Impact of childhood trauma, alexithymia, dissociation, and emotion suppression on emotional Stroop task Wingenfeld et al 2011

Introduction

  • Key Points:

    • Importance of attentional bias to emotion- and illness-related information in mental disorders, especially major depressive and anxiety disorders.

    • Utilization of emotional Stroop task to analyze the effects of traumatic experiences and emotion regulation on cognitive processing.

Objectives of the Study

  • Aim: To investigate how childhood trauma, alexithymia, dissociation, and emotion suppression affect reaction times and interference in the emotional Stroop test.

  • Methodology Overview:

    • Involved psychosomatic inpatients and healthy controls (82 patients, 39 controls).

    • Recruitment and assessment based on DSM-IV diagnoses using structured clinical interviews.

    • Various questionnaires were utilized to evaluate emotional experiences and psychopathology.

Method

  • Participants:

    • 82 inpatients with anxiety disorders, depressive disorders, or somatoform disorders.

    • 39 healthy controls (with exclusion of those meeting mental disorder criteria).

  • Assessment Tools:

    • Childhood Trauma Questionnaire (CTQ): Assessed childhood trauma experiences (Cronbach's α≥.89).

    • Hospital Anxiety and Depression Scale (HADS): Assessed levels of anxiety and depression.

    • Freiburger Beschwerdeliste-Revised (FBL): Measured bodily symptoms (Cronbach's α=.95).

    • Dissociative Experiences Scale-Taxon: Assessed pathological dissociation (Cronbach's α=.76).

    • Toronto Alexithymia Scale (TAS-20): Measured alexithymia (Cronbach's α=.78).

    • Emotion Regulation Questionnaire (ERQ): Evaluated tendencies to suppress emotions (Cronbach's α=.73).

  • Stroop Task Design:

    • Included 192 words: neutral, negative, anxiety-related, depression-related, words about bodily symptoms, and individually chosen words reflecting participant issues.

    • Reaction times and mean interference calculated to analyze emotional processing.

Results

  • Main Findings:

    • Childhood trauma was a significant predictor for reaction times across word types.

    • Emotion suppression predicted interference particularly for negative, anxiety-related, and individually relevant words.

    • Psychopathology measurements (e.g., anxiety, depression) showed no association with Stroop performance when variables were analyzed simultaneously.

  • Comparison of Groups:

    • Examination of self-report scores of controls vs. diagnosed patients revealed significant differences.

    • Reaction times showed high internal consistency across word categories, confirming the reliability of the methodology.

Discussion

  • Conclusions:

    • Childhood trauma plays a critical role in influencing cognitive performance in adults.

    • Emotion suppression has implications for attentional bias and cognitive task performance.

    • The findings challenge previous assumptions regarding the role of affective symptoms in cognitive interference during the Stroop task.

  • Implications for Future Research:

    • Need for studies incorporating different methodologies to further explore the intricacies of emotional processing.

    • Further examination of emotion regulation strategies and their relationship with attentional bias in clinical populations.

Limitations

  • High comorbidity rates among participants may limit the generalizability of results.

  • Absence of assessments for current PTSD and reliance on self-report measures for childhood trauma and alexithymia may skew findings.

Appendix

  • Words used in the Stroop task:

    • Neutral: View, Window, Cloudy, Short

    • Negative: Murder, Betrayal, Envious, Stingy

    • Depression: Worthless, Sluggish, Gloom, Depression

    • Anxiety: Fearful, Anxiety, Panic, Attack

    • Somatization: Painful, Body, Doctor