These are the results of an analysis of error rates in Task 2, requested by one of you. For purposes of overall analyses, we consider that there are 16 trial types in Task 2 (Classification of rectangle sizes): 4 SOAs (50, 150, 300, 800 msec) x 2 CONTRASTS (brt, dim) x 2 DISCRIMINABILITIES (easy, hard). The first two tables are for all 30 subjects. The errors included were of type er.s and type er.ts; anticipations, bad key responses, and time-outs, all quite rare, were not included. -------------------------------------------------------------------- Table 1A: Total number of errors for each trial type , , brt easy hard 50 26 91 150 22 87 300 35 83 800 22 80 , , dim easy hard 50 23 91 150 31 112 300 40 108 800 25 102 Table 1B: Overall percentage of errors for each trial type. (obtained by multiplying the above by 100 / 713, where 713 is the approximate number of trials per trial type, across 30 subjects). , , brt easy hard 50 3.6 12.8 150 3.1 12.2 300 4.9 11.6 800 3.1 11.2 , , dim easy hard 50 3.2 12.8 150 4.3 15.7 300 5.6 15.1 800 3.5 14.3 -------------------------------------------------------------------- The next two tables are the same, but for the 23 selected subjects. -------------------------------------------------------------------- Table 2A: Total number of errors for each trial type , , brt easy hard 50 20 60 150 16 62 300 24 63 800 16 52 , , dim easy hard 50 13 68 150 21 77 300 28 74 800 12 71 Table 2B: Overall percentage of errors for each trial type. (obtained by multiplying the above by 100 / 546.6, where 546.6 is the approximate number of trials per trial type, across the 23 selected subjects). , , brt easy hard 50 3.7 11.0 150 2.9 11.3 300 4.4 11.5 800 2.9 9.5 , , dim easy hard 50 2.4 12.4 150 3.8 14.1 300 5.1 13.5 800 2.2 13.0 -------------------------------------------------------------------- Analyses by individual subjects; all subjects included Note that row sums and column sums are also provided. -------------------------------------------------------------------------------------- Effect of SOA sub1 sub11 sub12 sub13 sub14 sub2 sub21 sub22 sub23 sub24 sub25 sub26 sub27 sub28 50 5 12 2 3 3 12 2 15 7 6 8 4 4 23 150 7 8 2 4 5 13 8 13 9 9 10 3 7 26 300 4 14 3 7 3 14 8 20 4 5 11 1 3 26 800 4 11 7 3 2 12 5 8 10 2 13 3 4 21 SUMrow 20 45 14 17 13 51 23 56 30 22 42 11 18 96 sub29 sub3 sub30 sub31 sub41 sub42 sub43 sub44 sub46 sub47 sub48 sub5 sub6 sub7 50 9 11 9 3 10 5 4 8 7 6 11 13 9 8 150 6 9 5 1 10 15 4 3 7 13 12 8 9 10 300 12 7 9 1 7 5 6 6 11 13 12 24 10 6 800 6 4 6 3 8 11 7 4 12 8 14 27 7 1 SUMrow 33 31 29 8 35 36 21 21 37 40 49 72 35 25 sub8 sub9 SUMcol 50 2 10 231 150 3 13 252 300 2 12 266 800 0 6 229 SUMrow 7 41 978 -------------------------------------------------------------------------------------- Effect of CONTRAST sub1 sub11 sub12 sub13 sub14 sub2 sub21 sub22 sub23 sub24 sub25 sub26 sub27 sub28 brt 7 26 7 8 5 26 10 27 12 10 20 5 13 39 dim 13 19 7 9 8 25 13 29 18 12 22 6 5 57 SUMrow 20 45 14 17 13 51 23 56 30 22 42 11 18 96 sub29 sub3 sub30 sub31 sub41 sub42 sub43 sub44 sub46 sub47 sub48 sub5 sub6 sub7 brt 18 15 12 6 16 16 9 10 13 16 14 35 17 13 dim 15 16 17 2 19 20 12 11 24 24 35 37 18 12 SUMrow 33 31 29 8 35 36 21 21 37 40 49 72 35 25 sub8 sub9 SUMcol brt 5 16 446 dim 2 25 532 SUMrow 7 41 978 -------------------------------------------------------------------------------------- Effect of DSCRIM sub1 sub11 sub12 sub13 sub14 sub2 sub21 sub22 sub23 sub24 sub25 sub26 sub27 sub28 easy 3 21 2 4 2 23 5 21 8 6 6 0 6 21 hard 17 24 12 13 11 28 18 35 22 16 36 11 12 75 SUMrow 20 45 14 17 13 51 23 56 30 22 42 11 18 96 sub29 sub3 sub30 sub31 sub41 sub42 sub43 sub44 sub46 sub47 sub48 sub5 sub6 sub7 easy 2 3 4 1 1 7 0 2 5 9 12 35 5 2 hard 31 28 25 7 34 29 21 19 32 31 37 37 30 23 SUMrow 33 31 29 8 35 36 21 21 37 40 49 72 35 25 sub8 sub9 SUMcol easy 0 8 224 hard 7 33 754 SUMrow 7 41 978 -------------------------------------------------------------------------------------- Effect of RESP2 (i.e. effect of which response is required, "large" or "small") sub1 sub11 sub12 sub13 sub14 sub2 sub21 sub22 sub23 sub24 sub25 sub26 sub27 sub28 LG 20 18 3 10 6 36 13 34 17 18 25 2 8 15 SM 0 27 11 7 7 15 10 22 13 4 17 9 10 81 SUMrow 20 45 14 17 13 51 23 56 30 22 42 11 18 96 sub29 sub3 sub30 sub31 sub41 sub42 sub43 sub44 sub46 sub47 sub48 sub5 sub6 sub7 LG 23 18 9 5 22 10 10 10 29 23 17 32 21 13 SM 10 13 20 3 13 26 11 11 8 17 32 40 14 12 SUMrow 33 31 29 8 35 36 21 21 37 40 49 72 35 25 sub8 sub9 SUMcol LG 3 22 492 SM 4 19 486 SUMrow 7 41 978 --------------------------------------------------------------------------------------