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Attention allocation in posttraumatic stress disorder: an eye-tracking study

Published online by Cambridge University Press:  26 February 2021

Amit Lazarov Open the ORCID record for Amit Lazarov [Opens in a new window] ,
Benjamin Suarez-Jimenez ,
Xi Zhu ,
Daniel S. Pine ,
Yair Bar-Haim  and
Yuval Neria
Amit Lazarov*
Affiliation:
School of Psychological, Tel-Aviv University, Tel-Aviv, Israel Department of Psychiatry, Columbia University Irving Medical Center, New York, NY, USA
Benjamin Suarez-Jimenez
Affiliation:
Department of Neuroscience, The Del Monte Institute for Neuroscience, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA Department of Psychiatry, Columbia University Irving Medical Center and New York State Psychiatric Institute, New York, NY, USA
Xi Zhu
Affiliation:
Department of Psychiatry, Columbia University Irving Medical Center and New York State Psychiatric Institute, New York, NY, USA
Daniel S. Pine
Affiliation:
Section on Developmental Affective Neuroscience, National Institute of Mental Health, Bethesda, MD, USA
Yair Bar-Haim
Affiliation:
School of Psychological Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
Yuval Neria
Affiliation:
Department of Psychiatry, Columbia University Irving Medical Center and New York State Psychiatric Institute, New York, NY, USA
*
Author for correspondence: Amit Lazarov, E-mail: amitl76@yahoo.com
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Abstract

Background

Eye-tracking-based attentional research implicates sustained attention to threat in posttraumatic stress disorder (PTSD). However, most of this research employed small stimuli set-sizes, small samples that did not include both trauma-exposed healthy participants and non-trauma-exposed participants, and generally failed to report the reliability of used tasks and attention indices. Here, using an established eye-tracking paradigm, we explore attention processes to different negatively-valenced cues in PTSD while addressing these limitations.

Methods

PTSD patients (n = 37), trauma-exposed healthy controls (TEHC; n = 34), and healthy controls (HC; n = 30) freely viewed three blocks of 30 different matrices of faces, each presented for 6 s. Each block consisted of matrices depicting eight negatively-valenced faces (anger, fear, or sadness) and eight neutral faces. Gaze patterns on negative and neural areas of interest were compared. Internal consistency and test-retest reliability were evaluated for the entire sample and within groups.

Results

The two trauma-exposed groups dwelled longer on negatively-valenced faces over neutral faces, while HC participants showed the opposite pattern. This attentional bias was more prominent in the PTSD than the TEHC group. Similar results emerged for first-fixation dwell time, but with no differences between the two trauma-exposed groups. No group differences emerged for first-fixation latency or location. Internal consistency and 1-week test-retest reliability were adequate, across and within groups.

Conclusions

Sustained attention on negatively-valenced stimuli emerges as a potential target for therapeutic intervention in PTSD designed to divert attention away from negatively-valenced stimuli and toward neutral ones.

Keywords

Attention allocationeye-trackingPTSDreliabilitysustained attentiontrauma-exposure
Type
Original Article
Information
Psychological Medicine , Volume 52 , Issue 15 , November 2022 , pp. 3720 - 3729
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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References

Abend, R., Bajaj, M. A., Matsumoto, C., Yetter, M., Harrewijn, A., Cardinale, E. M., … Pine, D. S. (2020). Converging multi-modal evidence for implicit threat-related bias in pediatric anxiety disorders. Journal of Abnormal Child Psychology, 49, 227–240. doi: 10.1007/s10802-020-00712-w.Google ScholarPubMed
American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Washington, DC: American Psychiatric Publishing.Google Scholar
Armony, J. L., Corbo, V., Clement, M.-H., & Brunei, A. (2005). Amygdala response in patients with acute PTSD to masked and unmasked emotional facial expressions. The American Journal of Psychiatry, 162(10), 1961–1963. doi: 10.1176/appi.ajp.162.10.1961.CrossRefGoogle ScholarPubMed
Armstrong, T., Bilsky, S. A., Zhao, M., & Olatunji, B. O. (2013). Dwelling on potential threat cues: An eye movement marker for combat-related PTSD. Depression and Anxiety, 30(5), 497–502. doi: 10.1002/da.22115.CrossRefGoogle ScholarPubMed
Armstrong, T., & Olatunji, B. O. (2012). Eye tracking of attention in the affective disorders: A meta-analytic review and synthesis. Clinical Psychology Review, 32(8), 704–723. doi: 10.1016/j.cpr.2012.09.004.CrossRefGoogle ScholarPubMed
Badura-Brack, A. S., Naim, R., Ryan, T. J., Levy, O., Abend, R., Khanna, M. M., … Bar-Haim, Y. (2015). Effect of attention training on attention bias variability and PTSD symptoms: Randomized controlled trials in Israeli and U.S. combat veterans. American Journal Psychiatry, 172(12), 1233–1241. doi: 10.1176/appi.ajp.2015.14121578.CrossRefGoogle ScholarPubMed
Bardeen, J. R., & Daniel, T. A. (2017). A longitudinal examination of the role of attentional control in the relationship between posttraumatic stress and threat-related attentional bias: An eye-tracking study. Behaviour Research and Therapy, 99, 67–77. doi: 10.1016/j.brat.2017.09.003.CrossRefGoogle ScholarPubMed
Bardeen, J. R., Daniel, T. A., Gordon, R. D., Hinnant, J. B., & Weathers, F. W. (2020). Individual differences in attentional control explain the differential expression of threat-related attentional bias among those with posttraumatic stress symptomatology and predict symptom maintenance up to one year later. Behaviour Research and Therapy, 133, 103709. doi: 10.1016/j.brat.2020.103709.CrossRefGoogle ScholarPubMed
Bardeen, J. R., & Orcutt, H. K. (2011). Attentional control as a moderator of the relationship between posttraumatic stress symptoms and attentional threat bias. Journal of Anxiety Disorders, 25(8), 1008–1018. doi: 10.1016/j.janxdis.2011.06.009.CrossRefGoogle ScholarPubMed
Bardeen, J. R., Tull, M. T., Daniel, T. A., Evenden, J., & Stevens, E. N. (2016). A preliminary investigation of the time course of attention bias variability in posttraumatic stress disorder: The moderating role of attentional control. Behaviour Change, 33(2), 94–111. doi: 10.1017/bec.2016.5.CrossRefGoogle Scholar
Beevers, C. G., Lee, H. J., Wells, T. T., Ellis, A. J., & Telch, M. J. (2011). Association of predeployment gaze bias for emotion stimuli with later symptoms of PTSD and depression in soldiers deployed in Iraq. American Journal of Psychiatry, 168(7), 735–741. doi: 10.1176/appi.ajp.2011.10091309.CrossRefGoogle ScholarPubMed
Brady, K. T., Killeen, T. K., Brewerton, T., & Lucerini, S. (2000). Comorbidity of psychiatric disorders and posttraumatic stress disorder. The Journal of Clinical Psychiatry, 61(Suppl 7), 22–32.Google ScholarPubMed
Brewin, C. R., & Holmes, E. A. (2003). Psychological theories of posttraumatic stress disorder. Clinical Psychology Review, 23(3), 339–376. doi: 10.1016/S0272-7358(03)00033-3.CrossRefGoogle ScholarPubMed
Bryant, R. A., Harvey, A. G., Gordon, E., & Barry, R. J. (1995). Eye movement and electrodermal responses to threat stimuli in post-traumatic stress disorder. International Journal of Psychophysiology, 20(3), 209–213. doi: 10.1016/0167-8760(95)00036-4.CrossRefGoogle ScholarPubMed
Buckley, T. C., Blanchard, E. B., & Neill, W. T. (2000). Information processing and PTSD: A review of the empirical literature. Clinical Psychology Review, 20(8), 1041–1065. doi: 10.1016/S0272-7358(99)00030-6.CrossRefGoogle ScholarPubMed
Chemtob, C. M., Roitblat, H. L., Hamada, R. S., Carlson, J. G., & Twentyman, C. T. (1988). A cognitive action theory of post-traumatic stress disorder. Journal of Anxiety Disorders, 2(3), 253–275. doi: 10.1016/0887-6185(88)90006-0.CrossRefGoogle Scholar
Chen, N. T., & Clarke, P. J. (2017). Gaze-based assessments of vigilance and avoidance in social anxiety: A review. Current Psychiatry Reports, 19(9), 59. doi: 10.1007/s11920-017-0808-4.CrossRefGoogle ScholarPubMed
Chong, L. J., & Meyer, A. (2020). Psychometric properties of threat-related attentional bias in young children using eye-tracking. Developmental Psychobiology, 00, 1–12. doi: 10.1002/dev.22053.Google Scholar
Dickter, C. L., & Bartholow, B. D. (2007). Racial ingroup and outgroup attention biases revealed by event-related brain potentials. Social Cognitive and Affective Neuroscience, 2(3), 189–198. doi: 10.1093/scan/nsm012.CrossRefGoogle ScholarPubMed
Echiverri, A. M., Jaeger, J. J., Chen, J. A., Moore, S. A., & Zoellner, L. A. (2011). ‘Dwelling in the past’: The role of rumination in the treatment of posttraumatic stress disorder. Cognitive and Behavioral Practice, 18(3), 338–349. doi: 10.1016/j.cbpra.2010.05.008.CrossRefGoogle ScholarPubMed
Ehlers, A., & Clark, D. M. (2000). A cognitive model of posttraumatic stress disorder. Behaviour Research and Therapy, 38(4), 319–345. doi: 10.1016/S0005-7967(99)00123-0.CrossRefGoogle ScholarPubMed
Ehring, T., Frank, S., & Ehlers, A. (2008). The role of rumination and reduced concreteness in the maintenance of posttraumatic stress disorder and depression following trauma. Cognitive Therapy and Research, 32(4), 488–506. doi: 10.1007/s10608-006-9089-7.CrossRefGoogle ScholarPubMed
Faul, F., Erdfelder, E., Lang, A. G., & Buchner, A. (2007). G* Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences. Behavior Research Methods, 39(2), 175–191. doi: 10.3758/bf03193146.CrossRefGoogle ScholarPubMed
Felmingham, K. L., Rennie, C., Manor, B., & Bryant, R. A. (2011). Eye tracking and physiological reactivity to threatening stimuli in posttraumatic stress disorder. Journal of Anxiety Disorders, 25(5), 668–673. doi: 10.1016/j.janxdis.2011.02.010.CrossRefGoogle ScholarPubMed
First, M. B., Williams, J. B. W., Karg, R. S., & Spitzer, R. L.. (2015). Structured clinical interview for DSM-5 – research version (SCID-5 for DSM-5, research version; SCID-5-RV). Arlington, VA: American Psychiatric Association.Google Scholar
Foa, E. B., Steketee, G., & Rothbaum, B. O. (1989). Behavioral/cognitive conceptualizations of post-traumatic stress disorder. Behavior Therapy, 20(2), 155–176. doi: 10.1016/S0005-7894(89)80067-X.CrossRefGoogle Scholar
Fonzo, G. A., Simmons, A. N., Thorp, S. R., Norman, S. B., Paulus, M. P., & Stein, M. B. (2010). Exaggerated and disconnected insular-amygdalar blood oxygenation level-dependent response to threat-related emotional faces in women with intimate-partner violence posttraumatic stress disorder. Biological Psychiatry, 68(5), 433–441. doi: 10.1016/j.biopsych.2010.04.028.CrossRefGoogle ScholarPubMed
Forbes, D., Lockwood, E., Phelps, A., Wade, D., Creamer, M., Bryant, R. A., … O'Donnell, M. (2014). Trauma at the hands of another: Distinguishing PTSD patterns following intimate and nonintimate interpersonal and noninterpersonal trauma in a nationally representative sample. The Journal of Clinical Psychiatry, 75(2), 147–153. doi: 10.4088/JCP.13m08374.CrossRefGoogle Scholar
Garrett, A. S., Carrion, V., Kletter, H., Karchemskiy, A., Weems, C. F., & Reiss, A. (2012). Brain activation to facial expressions in youth with PTSD symptoms. Depression and Anxiety, 29, 449–459.CrossRefGoogle ScholarPubMed
Gober, C. D., Lazarov, A., & Bar-Haim, Y. (2020). From cognitive targets to symptom reduction: Overview of attention and interpretation bias modification research. Evidence-Based Mental Health. doi: 10.1136/ebmental-2020-300216.Google ScholarPubMed
Green, B. L., Goodman, L. A., Krupnick, J. L., Corcoran, C. B., Petty, R. M., Stockton, P., & Stern, N. M. (2000). Outcomes of single versus multiple trauma exposure in a screening sample. Journal of Traumatic Stress, 13(2), 271–286. doi: 10.1023/A:1007758711939.CrossRefGoogle Scholar
Hamilton, M. (1960). A rating scale for depression. Journal of Neurology, Neurosurgery and Psychiatry, 23(1), 56–62. doi: 10.1136/jnnp.23.1.56.CrossRefGoogle ScholarPubMed
Hamilton, M. A. X. (1959). The assessment of anxiety states by rating. British Journal of Medical Psychology, 32(1), 50–55. doi: 10.1111/j.2044-8341.1959.tb00467.x.CrossRefGoogle ScholarPubMed
In-Albon, T., & Schneider, S. (2010). Using eye tracking methodology in children with anxiety disorders. In Hadwin, J. A. & Field, A. P. (Eds.), Information processing biases and anxiety: A developmental perspective (pp. 129–149). Chichester, UK: John Wiley & Sons Ltd.CrossRefGoogle Scholar
Kelley, L. P., Weathers, F. W., McDevitt-Murphy, M. E., Eakin, D. E., & Flood, A. M. (2009). A comparison of PTSD symptom patterns in three types of civilian trauma. Journal of Traumatic Stress, 22(3), 227–235. doi: 10.1002/jts.20406.CrossRefGoogle ScholarPubMed
Kessler, R. C., & Üstün, T. B. (2004). The World Mental Health (WMH) Survey Initiative version of the j (WHO) Composite International Diagnostic Interview (CIDI). International Journal of Methods in Psychiatric Research, 13(2), 93–121. doi: 10.1002/mpr.168.CrossRefGoogle Scholar
Kimble, M. O., Fleming, K., Bandy, C., Kim, J., & Zambetti, A. (2010). Eye tracking and visual attention to threating stimuli in veterans of the Iraq War. Journal of Anxiety Disorders, 24(3), 293–299. doi: 10.1016/j.janxdis.2009.12.006.CrossRefGoogle ScholarPubMed
Kimble, M. O., Fleming, K., & Bennion, K. A. (2013). Contributors to hypervigilance in a military and civilian sample. Journal of Interpersonal Violence, 28(8), 1672–1692. doi: 10.1177/0886260512468319.CrossRefGoogle Scholar
Klawohn, J., Bruchnak, A., Burani, K., Meyer, A., Lazarov, A., Bar-Haim, Y., & Hajcak, G. (2020). Aberrant attentional bias to sad faces in depression and the role of stressful life events: Evidence from an eye-tracking paradigm. Behaviour Research and Therapy, 135, 103762. doi: 10.1016/j.brat.2020.103762.CrossRefGoogle ScholarPubMed
Lazarov, A., Abend, R., & Bar-Haim, Y. (2016). Social anxiety is related to increased dwell time on socially threatening faces. Journal of Affective Disorders, 193, 282–288. doi: 10.1016/j.jad.2016.01.007.CrossRefGoogle ScholarPubMed
Lazarov, A., Ben-Zion, Z., Shamai, D., Pine, D. S., & Bar-Haim, Y. (2018). Free viewing of sad and happy faces in depression: A potential target for attention bias modification. Journal of Affective Disorders, 238, 94–100. doi: 10.1016/j.jad.2018.05.047.CrossRefGoogle ScholarPubMed
Lazarov, A., Pine, D. S., & Bar-Haim, Y. (2017). Gaze-contingent music reward therapy for social anxiety disorder: A randomized controlled trial. American Journal of Psychiatry, 174(7), 649–656. doi: 10.1176/appi.ajp.2016.16080894.CrossRefGoogle ScholarPubMed
Lazarov, A., Suarez-Jimenez, B., Tamman, A., Falzon, L., Zhu, X., Edmondson, D. E., & Neria, Y. (2019). Attention to threat in posttraumatic stress disorder as indexed by eye-tracking indices: A systematic review. Psychological Medicine, 49(5), 705–726. doi: 10.1017/S0033291718002313.CrossRefGoogle ScholarPubMed
Lee, J. H., & Lee, J. H. (2012). Attentional bias to violent images in survivors of dating violence. Cognition and Emotion, 26(6), 1124–1133. doi: 10.1080/02699931.2011.638906.CrossRefGoogle ScholarPubMed
Lee, J. H., & Lee, J. H. (2014). Attentional bias towards emotional facial expressions in survivors of dating violence. Cognition and Emotion, 28(6), 1127–1136. doi: 10.1080/02699931.2013.867834.CrossRefGoogle ScholarPubMed
Lilienfeld, S. O., & Strother, A. N. (2020). Psychological measurement and the replication crisis: Four sacred cows. Canadian Psychology/Psychologie Canadienne, 61(4), 281–288. doi: 10.1037/cap0000236.CrossRefGoogle Scholar
Litz, B. T., & Keane, T. M. (1989). Information processing in anxiety disorders: Application to the understanding of post-traumatic stress disorder. Clinical Psychology Review, 9(2), 243–257. doi: 10.1016/0272-7358(89)90030-5.CrossRefGoogle Scholar
Lundqvist, D., Flykt, A., & Öhman, A. (1998). The Karolinska directed emotional faces (KDEF). CD ROM from Department of Clinical Neuroscience, Psychology section, Karolinska Institutet, 91(630), 2–2.Google Scholar
Matlow, R. B. (2013). Attentional processes associated with victimization history and posttraumatic symptomatology in women exposed to intimate partner violence. Doctoral dissertation, University of Denver.Google Scholar
Mekawi, Y., Murphy, L., Munoz, A., Briscione, M., Tone, E. B., Norrholm, S. D., … Powers, A. (2020). The role of negative affect in the association between attention bias to threat and posttraumatic stress: An eye-tracking study. Psychiatry Research, 284, 112674. doi: 10.1016/j.psychres.2019.112674.CrossRefGoogle ScholarPubMed
Michael, T., Halligan, S. L., Clark, D. M., & Ehlers, A. (2007). Rumination in posttraumatic stress disorder. Depression and Anxiety, 24(5), 307–317. doi: 10.1002/da.20228.CrossRefGoogle ScholarPubMed
Mulckhuyse, M., Crombez, G., & Van der Stigchel, S. (2013). Conditioned fear modulates visual selection. Emotion (Washington, D.C.), 13(3), 529–536. doi: 10.1037/a0031076.CrossRefGoogle ScholarPubMed
Nissens, T., Failing, M., & Theeuwes, J. (2017). People look at the object they fear: Oculomotor capture by stimuli that signal threat. Cognition & Emotion, 31(8), 1707–1714. doi: 10.1080/02699931.2016.1248905.CrossRefGoogle Scholar
Powers, A., Fani, N., Murphy, L., Briscione, M., Bradley, B., Tone, E. B., … Jovanovic, T. (2019). Attention bias toward threatening faces in women with PTSD: Eye tracking correlates by symptom cluster. European Journal of Psychotraumatology, 10, 1. doi: 10.1080/20008198.2019.1568133.CrossRefGoogle ScholarPubMed
Preciado, D., Munneke, J., & Theeuwes, J. (2017). Was that a threat? Attentional biases by signals of threat. Emotion (Washington, D.C.), 17(3), 478–486. doi: 10.1037/emo0000246.CrossRefGoogle ScholarPubMed
Rauch, S. L., Whalen, P. J., Shin, L. M., McInerney, S. C., Macklin, M. L., Lasko, N. B., … Pitman, R. K. (2000). Exaggerated amygdala response to masked facial stimuli in posttraumatic stress disorder: A functional MRI study. Biological Psychiatry, 47(9), 769–776. doi: 10.1016/S0006-3223(00)00828-3.CrossRefGoogle ScholarPubMed
Richards, H. J., Benson, V., Donnelly, N., & Hadwin, J. A. (2014). Exploring the function of selective attention and hypervigilance for threat in anxiety. Clinical Psychology Review, 34(1), 1–13. doi: 10.1016/j.cpr.2013.10.006.CrossRefGoogle ScholarPubMed
Rodebaugh, T. L., Scullin, R. B., Langer, J. K., Dixon, D. J., Huppert, J. D., Bernstein, A., … Lenze, E. J. (2016). Unreliability as a threat to understanding psychopathology: The cautionary tale of attentional bias. Journal of Abnormal Psychology, 125(6), 840–851. doi: 10.1037/abn0000184.CrossRefGoogle ScholarPubMed
Schmidt, L. J., Belopolsky, A. V., & Theeuwes, J. (2015). Attentional capture by signals of threat. Cognition and Emotion, 29(4), 687–694. doi: 10.1080/02699931.2014.924484.CrossRefGoogle ScholarPubMed
Sears, C., Quigley, L., Fernandez, A., Newman, K., & Dobson, K. (2019). The reliability of attentional biases for emotional images measured using a free-viewing eye-tracking paradigm. Behavior Research Methods, 51(6), 2748–2760. doi: 10.3758/s13428-018-1147-z.CrossRefGoogle ScholarPubMed
Shamai-Leshem, D., Lazarov, A., Pine, D. S., & Bar-Haim, Y. (2020). A randomized controlled trial of gaze-contingent music reward therapy for major depressive disorder. Depression and Anxiety, 38, 134–145. doi:10.1002/da.23089.CrossRefGoogle ScholarPubMed
Skinner, I. W., Hubscher, M., Moseley, G. L., Lee, H., Wand, B. M., Traeger, A. C., … McAuley, J. H. (2017). The reliability of eyetracking to assess attentional bias to threatening words in healthy individuals. Behavior Research Methods, 50(5), 1778–1792. doi: 10.3758/s13428-017-0946-y.CrossRefGoogle Scholar
Soleymani, A., Ivanov, Y., Mathot, S., & de Jong, P. J. (2020). Free-viewing multi-stimulus eye tracking task to index attention bias for alcohol versus soda cues: Satisfactory reliability and criterion validity. Addictive Behaviors, 100, 106117. doi: 10.1016/j.addbeh.2019.106117.CrossRefGoogle ScholarPubMed
Suslow, T., Hußlack, A., Kersting, A., & Bodenschatz, C. M. (2020). Attentional biases to emotional information in clinical depression: A systematic and meta-analytic review of eye tracking findings. Journal of Affective Disorders, 274, 632–642. doi: 10.1016/j.jad.2020.05.140.CrossRefGoogle ScholarPubMed
Thomas, C. L., Goegan, L. D., Newman, K. R., Arndt, J. E., & Sears, C. R. (2013). Attention to threat images in individuals with clinical and subthreshold symptoms of post-traumatic stress disorder. Journal of Anxiety Disorders, 27(5), 447–455. doi: 10.1016/j.janxdis.2013.05.005.CrossRefGoogle ScholarPubMed
Waechter, S., Nelson, A. L., Wright, C., Hyatt, A., & Oakman, J. (2014). Measuring attentional bias to threat: Reliability of dot probe and eye movement indices. Cognitive Therapy and Research, 38(3), 313–333. doi: 10.1007/s10608-013-9588-2.CrossRefGoogle Scholar
Wald, I., Degnan, K. A., Gorodetsky, E., Charney, D. S., Fox, N. A., Fruchter, E., … Bar-Haim, Y. (2013). Attention to threats and combat-related posttraumatic stress symptoms: Prospective associations and moderation by the serotonin transporter gene. JAMA Psychiatry, 70(4), 401–409. doi: 10.1001/2013.jamapsychiatry.188.CrossRefGoogle ScholarPubMed
Wald, I., Shechner, T., Bitton, S., Holoshitz, Y., Charney, D. S., Muller, D., … Bar-Haim, Y. (2011). Attention bias away from threat during life threatening danger predicts PTSD symptoms at one-year follow-up. Depression and Anxiety, 28(5), 406–411. doi: 10.1002/da.20808.CrossRefGoogle ScholarPubMed
Weathers, F. W., Blake, D. D., Schnurr, P. P., Kaloupek, D. G., Marx, B. P., & Keane, T. M. (2013a). The clinician administered PTSD scale for DSM-5 (CAPS-5) [Assessment]. Retrieved from http://www.ptsd.va.gov.Google Scholar
Weathers, F. W., Blake, D. D., Schnurr, P. P., Kaloupek, D. G., Marx, B. P., & Keane, T. M. (2013b). The Life Events Checklist for DSM-5 (LEC-5). Retrieved from http://www.ptsd.va.gov.Google Scholar
Wermes, R., Lincoln, T. M., & Helbig-Lang, S. (2017). How well can we measure visual attention? Psychometric properties of manual response times and first fixation latencies in a visual search paradigm. Cognitive Therapy and Research, 41(4), 588–599. doi: 10.1007/s10608-016-9830-9.CrossRefGoogle Scholar
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