Information processing is studied using physiological reactions to motion p
ictures as a major tool. In study I (N = 44) physiological reactions are su
bjected to multivariate analysis revealing three major dimensions: familiar
ization, effort, and readiness (cf Pribram and McGuinness, 1992). Each dime
nsion contrasts controlled processing with automatic processing. In study I
I (N = 72) and study III (N = 96) the dimensions are tested. In those studi
es specific information is provided prior to film onset and the effects on
the physiological reactions are studied. The results generally confirm the
model. Study IV (N = 44) is concerned with individual differences in inform
ation processing. Reactions to seven films are analysed with generalizabili
ty for each dimension separately. The results show that individual dimensio
n scores are highly consistent across different situations. In the discussi
on it is argued that the three information processing dimensions identified
here can be conceived as stable personality dispositions, underlying indiv
idual differences in learning and overt behaviour. Copyright (C) 2000 John
Wiley & Sons, Ltd.