Jensen's use of the Hick paradigm: Visual attention and order effects

Longstreth (1984, 1986) and Carroll (1987) have recently raised questions concerning the effects of practice and order and retinal displacement in Jensen's use of the Hick paradigm. The results of this study indicate that the effect of practice and order is nonsignificant. The effect of retinal displacement, although significant, accounts for such a small amount of the variance as to be of little practical or theoretical importance in Jensen's investigations with the Hick paradigm.