Quellen:

• Rhodes, Jean; Roffman, Jennifer; Reddy, Ranjini; Fredriksen, Katia (2004): Changes in self-esteem during the middle school years: a latent growth curve study of individual and contextual influences. In: Journal of School Psychology 42 (3), S. 243–261. DOI: 10.1016/j.jsp.2004.04.001.
• Bos, Maarten W., and Amy J.C. Cuddy. "iPosture: The Size of Electronic Consumer Devices Affects our Behavior." Harvard Business School Working Paper, No. 13–097, May 2013.