No abstract

The relationship between perceived size and distance and oculomotor adjustments were assessed in two experiments. In both experiments, Ss were required to make scalar linear size, angular size, and distance judgments of stimuli subtending a constant retinal image size at different levels of convergence. The results of the first experiment indicate that the perceived linear size, angular size, and distance of the stimulus decreased with increased convergence, the decrease in perceived linear size being greater than that of perceived angular size. While again showing a decrease in perceived linear and angular size, the results of the second experiment also show that there was a smaller decrease in perceived distance with increased convergence when Ss continued to view the stimulus as convergence was changed than when they did not view the stimulus as convergence was changed. The implications these results have for size and distance perception are discussed.

English-French bilinguals with balanced listening and reading comprehension skills but slower second language reading skills participated in two-letter recognition tasks. These tasks were based upon a modification of Reicher's (ig6g) *This research was supported by a grant awarded to Melvin K. Komoda, Edward M. Brussell, and Norman Segalowitz by the Quebec Ministry of Education (FCAC -EQ-i 163).The second experiment was completed with the assistance of Vera Pederzoli. The authors would like to acknowledge her contribution to the research.

No abstract

Magnitude estimates of target brightness and clarity were obtained in a metacontrast paradigm as a function of stimulus onset asynchrony (SOA), target and mask duration, and fixation location. Under conditions of backward masking, effects on brightness and clarity were in opposite directions at short SOAs (i.e., judgments reflecting less clarity were accompanied by judgments that indicated increases in target brightness). However, at long SOAs and under conditions of forward masking, estimates of target brightness and clarity moved in the same direction. The results are discussed in the context of the "sustained-transient" theories of visual masking, and it is concluded that, in their present forms, these theories cannot completely handle the data we have reported.