Source:The Training Methods Manual (Revised by) Julius Eitington, Dept of the Interior, National Parks Service, 1976 Where was it found? HathiTrust: Search term: “10% of what we” What was found? this chart: It is a generally recognized fact that we retain about: 10% of what we hear 20% of what we read 50% of what we see 90% of what we do   |