In this response, I will first summarize my 1988 argument on the issue
of expectancy. Second, I will re-evaluate that argument in the light
of the findings made by Sommer et al. and by others. Third, I will des
cribe some other problems with the 1988 views. Fourth, I will outline
the direction in which I feel that a hypothesis on the P3 complex shou
ld be pursued further.