An Investigation into Proactive Control deficits in psychometrically defined positive schizotypy using a modified Stroop task
Phipps-Magill, Llewellyn Kyle James
Cardiff Metropolitan University
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Dual mechanism of control makes a distinction between proactive control and reactive control. Previous literature suggests that schizophrenic patients have a deficit in proactive control. The schizophrenia spectrum continuum would suggest schizotypy to display the same effect on a minor level. Prior research using the Stroop task on schizotypy individuals has found no linear result, yet one study found positive schizotypy to have an increased Stroop interference using physical cards. The present study investigates proactive and reactive control deficits in positive schizotypy. By use of a modernised switch task Stroop, to increase sensitivity and specificity that has been a methodological confound in previous literature. The Data set of 38 participants (23 female, 14 male) were used. The results indicated significant Stroop interference across all groups and control however, there was no significant difference between types of control used or group performance. Additionally, no difference in proactive or reaction control for the magnitude of the difference was found. In future research, it is suggested to increase Stroop sensitivity by increasing congruent trials while also investigating one element of the schizotypy.
BSc (Hons) Psychology
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