Further evidence of attention bias for negative information in late life depression
Abstract
Objectives: Pilot research using the manual (card based) emotional Stroop paradigm shows depressed elders selectively attend negative words, whereas dementia patients do not. The present study aimed to confirm this effect, using a more controlled, computerised, emotional Stroop paradigm, and accounting for co‐morbid anxiety. Method: Nineteen depressed (DEP) and twenty non depressed control participants (CON) completed a computerised Emotional Stroop task. This task involves colour naming individually presented negative, positive and neutral words. Mean participant age was 72.25 years. All participants were free of significant cognitive impairment. Results: Consistent with hypotheses, analysis of variance revealed a general cognitive slowing amongst DEP, and a specific interference effect for negative words, in this group, suggesting attention bias. Conclusions: Previous pilot data are confirmed. The emotional Stroop paradigm may have clinical potential for distinguishing geriatric depression and dementia, although as yet this is far from clear. Detailed development work including comparison with depressed and non depressed Alzheimer's patients, will be necessary to demonstrate diagnostic validity. Copyright © 2006 John Wiley & Sons, Ltd.
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Cites
An inventory for measuring clinical anxiety: Psychometric properties.
Beck, A. T., Epstein, N., Brown, G., & Steer, R. A. (1988) · Journal of Consulting and Clinical Psychology · doi:10.1037/0022-006x.56.6.893 · Cited by 14,407 · see citing works
Attentional bias in emotional disorders.
MacLeod, C., Mathews, A., & Tata, P. R. (1986) · Journal of Abnormal Psychology · doi:10.1037//0021-843x.95.1.15 · Cited by 2,553 · see citing works
The emotional Stroop task and psychopathology
Williams, J. M. G., Mathews, A., & MacLeod, C. (1996) · Psychological Bulletin · doi:10.1037/0033-2909.120.1.3 · Cited by 2,420 · see citing works
Methods for dealing with reaction time outliers.
Ratcliff, R. (1993) · Psychological Bulletin · doi:10.1037/0033-2909.114.3.510 · Cited by 2,142 · see citing works
Cognitive Psychology and Emotional Disorders
Williams, J. M. G. (1988) · UWA Profiles and Research Repository (UWA) · Cited by 1,871 · see citing works
Evaluating stress : a book of resources
Zalaquett, C. P., & Wood, R. J. (1997) · Scarecrow Press eBooks · Cited by 1,176 · see citing works
Review of community prevalence of depression in later life
Beekman, A. T. F., Copeland, J. R. M., & Prince, M. J. (1999) · The British Journal of Psychiatry · doi:10.1192/bjp.174.4.307 · Cited by 1,139 · see citing works
Cognitive Psychology and Emotional Disorders
Wilhelm, S. A. (1998) · Journal of Behavior Therapy and Experimental Psychiatry · Cited by 1,108 · see citing works
Anthony, J. C., LeResche, L., Niaz, U., Korff, M. R. V., & Folstein, M. F. (1982) · Psychological Medicine · doi:10.1017/s0033291700046730 · Cited by 1,105 · see citing works
Mood-congruent recall of affectively toned stimuli: A meta-analytic review
Matt, G. E., Vázquez, C., & Campbell, W. K. (1992) · Clinical Psychology Review · doi:10.1016/0272-7358(92)90116-p · Cited by 726 · see citing works
Selective Attention to Angry Faces in Clinical Social Phobia.
Mogg, K., Philippot, P., & Bradley, B. P. (2004) · Journal of Abnormal Psychology · doi:10.1037/0021-843x.113.1.160 · Cited by 582 · see citing works
Attentional bias in generalized anxiety disorder versus depressive disorder.
Mogg, K., & Bradley, B. P. (2005) · Cognitive Therapy and Research · doi:10.1007/s10608-005-1646-y · Cited by 565 · see citing works
Cognitive performance in tests sensitive to frontal lobe dysfunction in the elderly depressed
Beats, B. C., Sahakian, B. J., & Levy, R. (1996) · Psychological Medicine · doi:10.1017/s0033291700035662 · Cited by 457 · see citing works
Coherence and Specificity of Information-Processing Biases in Depression and Social Phobia.
Gotlib, I. H., Kasch, K. L., Traill, S., Joormann, J., Arnow, B. A., & Johnson, S. L. (2004) · Journal of Abnormal Psychology · doi:10.1037/0021-843x.113.3.386 · Cited by 396 · see citing works
A quantitative review of cognitive deficits in depression and Alzheimer-type dementia
Christensen, H. M., Griffiths, K. M., Mackinnon, A. J., & Jacomb, P. A. (1997) · Journal of the International Neuropsychological Society · doi:10.1017/s1355617797006310 · Cited by 297 · see citing works
van Marwijk, H., Wallace, P., de Bock, G. H., Hermans, J., Kaptein, A. A., & Mulder, J. (1995) · Europe PMC (PubMed Central) · Cited by 296 · see citing works
Depression in Elderly Hospitalized Patients With Medical Illness
Koenig, H. G. (1988) · Archives of Internal Medicine · doi:10.1001/archinte.1988.00380090031009 · Cited by 291 · see citing works
Evidence for attention to threatening stimuli in depression.
Mathews, A., Ridgeway, V., & Williamson, D. (1996) · Behaviour Research and Therapy · doi:10.1016/0005-7967(96)00046-0 · Cited by 265 · see citing works
Cronin‐Stubbs, D., de Leon, C. F. M., Beckett, L. A., Field, T. S., Glynn, R. J., & Evans, D. A. (2000) · Archives of Internal Medicine · doi:10.1001/archinte.160.20.3074 · Cited by 175 · see citing works
Differential validity of psychometric tests in dementia of the Alzheimer type
Ihl, R., Frölich, L., Dierks, T., Martin, E.-M., & Maurer, K. (1992) · Psychiatry Research · doi:10.1016/0165-1781(92)90044-4 · Cited by 135 · see citing works
Is vascular depression a distinct sub-type of depressive disorder? A review of causal evidence
Baldwin, R. (2004) · International Journal of Geriatric Psychiatry · doi:10.1002/gps.1255 · Cited by 109 · see citing works
Anxiety and depression: Why and how to measure their separate effects
Beuke, C. J., Fischer, R. D., & McDowall, J. (2003) · Clinical Psychology Review · doi:10.1016/s0272-7358(03)00074-6 · Cited by 102 · see citing works
Taghavi, M. R., Dalgleish, T., Moradi, A., Doost, H. T. N., & Yule, W. (2003) · British Journal of Clinical Psychology · doi:10.1348/01446650360703348 · Cited by 95 · see citing works
Depression and Mortality in Medically Ill Older Adults
Ganzini, L. K., Smith, D. M., Fenn, D. S., & Lee, M. A. (1997) · Journal of the American Geriatrics Society · doi:10.1111/j.1532-5415.1997.tb00945.x · Cited by 94 · see citing works
Attentional Bias in People With Acute Versus Persistent Insomnia Secondary to Cancer
Taylor, L. M., Espie, C. A., & White, C. A. (2003) · Behavioral Sleep Medicine · doi:10.1207/s15402010bsm0104_3 · Cited by 87 · see citing works
Treatment of depression in late life
Karel, M. J., & Hinrichsen, G. A. (2000) · Clinical Psychology Review · doi:10.1016/s0272-7358(99)00065-3 · Cited by 79 · see citing works
Laidlaw, K. (2001) · Clinical Psychology & Psychotherapy · doi:10.1002/cpp.276 · Cited by 60 · see citing works
Covert and overt attention in trait anxiety: a cognitive psychophysiological analysis
Broomfield, N. M., & Turpin, G. (2004) · Biological Psychology · doi:10.1016/j.biopsycho.2004.04.008 · Cited by 58 · see citing works
Self-citationPersistence of depressive cognitions within a subgroup of depressed inpatients
Miller, I. W., & Norman, W. H. (1986) · Cognitive Therapy and Research · doi:10.1007/bf01173726 · Cited by 46 · see citing works
Dudley, R. E. J., O'Brien, J. T., Barnett, N., McGuckin, L., & Britton, P. G. (2002) · International Journal of Geriatric Psychiatry · doi:10.1002/gps.514 · Cited by 45 · see citing works
Predictors of increased mortality in elderly depressed patients
Burvill, P. W., & Hall, W. (1994) · International Journal of Geriatric Psychiatry · doi:10.1002/gps.930090307 · Cited by 38 · see citing works
Differential diagnosis of dementia and depression.
Kaszniak, A. W., & Christenson, G. D. (2004) · American Psychological Association eBooks · doi:10.1037/10157-005 · Cited by 35 · see citing works
Trick, L., Stanley, N., Rigney, U., & Hindmarch, I. (2004) · Journal of Psychopharmacology · doi:10.1177/0269881104042622 · Cited by 34 · see citing works
Brains, Biases, Deficits and Disorders
Bentall, R. P. (1995) · The British Journal of Psychiatry · doi:10.1192/s0007125000064254 · Cited by 23 · see citing works
Fifth-generation research tools: Collaborative development with PowerLaboratory
Chute, D. L., & Westall, R. F. (1996) · Behavior Research Methods, Instruments, & Computers · doi:10.3758/bf03204788 · Cited by 13 · see citing works
Depression and cognitive decline in the elderly: A follow-up study
Nussbaum, P. D., Kaszniak, A. W., Allender, J. R., & Rapcsak, S. Z. (1995) · The Clinical Neuropsychologist · doi:10.1080/13854049508401592 · Cited by 13 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Drevets, W. C., Price, J. L., & Furey, M. L. (2008) · Brain Structure and Function · doi:10.1007/s00429-008-0189-x · Cited by 2,209 · see citing works
“In the context of attention paradigms, depression-related negative words produce more interference on emotional stroop tasks than do happy or neutral words (Broomfield et al. 2006; Gallardo Perez et al. 1999).”
BackgroundNeurocircuitry of Mood Disorders
Price, J. L., & Drevets, W. C. (2010) · Neuropsychopharmacology · doi:10.1038/npp.2009.104 · Cited by 1,606 · see citing works
“…et al, 1995; Murray et al, 1999), greater interference from depressionrelated negative words vs happy or neutral words on emotional stroop tasks (Broomfield et al, 2007; Gallardo- Perez et al, 1999), faster responses to sad vs happy words on affective attention shifting tasks (Murphy et al,…”
BackgroundNeural circuits underlying the pathophysiology of mood disorders
Price, J. L., & Drevets, W. C. (2012) · Trends in Cognitive Sciences · doi:10.1016/j.tics.2011.12.011 · Cited by 788 · see citing works
A meta-analysis of the magnitude of biased attention in depression
Peckham, A. D., McHugh, R. K., & Otto, M. W. (2010) · Depression and Anxiety · doi:10.1002/da.20755 · Cited by 647 · see citing works
Cognitive Mechanisms of Treatment in Depression
Roiser, J. P., Elliott, R., & Sahakian, B. J. (2012) · Neuropsychopharmacology · doi:10.1038/npp.2011.183 · Cited by 535 · see citing works
Affective Cognition and its Disruption in Mood Disorders
Elliott, R., Zahn, R., Deakin, J. F. W., & Anderson, I. M. (2011) · Neuropsychopharmacology · doi:10.1038/npp.2010.77 · Cited by 330 · see citing works
“For example, depressed patients show elevated interference (reflected by slower reaction times) in response to negatively valenced words in an emotional Stroop task (see Gotlib and McCann, 1984; Segal et al, 1995; Broomfield et al, 2007; Williams et al, 1996 for a review).”
BackgroundExploring the roles of approach and avoidance in depression: An integrative model
Trew, J. L. (2011) · Clinical Psychology Review · doi:10.1016/j.cpr.2011.07.007 · Cited by 316 · see citing works
A systematic meta-analysis of the Stroop task in depression
Epp, A., Dobson, K. S., Dozois, D. J. A., & Frewen, P. (2012) · Clinical Psychology Review · doi:10.1016/j.cpr.2012.02.005 · Cited by 235 · see citing works
Implicit cognition and depression: A meta-analysis
Phillips, W. J., Hine, D. W., & Thorsteinsson, E. B. (2010) · Clinical Psychology Review · doi:10.1016/j.cpr.2010.05.002 · Cited by 182 · see citing works
Chronic mild stress for modeling anhedonia
Wiborg, O. (2013) · Cell and Tissue Research · doi:10.1007/s00441-013-1664-0 · Cited by 138 · see citing works
“1995), stronger interference from negative valenced words versus happy or neutral words in emotional stroop tasks (Broomfield et al. 2006; Gallardo Perez et al. 1999), faster responses to sad versus happy valenced words on affective attention shifting tasks (Murphy et al.”
BackgroundModelling cognitive affective biases in major depressive disorder using rodents
Hales, C. A., Stuart, S. A., Anderson, M. H., & Robinson, E. S. J. (2014) · British Journal of Pharmacology · doi:10.1111/bph.12603 · Cited by 122 · see citing works
The Comorbidity of PTSD and MDD: Implications for Clinical Practice and Future Research
Angelakis, S., & Nixon, R. D. V. (2015) · Behaviour Change · doi:10.1017/bec.2014.26 · Cited by 109 · see citing works
Post‐stroke depression: the case for augmented, individually tailored cognitive behavioural therapy
Broomfield, N. M., Laidlaw, K., Hickabottom, E., Murray, M. F., Pendrey, R., Whittick, J. E., & Gillespie, D. C. (2011) · Clinical Psychology & Psychotherapy · doi:10.1002/cpp.711 · Cited by 99 · see citing works
Self-citationJoyal, M., Wensing, T., Levasseur‐Moreau, J., Leblond, J., Sack, A. T., & Fecteau, S. (2019) · PLoS ONE · doi:10.1371/journal.pone.0214998 · Cited by 72 · see citing works
Hülür, G., Hertzog, C. K., Pearman, A. M., Ram, N., & Gerstorf, D. (2014) · Psychology and Aging · doi:10.1037/a0037619 · Cited by 67 · see citing works
“, 2013), cognitive slowing (Broomfield et al., 2007), and apathy (Lampe & Heeren, 2004; Mehta et al.”
BackgroundAntidepressant medications in dementia: evidence and potential mechanisms of treatment-resistance
Costello, H., Roiser, J. P., & Howard, R. (2023) · Psychological Medicine · doi:10.1017/s003329172200397x · Cited by 60 · see citing works
“…exhibit impairments in affective attention and attentional shifting (Roiser et al., 2012; Taylor Tavares et al., 2007): (cid:129) In emotional Stroop tasks patients exhibit delayed naming of the colour of negative words (Broomfield, Davies, MacMahon, Ali, & Cross, 2007; Roiser et al., 2012).”
Application of a cognitive neuroscience perspective of cognitive control to late-life anxiety
Beaudreau, S. A., MacKay‐Brandt, A., & Reynolds, J. R. (2013) · Journal of Anxiety Disorders · doi:10.1016/j.janxdis.2013.03.006 · Cited by 60 · see citing works
“On the emotional Stroop task, older individuals with MDD with anxiety (vs. non-depressed and non-anxious controls; Broomfield et al., 2007) or high worry (vs.”
MethodSelective Control of Attention Supports the Positivity Effect in Aging
Sasse, L. K., Gamer, M., Büchel, C., & Brassen, S. (2014) · PLoS ONE · doi:10.1371/journal.pone.0104180 · Cited by 57 · see citing works
Emotion processing in depression and anxiety disorders in older adults: systematic review
Gray, V., Douglas, K. M., & Porter, R. (2020) · BJPsych Open · doi:10.1192/bjo.2020.143 · Cited by 41 · see citing works
Laeng, B., Sæther, L., Holmlund, T. B., Wang, C. E. A., Waterloo, K. K., Eisemann, M. R., & Halvorsen, M. B. (2013) · Frontiers in Psychology · doi:10.3389/fpsyg.2013.00291 · Cited by 27 · see citing works
Wu, Z., Zhong, X., Peng, Q., Chen, B., Mai, N., & Ning, Y. (2017) · Journal of Psychiatric Research · doi:10.1016/j.jpsychires.2017.08.019 · Cited by 26 · see citing works
Neuropsychology of affective disorders
Roiser, J. P., Rubinsztein, J. S., & Sahakian, B. J. (2009) · Psychiatry · doi:10.1016/j.mppsy.2008.11.007 · Cited by 24 · see citing works
Callahan, B. L., Simard, M., Mouiha, A., Rousseau, F., Laforce, R. J., & Hudon, C. (2016) · Journal of Alzheimer s Disease · doi:10.3233/jad-150585 · Cited by 21 · see citing works
A Pilot Study of Metacognitive Training (D-MCT) for Older Adults with Depression
Schneider, B. C., Bücker, L., Riker, S., Karamatskos, E., & Jelinek, L. (2018) · Zeitschrift für Neuropsychologie · doi:10.1024/1016-264x/a000210 · Cited by 20 · see citing works
Fang, Z., Lynn, E., Huc, M., Fogel, S. M., Knott, V., & Jaworska, N. (2022) · Cortex · doi:10.1016/j.cortex.2022.07.010 · Cited by 20 · see citing works
Cognitive variability, brain aging, and cognitive decline in late‐life major depression
Manning, K. J., Preciado-Piña, J., Wang, L., Fitzgibbon, K. E., Chan, G., & Steffens, D. C. (2020) · International Journal of Geriatric Psychiatry · doi:10.1002/gps.5465 · Cited by 18 · see citing works
Emotional Processing Deficits in Late-Life Depression
Mah, L., & Pollock, B. G. (2010) · American Journal of Geriatric Psychiatry · doi:10.1097/jgp.0b013e3181d6b762 · Cited by 18 · see citing works
Negative Emotional Verbal Memory Biases in Mild Cognitive Impairment and Late-Onset Depression
Mah, L., Anderson, N. D., Verhoeff, N. P. L. G., & Pollock, B. G. (2017) · American Journal of Geriatric Psychiatry · doi:10.1016/j.jagp.2017.05.005 · Cited by 18 · see citing works
The need to change: Is there a critical role of midlife adaptation in mental health later in life?
Thams, F., & Brassen, S. (2023) · eLife · doi:10.7554/elife.82390 · Cited by 12 · see citing works
“First, there is the PE in healthy aging ( Reed et al., 2014 ), which contrasts with a negativity bias in LLD ( Broomfield et al., 2007 ).”
Baruch, N., Behrman, S., Wilkinson, P., Bajorek, T., Murphy, S. E., & Browning, M. D. (2021) · International Journal of Geriatric Psychiatry · doi:10.1002/gps.5557 · Cited by 12 · see citing works
Tanzer, M., Shahar, G., & Avidan, G. (2014) · Frontiers in Human Neuroscience · doi:10.3389/fnhum.2014.00602 · Cited by 9 · see citing works
“…response time to name the color of an emotional written word indicates their ability to disengage from the emotional context, depressed patients were slower to name the color of negative emotional words, compared to non-depressed controls (Gotlib and McCann, 1984; Broomfield et al., 2007).”
Callahan, B. L., Laforce, R. J., Dugas, M. J., & Hudon, C. (2016) · International Psychogeriatrics · doi:10.1017/s1041610216002179 · Cited by 7 · see citing works
“On the other hand, LLD patients tend to allocate more cognitive resources to processing negative stimuli compared to positive or neutral information (Broomfield et al., 2007; but see Mah and Pollock, 2010).”
BackgroundSilva, C., Ferreira, R., Morgado, B., Schneider, B. C., João, A. L. D. S., Sampaio, F., de Pinho, L. G., & da Fonseca, C. J. V. (2024) · Nursing Reports · doi:10.3390/nursrep14030165 · Cited by 4 · see citing works
“As in the case of younger adults, the use of a catastrophic coping style [31,32] and a focus on negative information have been associated with depressive symptoms in older adults [33].”
BackgroundAntidepressant-Like Effects of Ketamine on Fear Conditioning and Extinction
Kulyk, B. D. (2017) · University Library - University of Saskatchewan (University of Saskatchewan) · Cited by 4 · see citing works
Li, D., Li, D., Liu, R., Zang, Z., Liu, K., Feng, Y., Zhou, J., Yang, Z., & Wang, G. (2026) · Psychological Medicine · doi:10.1017/s0033291726103171 · Cited by 2 · see citing works
“…studies have reported similar findings (Chechko et al., 2013; Fournier et al., 2017; Strand et al., 2013), others have documented clearer behavioral impairments in MDD (Alders et al., 2019; Broomfield et al., 2007; Gupta & Kar, 2012; Ros Segura et al., 2021; Wang et al., 2021; Xue et al., 2017).”
Takizawa, H., Ishioka, T., Koizumi, K., Tayama, J., Suzuki, M., Nakaya, N., & Hamaguchi, T. (2020) · International Journal of Behavioral Medicine · doi:10.1007/s12529-020-09940-2 · Cited by 2 · see citing works
Depression im Alter – Eine Frage der Emotionsregulation
Becker-Hingst, N. (2023) · Springer eBooks · doi:10.1007/978-3-658-41449-8 · Cited by 1 · see citing works
Attentional biases in dysphoric college students
Pena-Esparza, Y. (2011) · UNM’s Digital Repository (University of New Mexico) · Cited by 2 · see citing works
A network perspective on cognitive function and obsessive-compulsive related symptoms
Pan, Y., Xu, C., He, T., Wei, Z., Seger, C. A., Chen, Q., & Peng, Z. (2023) · Journal of Affective Disorders · doi:10.1016/j.jad.2023.02.073 · Cited by 1 · see citing works
Neuropsychological Effects of Antidepressants: Translational Studies
Kamenish, K., & Robinson, E. S. J. (2023) · Current topics in behavioral neurosciences · doi:10.1007/7854_2023_446 · Cited by 1 · see citing works
Tanzer, M., Shahar, G., & Avidan, G. (2014)
Callahan, B. L. (2014) · Corpus Université Laval (Université Laval)
Neural Circuits and Electroencephalography-Based Neurobiology for Depression
Malik, A. S., & Mumtaz, W. (2019) · Elsevier eBooks · doi:10.1016/b978-0-12-817420-3.00006-0
Late-Life Anxiety and Comorbid Depression
Bower, E. S., & Wetherell, J. L. (2021) · Cambridge University Press eBooks · doi:10.1017/9781139087469.007
Current awareness in geriatric psychiatry
(2007) · International Journal of Geriatric Psychiatry · doi:10.1002/gps.1633
Morgado, B., Schneider, B., João, A., Sampaio, F., Pinho, L., Fonseca, C., Ferreira, R., & Silva, C. (2024) · Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT)
- Authors
- Broomfield, N. M., Davies, R., MacMahon, K., Ali, F., & Cross, S. M. B.
- Affiliations
- NHS Greater Glasgow and Clyde (GB)
- Corresponding author
- Broomfield, Niall M.
- Venue
- International Journal of Geriatric Psychiatry
- Publisher
- Wiley
- Published
- 2006-11-10
- Volume
- 22
- Issue
- 3
- Pages
- 175-180
- ISSN
- 0885-6230 (ISSN-L)
- 1099-1166
- OpenAlex
- W1967872167
- Cited by
- 49
- References
- 36
- Citations by year
- 2026: 1 · 2024: 2 · 2023: 5 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 1 · 2017: 4 · 2016: 2 · 2015: 1 · 2014: 6 · 2013: 3 · 2012: 1
- FWCI
- 1.69
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Geriatric Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- UEA Digital Repository (University of East Anglia) (submittedVersion)
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Keywords
- attentional bias, geriatric depression, emotional Stroop task, negative words, older adults, cognitive slowing, anxiety comorbidity, dementia, Alzheimer's disease, diagnostic validity, color naming
- MeSH terms
- Affect, Aged, Analysis of Variance, Anxiety, Attention, Color Perception, Dementia, Depression, Female, Humans, Male, Prejudice, Psychiatric Status Rating Scales, Reaction Time, Case-Control Studies
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