Kevin D. Wu’s research while affiliated with Northern Illinois University and other places

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Publications (43)


Factor Structure and Measurement Invariance of the Penn Inventory of Scrupulosity-Revised (PIOS-R) Across Christian, Jewish, and Muslim Groups
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December 2024

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7 Reads

Journal of Obsessive-Compulsive and Related Disorders

Fiona C. Ball

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Anna M. White

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Kevin D. Wu

Goodness-of-Fit Statistics for the Penn State Worry Questionnaire.
Standardized Factor Loadings From Penn State Worry Questionnaire.
Goodness-of-Fit Statistics for Measurement Invariance Analyses.
I am Worried: Do the PSWQ and PSWQ-A Display Measurement Invariance Across Four Racial Groups?
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  • Full-text available

September 2022

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34 Reads

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3 Citations

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Katie H. Mangen

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[...]

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Kevin D. Wu

The issue of race within the context of psychological assessment is important, but often overlooked. Many self-report measures of psychopathology have been developed and validated using primarily White samples. Research regarding the Penn State Worry Questionnaire (PSWQ) and race has produced mixed results, which in turn may present challenges when comparing scores across racial groups. The current article sought to investigate the measurement invariance of the PSWQ and PSWQ-A (an abbreviated version) across four racial groups (White, Black, Asian, and Hispanic) in a sample of 2,489 undergraduate students. Confirmatory factor analysis of a one-factor structure illustrated poor fit across all racial groups for the full-length PSWQ. Two-factor and one-factor with method effects models of the full-length PSWQ each improved on the previous model fit, although the one-factor method effects model was limited by nonsalient factor loadings. Additionally, a separate confirmatory factor analysis indicated good fit for the PSWQ-A. Further analysis of the PSWQ-A suggested measurement invariance across all racial groups, as well as configural, metric, and scalar invariance. These findings advance the literature on the relationship between worry and race, suggesting that direct comparisons on the PSWQ-A between racial groups is appropriate.

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An examination of the sentence task through in-person and online administrations

November 2021

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13 Reads

Journal of Obsessive-Compulsive and Related Disorders

The Sentence Task (Rachman et al., 1996) has respondents write “I hope ___ is in a car accident,” filling the blank with a loved one. Used in many laboratory-based studies of Thought-Action Fusion (TAF), it is unclear whether the induced distress is TAF-specific. Four studies (total N = 405 undergraduates) examined the extent to which Task-induced anxiety is empirically correlated with conceptually relevant self-report measures. We also explored using the Task in an online format; two studies were in-person, two were online. First, completion of the Task resulted in significant (ps < .001) increase in anxiety in all four studies (ds ranged from 0.52 to 0.86). However, in three of the four studies, there was no significant correlation (ps > .05) between the magnitude of pre-to post-Task anxiety change and baseline measures (Thought-Action Fusion Scale, Dimensional Obsessive-Compulsive Scale). This suggests that the Task-induced anxiety may not be specific to TAF. Second, there were no significant mean-level differences for any variables whether assessed in-person vs. online. However, Task refusal was significantly higher for online (21.2%, 24.1%) vs. in-person (5.4%, 6.0%) administrations. Findings contribute to a better understanding of the Task and offer mixed support for use in an online format.


Examining the relationship between religion and thought-action fusion in a Protestant sample

October 2020

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30 Reads

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1 Citation

Journal of Obsessive-Compulsive and Related Disorders

Research has established that individuals who belong to different religious affiliations may differ on levels of thought-action fusion (TAF), a cognitive bias heavily implicated in obsessive-compulsive symptoms. However, research has relied on correlational methods and comparisons primarily have been between broad religious groups and not targeted aspects of religious beliefs or teachings. In our study, 99 Protestant undergraduates were randomly assigned to one of two priming conditions: reading and writing about a forgiving or a punishing God. Participants then completed a behavioral TAF task that induces an obsession-like thought, after which in vivo responses were measured. Comparisons between the forgiving God (FG) and punishing God (PG) conditions revealed that those in the PG condition were higher on in vivo anxiety and urge to neutralize. However, there were no differences on in vivo moral wrongness ratings or on neutralizing behavior. Findings provided mixed support for the salience of a punishing God concept as an influence on elevated TAF in Protestant individuals. The study was limited by a sample with a strong baseline view of God as forgiving, which likely limited the effectiveness of the God concept prime. Other limitations and observations are addressed to inform the methodology of future research.


Factor Structure and Further Validation of the 20-Item Short Form of the Obsessive Beliefs Questionnaire

September 2019

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119 Reads

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10 Citations

A 44-item version of the Obsessive Beliefs Questionnaire (OBQ-44) put forward by the Obsessive Compulsive Cognitions Working Group remains the most widely used version of the OBQ, despite research casting doubt on its factorial validity and the existence of a short form (i.e., OBQ-20). In a large sample of undergraduate students (n = 1,210), a bifactor model of the OBQ-20, consisting of a general factor and four specific factors (threat, responsibility, importance/control of thoughts, perfectionism/certainty), was supported as the best-fitting model. None of the examined OBQ-44 models provided adequate fit. The bifactor model of the OBQ-20 was retained in two independent samples (n = 1,342 community adults, n = 319 undergraduate students). The incremental validity of the specific factors of the OBQ-20 beyond the general factor was evidenced across multiple criterion indices, including obsessive–compulsive symptom measures and reactions to a thought-induction task. Results further support use of the OBQ-20.


Facets of experiential avoidance differentially predict engagement in a contamination-based behavioral approach task

July 2019

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42 Reads

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7 Citations

Journal of Obsessive-Compulsive and Related Disorders

Experiential Avoidance (EA) is an unwillingness to experience or remain in contact with unpleasant emotions, thoughts, bodily sensations, or other private experiences (Hayes, Wilson, Gifford, Follette, & Strosahl, 1996). Previous research has found a relationship between EA and Obsessive-Compulsive Disorder (OCD; Twohig, Hayes, & Masuda, 2006a). The current study examined relations among multiple EA facets, contamination concerns, and anxiety, disgust, and engagement during a contamination-relevant behavioral approach task (BAT). Of particular interest was whether any specific EA facets would emerge as predictive of task engagement after controlling for baseline contamination concerns. Results were that Distraction/Suppression, Repression/Denial, and Procrastination significantly predicted task engagement. Although Behavioral Avoidance was correlated with anxiety, disgust, and engagement at the zero-order level, it did not predict task engagement after controlling for baseline contamination concerns. These distinct correlates highlight the importance of measuring EA at the facet level rather than as a unitary construct. Specific EA facets may interfere with engagement in BATs—and by extension, exposure-based treatment efforts—to a greater extent than others. Augmentations aimed at decreasing the use of distraction and suppression may improve treatment response in the context of exposure-based treatment for OCD.


Feelings of incompleteness explain symptoms of OCD and OCPD beyond harm avoidance

April 2019

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202 Reads

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12 Citations

Journal of Obsessive-Compulsive and Related Disorders

Traditional models of Obsessive-Compulsive Disorder (OCD) suggest that neutralizing behaviors are motivated by harm avoidance. However, some individuals with OCD report an experience of discomfort, rather than anxiety per se, as motivating their behavior. Incompleteness has been proposed as another potential motivator of compulsive behaviors. We examined the relative strength of harm avoidance and incompleteness in predicting OCD symptom dimensions in a nonclinical sample (n = 238). We also examined the relationship between incompleteness and symptoms of two conditions with phenotypic similarity to OCD—Obsessive-Compulsive Personality Disorder (OCPD) and Autism Spectrum Disorder (ASD). Each involves patterns of repetitive, rigid behavior. Hierarchical regressions returned that incompleteness significantly predicted OCD and OCPD symptoms after controlling for harm avoidance; in some cases, the magnitude of association was stronger for incompleteness than for harm avoidance. We suggest that a better understanding of incompleteness may help to advance conceptualization of OCD and other symptoms.


Development and Validation of the Faceted Inventory of the Five-Factor Model (FI-FFM)

January 2019

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402 Reads

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92 Citations

The Faceted Inventory of the Five-Factor Model (FI-FFM) is a comprehensive hierarchical measure of personality. The FI-FFM was created across five phases of scale development. It includes five facets apiece for neuroticism, extraversion, and conscientiousness; four facets within agreeableness; and three facets for openness. We present reliability and validity data obtained from three samples. The FI-FFM scales are internally consistent and highly stable over 2 weeks (retest rs ranged from .64 to .82, median r = .77). They show strong convergent and discriminant validity vis-à-vis the NEO, the Big Five Inventory, and the Personality Inventory for DSM-5. Moreover, self-ratings on the scales show moderate to strong agreement with corresponding ratings made by informants (rs ranged from .26 to .66, median r = .42). Finally, in joint analyses with the NEO Personality Inventory–3, the FI-FFM neuroticism facet scales display significant incremental validity in predicting indicators of internalizing psychopathology.


Integrating Treatments for HD and PTSD: A Clinical Report

August 2018

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35 Reads

Clinical Case Studies

This report details the course of psychotherapy methods and outcomes for a 57-year-old White man who sought services for hoarding disorder (HD) and posttraumatic stress disorder (PTSD). Over 14 months, he completed 54 treatment sessions that spanned two distinct treatment approaches. Given his presentation and the conceptualized relations among his symptoms, therapy was sequenced to address PTSD symptoms prior to undergoing cognitive–behavioral therapy (CBT) for HD. The implications of this decision were key to his treatment progress and outcome, and they are reviewed in detail. Together, treatment consisted of psycho-education, cognitive restructuring, and a combination of in-clinic and home-based exposures. Results were positive, with the client experiencing a decrease in self-reported HD and PTSD symptoms, reduction in home clutter and decreased distress related to discarding, and increased feelings of self-efficacy. In light of limited data addressing treatment for individuals with HD who have a salient trauma history, the major aim of this report is to detail how each step of the client’s treatment was approached, what factors and data were considered for reaching specific decision points, and how the sequencing of treatment is believed to have contributed to the positive outcome achieved.


Moderating role of brooding thinking patterns. The figure depicts the moderating effect of RRS Brooding on the relationship between mindfulness condition on distress reduction measured with Positive and Negative Affect Schedule Negative Affect. RRS Ruminative Responses Scale; Brood Brooding subscale; FA focused attention; OM open monitoring. Brooding groups determined by ± 1 SD on the mean of the Brooding subscale
The Moderating Effects of Rumination Facets on the Relationship Between Mindfulness and Distress Reduction

August 2018

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125 Reads

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16 Citations

Cognitive Therapy and Research

Mindfulness-based interventions have many applications, including as a productive alternative to repetitive thoughts. Rumination includes two factors: brooding (moody, maladaptive thinking) and reflection (adaptive attempt to overcome problems). Literature suggests mindfulness interventions reduce ruminative thoughts, but technique effectiveness requires examination. Our study assessed whether mindfulness techniques differ with respect to distress reduction in the context of brooding versus reflective styles. Students (N = 228) completed questionnaires, negative mood manipulation, and a one-session mindfulness training that required either focused attention or open monitoring. Induced distress was reduced in both conditions, but brooding moderated the relationship between condition and distress reduction. Reflection was not a moderator. The findings support the idea that even a modest dose of mindfulness exercise aids in reducing induced negative emotions. Focused mindfulness may be more beneficial for reducing distress in individuals who report high levels of brooding, whereas either technique may reduce distress in individuals who reflect.


Citations (39)


... The PSWQ-A has been shown to effectively differentiate between individuals with clinical anxiety and non-clinical controls. 11 For this study, a validated cutoff of ≥ 22 was used to define clinically significant anxiety symptoms. 7 The Mild Behavioral Impairment Checklist (MBI-C) (www.mbitest.org) is a recently developed tool designed to assess and quantify behavioral changes in older adults at risk for dementia. ...

Reference:

Correlation of Depression and Anxiety Responses on the Mild Behavioral Impairment Checklist With the Cornell Scale for Depression in Dementia and Abbreviated Version of the Penn State Worry Questionnaire
I am Worried: Do the PSWQ and PSWQ-A Display Measurement Invariance Across Four Racial Groups?

... Two recent studies (DeBono et al., 2017;Younce & Wu, 2020) conducted experiments in which participants were instructed to read Bible verses to prime punitive or forgiving God. However, neither of these studies empirically validated their primes prior to conducting their studies. ...

Examining the relationship between religion and thought-action fusion in a Protestant sample
  • Citing Article
  • October 2020

Journal of Obsessive-Compulsive and Related Disorders

... Each dimension represents a distinct behavioral aspect of avoiding distressing experiences. Previous research has consistently demonstrated that MEAQ showed better discriminant validity and reliability than the AAQ-II [18][19][20]. The multidimensional assessment of EA can help identify potential associations between different facets of EA and various types of psychopathology [21]. ...

Facets of experiential avoidance differentially predict engagement in a contamination-based behavioral approach task
  • Citing Article
  • July 2019

Journal of Obsessive-Compulsive and Related Disorders

... The presence of areas associated with these traits in the reported significant components highlights a possible unique relationship between OCPD and harm avoidance. This connection is supported by previous studies (Lee and Wu, 2019;Ettelt et al., 2008;Samuels et al., 2000), which suggest a link between this trait and both OCPD and OCD. In contrast, regarding novelty seeking, no other relevant studies, to our knowledge, have identified a specific relationship with OCPD. ...

Feelings of incompleteness explain symptoms of OCD and OCPD beyond harm avoidance
  • Citing Article
  • April 2019

Journal of Obsessive-Compulsive and Related Disorders

... When the literature is examined, studies are found that support the relationship between OCD symptom level, obsessive beliefs, and inferential confusion seen in the current study (Aardema et al., 2018;Baraby et al., 2021;Baraby et al., 2023). ...

The relationship of inferential confusion and obsessive beliefs with specific obsessive-compulsive symptoms

Journal of Obsessive-Compulsive and Related Disorders

... One study revealed that a single use of a webbased mindfulness exercise yielded a significantly increased postintervention mindfulness state in the mindfulness condition, and not in the passive control group (13). Moreover, one-time mindfulness exercises are reportedly effective for reducing induced distress (14), perceived stress, preservative thinking, symptoms of depression, and anxiety, all with small-to-medium effect sizes (15). A meta-analysis by Schumer et al. (16) revealed that a mindfulness practice influenced affect in a manner that did not depend on the intervention's duration, but these results are based on adult samples. ...

The Moderating Effects of Rumination Facets on the Relationship Between Mindfulness and Distress Reduction

Cognitive Therapy and Research

... However, not all patients report an elevation in these cognitions (Taylor et al., 2006), and changes in the OBQ do not necessarily precede symptom change (Lorenzo-Luaces et al., 2016). OBQ is also available in shorter forms (Moulding et al., 2011;Fergus et al., 2019). ...

Factor Structure and Further Validation of the 20-Item Short Form of the Obsessive Beliefs Questionnaire

... In a sample of healthy participants, the IMP-WSAP training enhanced a healthy bias favoring benign interpretations, however, it did not attenuate emotional vulnerability during a stressful task. Also, Conley and Wu (2018) examined the effectiveness of the IMP-WSAP training in the context of OCD by combining, for example, the word "disease" with "You visit someone who is ill" (Conley & Wu, 2018, p. 58). Participants with elevated contamination concerns who completed the training, compared to a control condition, showed a decrease in interpretation biases for threat cues and when ceiling effects were accounted for, completed more steps when approaching contaminants in a behavioral approach task. ...

Experimental modification of dysfunctional interpretations in individuals with contamination concerns
  • Citing Article
  • November 2017

Journal of Behavior Therapy and Experimental Psychiatry

... To the best of our knowledge, our study is the first exploration of the nexus between self-compassion and intolerance of (Kaçar-Başaran & Arkar, 2023). The tendency to interpret uncertainty in a negative, distorted or perilous manner propels individuals towards efforts to mitigate uncertainty, thereby reinforcing the rigid obsessive beliefs closely associated with the OCD symptomatology (Faleer et al., 2017;Gentes & Ruscio, 2011;OCCWG, 1997;Tolin et al., 2003b). This aligns seamlessly with the insights put forward in the previous study by Pinciotti et al. (2021), who highlighted the predictive power of IoU in various OCD symptom clusters. ...

Examination of an experimental manipulation of intolerance of uncertainty on obsessive-compulsive outcomes
  • Citing Article
  • July 2017

Journal of Obsessive-Compulsive and Related Disorders

... While the majority of the individuals participating in the study were university students (66.3%), individuals from different occupational groups (such as lawyers, physiotherapists, engineers, and psychologists) also participated in the study. Watson et al. (2017) and adapted to the Turkish language by Bulut & Yildiz (2018). It consists of 131 items and 5 factors (neuroticism-31 items; extraversion-26 items; agreeableness-20; conscientiousness-37 items and openness to experience-17 items). ...

Development and Validation of the Faceted Inventory of the Five-Factor Model (FI-FFM)