems score) and excellent concurrent validity with the corresponding scales of the CBCL/6-18 original long form (r between .83 for Internalizing and .97 for Attention, and ≥ .88 for the Total problems score) (Piper et al, 2014;Richter, 2015;Rodenacker et al, 2015).…”