Samaneh Khazaei’s research while affiliated with University of Birjand and other places

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Publications (3)


Fig. 1 Scree plot for the number of factors
Demographic characteristics and mean of PIES in study samples
Validation of perceived invalidation of emotion scale (PIES) in Iranian populations
  • Article
  • Full-text available

December 2024

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27 Reads

Discover Psychology

Mehdi Rezaei

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Zahra Paripishbar

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Samaneh Khazaei

Background The examination of the psychometric properties of the PIES in Eastern cultures has remained unexplored. The current study aims to explore the psychometric features of the PIES in Iranian populations. Methods A total of 2250 participants (clinical sample = 177, student samples = 1762, general population = 311) completed the following questionnaires: Perceived Invalidation of Emotion Scale (PIES), Childhood Trauma Questionnaire-Short form (CTQ-SF), Depression, Anxiety and Stress (DASS-2), and the Difficulties in Emotion Regulation Scale-16 (DERS-16). The psychometric qualities of the PIES were examined using construct, convergent, discriminant, incremental, and predictive validities together with internal consistency and test–retest reliability. Results The results of exploratory and confirmatory factor analysis revealed that the PIES had a unifactorial structure. Support was found for internal consistency as well as for test–retest reliability. In addition, the PIES scores significantly predicted emotional distress over time and had positive correlations with emotional dysregulation, childhood traumas, anxiety, stress, and depression. The PIES was also found to discriminate the clinical from nonclinical populations. Finally, PIES demonstrated adequate incremental validity. Conclusion Despite the limitations of the current study and the need for additional research, the findings indicate that the PIES with unifactorial structure is a reliable and valid scale among Iranian populations.

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Measuring emotional invalidation in Iranian populations: Persian version of perceived invalidation of emotion scale (P_PIES)

October 2024

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56 Reads

The examination of the psychometric properties of the PIES in Eastern cultures has remained unexplored. The current study aims to explore the psychometric features of the PIES in Iranian populations. A total of 2250 participants (clinical sample = 177, student samples = 1762, general population = 311) completed the following questionnaires: Perceived Invalidation of Emotion Scale (PIES), Childhood Trauma Questionnaire-Short form (CTQ-SF), Depression, Anxiety and Stress (DASS-2), and the Difficulties in Emotion Regulation Scale-16 (DERS-16). The psychometric qualities of the PIES were examined using construct, convergent, discriminant, incremental, and predictive validities together with internal consistency and test-retest reliability. The results of exploratory and confirmatory factor analysis revealed that the PIES had a unifactorial structure. Support was found for internal consistency as well as for test-retest reliability. In addition, the PIES scores significantly predicted emotional distress over time and had positive correlations with emotional dysregulation, childhood traumas, anxiety, stress, and depression. The PIES was also found to discriminate the clinical from nonclinical populations. Finally, PIES demonstrated adequate incremental validity. Despite the limitations of the current study and the need for additional research, the findings indicate that the PIES with unifactorial structure is a reliable and valid scale among Iranian populations.


tDCS efficacy and utility of anhedonia and rumination as clinical predictors of response to tDCS in major depressive disorder (MDD)

July 2023

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26 Reads

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4 Citations

Journal of Affective Disorders

Background: Anhedonia and rumination are mental disorders' transdiagnostic features but remain difficult to treat. Transcranial direct current stimulation (tDCS) is a proven treatment for depression, but its effects on anhedonia and rumination and whether anhedonia and rumination can be used as a predictive biomarker of treatment response is not well known. This study aimed to investigate the tDCS efficacy and identify the predictive role of anhedonia and rumination in response to tDCS in patients with MDD. Methods: 182 patients received 10 tDCS sessions delivered at 2 mA to left (anode) dorsolateral prefrontal cortex (DLPFC). Hamilton Rating Scale for Depression (HRSD-17), Snaith-Hamilton Pleasure Scale (SHAPS), and the 10-item Ruminative Response Scale (RRS-10) was administered to patients with MDD before treatment, following it, and after two weeks of tDCS. Results: There was an overall significant improvement in anhedonia from pre- to post-treatment. Regression analyses revealed that responders had higher baseline anhedonia and rumination (reflective pondering) scores. We found that the reduction in HRSD scores after tDCS was significantly associated with anhedonia's baseline values while no relation was found between baseline rumination and tDCS treatment response. Conclusion: These results provide new evidence that pronounced anhedonia may be a significant clinical predictor of response to tDCS. Patients with severe or low baseline rumination had an equal chance of achieving clinical response. Prospective tDCS studies are necessary to validate the predictive value of the derived model.

Citations (1)


... I 2 = 61.64. Krepel et al., 2020;Lazary et al., 2021;Rezaei et al., 2023;Russo et al., 2018;Wang et al., 2021;Zhu et al., 2022), and one concerned both clinical groups (Bodén et al., 2021). Three studies on patients with depression combined NIBS with medications or psychological interventions (Krepel et al., 2020;Russo et al., 2018;Zhu et al., 2022), and another study recruited patients with bipolar depression (Diederichs et al., 2021). ...

Reference:

The effect of noninvasive brain stimulation on anhedonia in patients with schizophrenia and depression: A systematic review and meta‐analysis
tDCS efficacy and utility of anhedonia and rumination as clinical predictors of response to tDCS in major depressive disorder (MDD)
  • Citing Article
  • July 2023

Journal of Affective Disorders