Some studies of perception in relation to age.

Abstract

A series of experiments to discover extent of age differences in visual perception when temporal integration was required suggested that: Whore displays were simple, performance of different age groups was nearly equal, but with increasing complexity of displays older subjects were relatively increasingly slow in making correct identifications. With complex displays there was a relationship between degree of correct identification and (a) cumulative viewing time; (b) amount of display seen at one moment, such that an increase in both led to a greater improvement in performance of older subjects than an increase in either time or amount alone. Given a sufficient increase, performance of older subjects equalled that of younger. greater difficulty of older subjects with complex material appeared to be due mainly to greater amount of temporal integration required with such material.