Table 2A.

The grand average mean values, in the N300 time-window (250–350 ms), shown for 11 frontal electrode sites (see Fig. 3), along with t-test and Bayes factor values

Condition	Cue	N	Mean (μV)	Mean difference (μV)	95% C.I.	t (19)	P	Bayes factor
Bad	Match	20	−7.1 ± 0.94	−2.06	−2.6 to −1.5	−7.4	5.6E−07	30 457
Good	Match	20	−5.1 ± 1.07
Bad	Mismatch	20	−6.4 ± 1.65	−0.47	−1.7 to 0.73	−0.82	0.42	0.31
Good	Mismatch	20	−6.0 ± 1.64
Good mismatch–Good match		20		−0.9	−1.84 to 0.04	−1.998	0.06	1.20
Bad mismatch-Bad match		20		0.68	−0.22 to 1.58	1.59	0.13	0.68

Notes: There is strong evidence (large Bayes factor) for greater negativity of the N300 for bad exemplars as compared with good exemplars when the cue matches the stimulus. When there is a mismatch between the cue and the stimulus there is no evidence (small Bayes factor) for the difference between good and exemplars in the N300 time-window. The t- test and Bayes factor calculations compared the within subject Good/Bad difference to 0.

± Values reflect the normed standard deviation within subjects.