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Have mixed model with 1 between 2 level factor; 1 repeated 2 level factor; 1 rpeated 5 level factor Dependent is some form of deviation form 'correct' Want to know best form of that deviation Possibilities are: raw(observed-correct), ratio(observed/correct), ln[ratio(observed/correct)] BIC value, with smaller being better are: BIC raw(observed-correct) = 2196 BIC ratio(observed/correct) = 57.5 BIC ln[ratio(observed/correct)] = 11.4 I already knew the raw was a non-starter Now would like, for theoretical reasons, to claim that ln(ratio) is better than ratio. Obviously 11 is lower than 57, but is it 'ENOUGH' lower? How would one know what is a difference in BIC large enough to be useful? Or put another way what IS the distribution of the BIC All help gratefully received Best Diana ________________________________ Emeritus Professor Diana Kornbrot email: [log in to unmask] web: http://dianakornbrot.wordpress.com/ Work Department of Psychology School of Life and Medical Sciences University of Hertfordshire College Lane, Hatfield, Hertfordshire AL10 9AB, UK voice: +44 (0) 170 728 4626 Home 19 Elmhurst Avenue London N2 0LT, UK voice: +44 (0) 208 444 2081 mobile: +44 (0) 740 318 1612 You may leave the list at any time by sending the command SIGNOFF allstat to [log in to unmask], leaving the subject line blank.