The Cognitive Bias Task and lateralized frontal lobe functions in males. Academic Article uri icon

Overview

abstract

  • The Cognitive Bias Task (CBT) is a multiple-choice response selection paradigm characterized by inherent ambiguity. All items offer a range from extremely context-dependent to extremely context-invariant responses. Lateralized prefrontal lesions produce extreme, and opposite, response biases on CBT in right-handed males. Healthy control subjects perform in the middle range. Findings suggest a dynamic balance between two synergistic decision-making systems in the frontal lobes: context-dependent in the left hemisphere and context-invariant in the right. The robust lateralized effects, which are dependent on task ambiguity, are sensitive and specific to frontal dysfunction. CBT is discussed in comparison with the Wisconsin Card Sorting Test as a potential cognitive activation task for functional neuroimaging of the frontal lobes.

publication date

  • January 1, 1995

Research

keywords

  • Attention
  • Brain Damage, Chronic
  • Decision Making
  • Dominance, Cerebral
  • Neuropsychological Tests
  • Prefrontal Cortex

Identity

Scopus Document Identifier

  • 0028800084

Digital Object Identifier (DOI)

  • 10.1176/jnp.7.4.491

PubMed ID

  • 8555753

Additional Document Info

volume

  • 7

issue

  • 4