Sensitive Reactions and Afterimage Variegation

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Abstract
A group of 38 severe anxiety patients and a group of 36 acute schizophrenic patients produced series of afterimages (AIs) of a simple, red stimulus. It was predicted that projective tendencies in these patients would be revealed by lack of stable congruence between AI color and stimulus. Symptoms of sensitivity together with results from the MCT (Meta-Contrast Technique) served as criteria in the anxiety group and symptoms of paranoia in the schizophrenic group. The hypothesis was affirmed: despite the unicolored stimulation, sensitive and paranoid subjects tended to report variegated A1s or A1s shifting from one color to another. It was concluded that, in case this plastic type of perception remains more or less permanent, it would serve as a fruitful breeding-ground for projective defenses.