middle childhood and early adolescence, the psychometric properties (e.g., reliability, acquiescence, factor coherence, and factor differentiation) and validity of self-report data are less established and at times questionable (Soto, John, Gosling, & Potter, 2008; Tackett et al., 2012). Bridging research across infant, child, adolescent, and adult development using metrically invariant measurement approaches that capitalize on the unique advantages of multiple sources of personality-relevant information should be a goal for future research.
