The effect body composition information has on people: semantics/words; use adipose tissue rather than saying fat, emotions elicited in lab testing, anxiety/frustration/discouragement/bad feelings, be aware that there is a lot of tendency to rank themselves based on numbers. Studies of grade-school girls, and even in grade 1, girls think the culture is telling them they should model themselves after celebrities who are svelte (slender). Those girls were shown to have the highest body esteem. Fat is good: energy storage, vitamin storage fat soluble vitamins, protection (physical) especially in elderly people who are lean and frail, protection (cold, maintain serum lipids (lipid layers of cell membranes, burn fat (thermogenesis- shivering) Measurement errors and biological variability: standard error of the estimate, represents a range where there is a 68% probability for the true value to be located. Percent adipose from skin folds: depending on calculations, plus or minus 3. 5, ex.