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Anxiety and Depression Can Affect Cognitive Functioning

 

Cognitive functioning is a hierarchy of elements including low, middle, and high cognitive variables. It has been well established that depression and anxiety can affect cognitive abilities independently and together. But most of the existing research in this area has looked at unique variables of cognitive functioning, and there remain some questions as to how anxiety and depression affect overall, broad cognitive functioning. To address these questions, Timothy A. Salthouse of the Department of Psychology at the University of Virginia led a study that looked at the “g” factor, the broadest, most general collection of cognitive variables, and how this was affected by trait anxiety and depression using a sample of 3,781 participants ranging in age from 18 to 97. The participants were evaluated for symptom severity and completed a series of cognitive experiments that were designed to assess general cognitive ability and working memory.

Salthouse found that, in general, only the “g” factor, the broadest collection of cognitive domains, was affected by depression or anxiety. The participants with the most severe symptoms of depression and anxiety had the largest deficits in both working memory and on specific cognitive variables, but these were reduced significantly when Salthouse controlled for the “g” factor influence. These findings were consistent across all age groups, which could be due to the participant selection. “Perhaps because of the relatively high-functioning community sample, the effects of trait anxiety and depressive symptoms on cognitive functioning were rather small,” Salthouse said.

The participants in this study provided self-reports to describe their symptom severity. Salthouse cautions that these reports could be distorted to make them more socially acceptable, particularly in cases of older participants. Although this may limit the findings, the results of this study have important implications. Salthouse hopes this evidence will prompt clinicians to look at broad cognitive functioning rather than specific deficits when evaluating impairment and quality of life in people with depression or anxiety. Doing so may allow clinicians to determine the exact effect a psychological condition is having on a client and how this relates to specific areas of his or her life.

Reference:
Salthouse, Timothy A. How general are the effects of trait anxiety and depressive symptoms on cognitive functioning? Emotion 12.5 (2012): 1075-084. Print.

© Copyright 2012 by www.GoodTherapy.org Houston Bureau - All Rights Reserved.

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Comments
  • Kevin November 5th, 2012 at 3:16 PM #1

    Self reporting always seems to lead to both good and bad. The very best information will of course come from someone who feels comfortable enough ot be open and honest about nay given situation that they could be experiencing.

    But what about those who are afraid of being completely truthful about what they are experiencing? This is the kind of information that can seriously skew research results, and what good is that doing for either the researcher or the study group?

  • Earl November 5th, 2012 at 11:22 PM #2

    Whatever the condition,it rarely happens that only one area of functioning is affected. The various areas of our life and our functioning are closely related and when one is affected that in turn would manifest an effect in a different area. Hence the evaluation should look at the bigger picture.

  • nan November 6th, 2012 at 5:06 AM #3

    looks like for the next round of study you will need to get a group that is a little more random and diverse to participate

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