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Related Experiment Videos

Thought suppression, intelligence, and working memory capacity.

C R Brewin1, A Beaton

  • 1Subdepartment of Clinical Health Psychology, University College London, UK. c.brewin@ucl.ac.uk

Behaviour Research and Therapy
|August 21, 2002
PubMed
Summary
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Individual differences in intelligence and working memory capacity predict thought suppression ability. Higher working memory and fluid intelligence, but not crystallized intelligence, enhance intentional thought control.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Individual Differences

Background:

  • Understanding individual differences in cognitive abilities is crucial for explaining variations in complex mental processes.
  • Thought suppression, the ability to intentionally inhibit unwanted mental content, is a key cognitive function.
  • Previous research suggests links between cognitive abilities and thought control, but the specific roles of different intelligence types and working memory require further clarification.

Purpose of the Study:

  • To investigate the predictive power of individual differences in intelligence and working memory capacity on the ability to intentionally suppress thoughts.
  • To examine the independent contributions of working memory capacity, fluid intelligence, and crystallized intelligence to thought suppression efficacy.

Main Methods:

Related Experiment Videos

  • Sixty participants completed a thought suppression task.
  • Measures included working memory capacity (OSPAN), fluid intelligence (Raven's Matrices), and crystallized intelligence (National Adult Reading Test).

Main Results:

  • Effective thought suppression was independently associated with higher working memory capacity.
  • Greater fluid intelligence was also significantly related to more effective thought suppression.
  • Crystallized intelligence showed no significant relationship with the ability to suppress thoughts.

Conclusions:

  • Working memory capacity and fluid intelligence are key predictors of intentional thought suppression.
  • These findings offer insights into the cognitive mechanisms underlying the inhibition of unwanted intrusive thoughts.
  • The results have potential clinical implications for understanding and treating disorders characterized by intrusive thoughts and memories.