The BDI - II measures depressive symptomatology in 21 items and shows high validity in differentiating depressed from non-depressed individuals (Richter et al. 1998). (link.springer.com)
In theory, high school value - added measures should have higher validity in North Carolina because that state uses end - of - course exams, which should be better aligned to the curriculum than the single generic subject test in Florida. (carnegieknowledgenetwork.org)
This study reports high validity, reliability and consistency in self reports of «usual» and «recent» sleep positions (nsuworks.nova.edu)