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Updated: Oct 20, 2026
Dual-Task Stroop Paradigm for Detecting Cognitive Deficits in High-Functioning Stroke Patients
Published on: December 16, 2022
Computerized and traditional stroop task dysfunction in HIV-1 infection
C H Hinkin1, S A Castellon, D J Hardy
1Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles (UCLA) School of Medicine and VA Los Angeles Health Care System, 90024, USA. chinkin@ucla.edu
Abstract:
Controlled processing, response inhibition, and set adoption were examined in 51 HIV-1 infected participants and 21 uninfected controls who were administered a vocal reaction time (RT) version of the Stroop task (Stroop-RT; J. R. Stroop, 1935) as well as the traditional 100 item paper-and-pencil version. Response set expectancies on the Stroop-RT were manipulated by presenting 50% of trials in homogenous blocks and randomly varying the stimulus type during the remaining trials. As hypothesized, HIV seropositive (HIV+) participants were significantly slower than HIV seronegative controls on both versions of the Stroop. Significant interference effects were apparent on the paper-and-pencil version of the Stroop, but were not as prominent on the Stroop-RT. The HIV+ participants did profit from the blocking manipulation on the Stroop-RT, suggesting that set adoption is retained in HIV infection. These data suggest that HIV infection may result in deficient response inhibition, possibly secondary to frontostriatal dysfunction and dopaminergic alterations.
