Iculty level at which mastery was demonstrated. The data for each practice session have been fitted with Gaussian distributions in order to see more easily the shift toward lower Weber fractions with each session. The Rvalues (goodness of fit) for sessions 1 through 6 were 0.87, 0.67, 0.77, 0.81, 0.93, and 0.92, respectively.<p><b>Copyright information:</b></p><p>Taken from "The virtual haptic back: A simulation for training in palpatory diagnosis"</p><p>http://www.biomedcentral.com/1472-6920/8/14</p><p>BMC Medical Education 2008;8():14-14.</p><p>Published online 3 Apr 2008</p><p>PMCID:PMC2362113.</p><p></p