Several systematic reviews (Uttl, 2005a, 2005b, 2008) reveal that ceiling and floor effects are prevalent in published research and suggest that clinicians and researchers do not understand what ceiling and floor effects are and what their impact on data interpretation is. We searched methods and statistics textbooks to determine if they educate future clinicians and researchers about ceiling and floor effects and their undesirable consequences. Surprisingly, majority of textbooks did not mention these artifacts and those that did rarely explained how to detect ceiling and floor effects, consequences of these artifacts, and how to interpret ceiling or floor limited data.