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Peterson R, Dvorak RD, Burr EK, De Leon AN, Klaver SJ, Maynard MH, Hayden ER, Aguilar B. Revised Alcohol Protective Behavioral Strategies Scale-20 (PBSS-20) Sub-Types: An Analysis of Direct/Controlled Consumption and Indirect/Harm Reduction PBS. J Drug Educ 2024:472379241246367. [PMID: 38591951 DOI: 10.1177/00472379241246367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Alcohol protective behavioral strategies (PBS) are commonly conceptualized with a three-factor model, as used in the Protective Behavioral Strategies Scale-20 (PBSS-20). However, inconsistencies exist between factors and drinking outcomes. The current study used factor analysis to test a two-factor structure directly via controlled consumption (Direct/CC) and indirectly via harm reduction (Indirect/HR) using the PBSS-20 among a combined sample of n = 4,883 drinkers. Both the two- and three-factor structures evince similar model fit. A two-factor model yielded more concise PBS measurement. Negative associations were observed with consumption (Direct/CC PBS) and problems (Indirect/HR). A condensed, eight-item, two-factor model accounted for less variance in alcohol consumption, however more variance in alcohol-related problems. A more consistent framework for understanding the impact of PBS on alcohol-related outcomes is provided.
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Affiliation(s)
| | - Robert D Dvorak
- Department of Psychology, University of Central Florida, USA
| | - Emily K Burr
- Department of Psychology, University of Central Florida, USA
| | | | | | | | - Emma R Hayden
- Department of Psychology, University of Central Florida, USA
| | - Bradley Aguilar
- Department of Psychology, University of Central Florida, USA
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2
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De Leon AN, Peterson R, Leary AV, Burr EK, Cora JL, Dvorak RD. Protective behavioral strategies as a protective factor against suicidal ideation among college student drinkers. J Am Coll Health 2024; 72:947-956. [PMID: 35427457 DOI: 10.1080/07448481.2022.2063023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 03/08/2022] [Accepted: 04/03/2022] [Indexed: 06/14/2023]
Abstract
Objective: Research shows that alcohol use is linked to suicidal ideation (SI), while depression is strongly associated with SI. Protective behavioral strategies (PBS) are safe drinking strategies. PBS are broadly protective across alcohol-related problems; however, it is unclear if these effects extend to those at risk for SI. We hypothesized that alcohol use and depressive symptoms would be risk factors for SI, and that these factors would moderate the effects of PBS. PBS was hypothesized to be protective for individuals with elevated depressive symptoms and alcohol use. Participants: College student drinkers (n = 990; M age = 19.97, SD = 3.75) from a Southeastern University. Methods: Participants completed an online survey inquiring about demographics, depressive symptoms, SI, alcohol use, and PBS use. Results: Depressive symptoms were associated with an increased likelihood of SI; however, alcohol use was not. PBS were most protective for individuals with high levels of alcohol use and/or depressive symptoms. Conclusions: PBS may be protective for heavier drinkers who are at heightened risk for SI.
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Affiliation(s)
- Ardhys N De Leon
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
| | - Roselyn Peterson
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
| | - Angelina V Leary
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
| | - Emily K Burr
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
| | - Jessica L Cora
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
| | - Robert D Dvorak
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
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3
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Christian C, Butler RM, Burr EK, Levinson C. An Intensive time series investigation of the relationships across eating disorder-specific fear responses and behavior urges in partially remitted anorexia nervosa. J Anxiety Disord 2024; 102:102804. [PMID: 38128286 PMCID: PMC10923000 DOI: 10.1016/j.janxdis.2023.102804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 09/25/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023]
Abstract
Anorexia nervosa (AN) is a serious and persistent psychiatric illness. Many individuals with AN cycle between stages of remission (i.e., relapse), with research documenting that cognitive remission generally lags behind nutritional/weight restoration. Yet, little is known about which mechanisms promote movement from partial remission in AN (defined as nutritional, but not cognitive, recovery) to full remission. Fear-based processes, including avoidance and approach behaviors, likely contribute to the persistence of cognitive-behavioral AN symptoms after nutritional restoration. The current study used intensive longitudinal data to characterize these processes during partial remission (N = 41 participants with partially remitted AN; 4306 total observations). We aimed to a) characterize frequency of fear-based processes in real-time, b) investigate associations across fear-based processes and behavioral urges, and c) test if real-time associations among symptoms differed across commonly feared stimuli (e.g., food, social situations). On average, participants endorsed moderate fear and avoidance, with weight-gain fears rated higher than other feared stimuli. Momentary fear, avoidance, approach, and distress were all positively associated with AN behavior urges at one time-point and prospectively. Central symptoms and symptom connections differed across models with different feared stimuli. These findings provide empirical support for the theorized fear-avoidance-urge cycle in AN, which may contribute to the persistence of eating pathology during partial remission. Fear approach may be associated with temporary increases in urges, which should be considered during treatment. Future research should explore these associations in large, heterogeneous samples, and test the effectiveness of exposure-based interventions during partial remission.
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Affiliation(s)
- Caroline Christian
- University of Louisville, Department of Psychological & Brain Sciences, Louisville, KY, USA.
| | - Rachel M Butler
- University of Louisville, Department of Psychological & Brain Sciences, Louisville, KY, USA
| | - Emily K Burr
- University of Central Florida, Department of Psychology, Orlando, FL, USA
| | - Cheri Levinson
- University of Louisville, Department of Psychological & Brain Sciences, Louisville, KY, USA
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Klaver SJ, Dvorak RD, De Leon AN, Burr EK, Leary AV, Hayden ER, Peterson R, Allen Q, Gwaltney CJ. Support for incentive-sensitization theory in adolescent ad libitum smokers using ecological momentary assessment. Exp Clin Psychopharmacol 2024; 32:27-34. [PMID: 37384458 PMCID: PMC10755077 DOI: 10.1037/pha0000669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
The incentive-sensitization theory (IST) has emerged as a potentially useful theory in explaining substance addiction. IST postulates that the prolonged use of a substance can alter neural systems that are often involved in incentive motivation and reward processes, leading to an increased "sensitization" to the substance and associated stimuli. However, this increased sensitization is thought to mediate only the individual's craving of the substance (e.g., their "wanting"), not their enjoyment of the substance (e.g., their "liking"), a process that may involve unconscious implicit changes in cognitive networks linked to specific substances. Consequently, IST may better explain the real-world dissonance reported for individuals who want to accomplish long-term substance cessation but fail to do so, a phenomenon that is common in adolescent smokers. Thus, the present study aimed to examine the principles of IST in a sample of 154 adolescent ad libitum smokers (Mage = 16.57, SDage = 1.12, 61.14% male) utilizing ecological momentary assessment. Data were analyzed utilizing a multilevel structural equation model examining changes in positive affect (PA), negative affect (NA), and stress from Time 1 (T1) and Time 2 (T2) as a function of smoking and tested the influence of implicit cognition (specifically, implicit attitudes about smoking [Implicit Association Test (IAT)]) on these associations. Consistent with the principles of IST, results found a modest significant negative association between smoking status at T1 and PA at T2 (B = -0.11, p = .047). This association was further moderated by IAT (B = -0.19, p = .029) and was particularly potentiated at high levels of IAT (B = -0.44, p < .001), compared to low (B = -0.05, p = .663) or mean levels of IAT (B = -0.25, p = .004). Findings from this study provide additional support to the principles underlying IST and indicate that, in adolescents, smoking may result in thwarted PA indicative of a transition from "liking" toward "wanting," and this is especially pronounced among those with stronger implicit smoking cognitions. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Peterson R, Dvorak RD, De Leon AN, Klaver SJ, Burr EK, Maynard MH, Hayden ER. Examination of the Sexual and Negative Dating Inventory (SANDI) Among Sexual and Gender Minorities: An Analysis of Psychometrics and Outcomes. Psychiatry 2024; 87:82-95. [PMID: 38285177 DOI: 10.1080/00332747.2024.2303719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
ObjectiveAdverse sexual experiences (ASE), including sexual violence, sexual risk behaviors, and regretted sex, are highly prevalent among sexual and gender minorities (SGM) compared to cisgender and heterosexual individuals. Research indicates ASEs are associated with increased mental health symptomatology and decreased subsequent protective behavior use. The Sexual and Negative Dating Inventory (SANDI) measures dating and sexual protective strategies and includes five factors: Location Sharing, Assertiveness, Self-Protection, Risk Reduction and Privacy. SANDI total scores are linked to lower ASEs in heteronormative samples. Method: SANDI was previously validated in a sample of n = 1,289 college students. Data were examined from n = 313 (24.28%) SGM individuals at baseline, and n = 95 at one-month follow-up. Individuals were 19.70 (2.98 SD) years old, and 25% were non-white. Model fit was adequate for SGM: χ2(484) = 1729.621, p < .001, CFI = .947, RMSEA = .063 (90% CI = .060, .066), SRMR = .048. Results: Non-cisgender men and non-heterosexual individuals endorse using more of the SANDI at the factor level. Using logistic regression, SANDI was not associated with history of sexual violence or sexual violence over the next month. SANDI is inversely associated with history of sexual risk and prospectively associated with less sexual risk over the next month. Negative binomial regression analyses showed SANDI was not associated with a history of regretted sex; however, SANDI was moderately associated with decreased regretted sex over the next month. Conclusion: Findings highlight the importance of dating and sexual protective behaviors across dimensions of gender and sexual orientation.
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Baker SN, Burr EK, De Leon AN, Leary AV, Rozek DC, Dvorak RD. The Mediating Roles of Affect Lability and Experiential Avoidance Between Distress Tolerance and Suicidal Ideation Among College Students. Psychol Rep 2023:332941231216671. [PMID: 37967570 DOI: 10.1177/00332941231216671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Objective: Suicidal ideation (SI) is highly prevalent among college students. Research has shown that college students are also more likely to experience low distress tolerance, affect lability, and experiential avoidance, which have been linked to SI. There is a critical need to examine the mechanisms that increase the risk of SI among college students. It is hypothesized that distress tolerance will be a strong predictor of SI, and affect lability as well as experiential avoidance will mediate this relationship. Participants and Methods: Participants (n = 820) from a Southeastern University completed an online survey, inquiring about demographic information, affect lability, SI, experiential avoidance, and distress tolerance. Data were analyzed utilizing structural equation modeling. Results: Distress tolerance was not directly related to SI. However, affect lability and experiential avoidance were found to mediate this relationship. Conclusions: Affect lability and experiential avoidance may be important predictors of SI among college students.
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Affiliation(s)
| | - Emily K Burr
- The University of Central Florida, Orlando, FL, USA
| | | | | | - David C Rozek
- The University of Central Florida, Orlando, FL, USA
- University of Texas Health Science Center San Antonio, San Antonio, TX, USA
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7
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Forester G, Schaefer LM, Dodd DR, Burr EK, Bartholomay J, Berner L, Crosby RD, Peterson CB, Crow SJ, Engel SG, Wonderlich SA. Time-of-day and day-of-week patterns of binge eating and relevant psychological vulnerabilities in binge-eating disorder. Int J Eat Disord 2023; 56:1694-1702. [PMID: 37212510 PMCID: PMC10600945 DOI: 10.1002/eat.23995] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/23/2023]
Abstract
OBJECTIVE The present study sought to characterize the temporal patterns of binge eating and theorized maintenance factors among individuals with binge-eating disorder (BED). METHOD Ecological momentary assessment of 112 individuals and mixed-effects models were used to characterize the within- and between-day temporal patterns of eating behaviors (binge eating, loss of control only eating, and overeating only), positive and negative affect, emotion regulation difficulty, and food craving. RESULTS Risk for binge eating and overeating only was highest around 5:30 p.m., with additional binge-eating peaks around 12:30 and 11:00 p.m. In contrast, loss of control eating without overeating was more likely to occur before 2:00 p.m. Risk for binge eating, loss of control only eating, and overeating only did not vary across days in the week. There was no consistent pattern of change in negative affect throughout the day, but it decreased slightly on the weekend. Positive affect showed a decrease in the evenings and a smaller decrease on the weekend. The within-day patterns of food craving, and to some extent emotion regulation difficulty, resembled the pattern of binge eating, with peaks around meal times and at the end of the night. DISCUSSION Individuals with BED appear most susceptible to binge-eating around dinner time, with heightened risk also observed around lunch time and late evening, though the effects were generally small. These patterns appear to most strongly mimic fluctuations in craving and emotion dysregulation, although future research is needed to test the temporal relationships between these experiences directly. PUBLIC SIGNIFICANCE It is unknown which times of the day and days of the week individuals with binge-eating disorder are most at risk for binge eating. By assessing binge-eating behaviors in the natural environment across the week, we found that individuals are most likely to binge in the evening, which corresponds to the times when they experience the strongest food craving and difficulty with regulating emotions.
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Affiliation(s)
| | - Lauren M. Schaefer
- Center for Biobehavioral Research, Sanford Research
- Department of Psychiatry and Behavioral Science, University of North Dakota School of Medicine and Health Sciences
| | | | - Emily K. Burr
- Center for Biobehavioral Research, Sanford Research
- Department of Psychology, University of Central Florida
| | | | - Laura Berner
- Icahn School of Medicine at Mount Sinai, New York, USA
| | - Ross D. Crosby
- Center for Biobehavioral Research, Sanford Research
- Department of Psychiatry and Behavioral Science, University of North Dakota School of Medicine and Health Sciences
| | - Carol B. Peterson
- Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School
| | - Scott J. Crow
- Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School
| | - Scott G. Engel
- Center for Biobehavioral Research, Sanford Research
- Department of Psychiatry and Behavioral Science, University of North Dakota School of Medicine and Health Sciences
| | - Stephen A. Wonderlich
- Center for Biobehavioral Research, Sanford Research
- Department of Psychiatry and Behavioral Science, University of North Dakota School of Medicine and Health Sciences
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Schaefer LM, Forester G, Burr EK, Laam L, Crosby RD, Peterson CB, Crow SJ, Engel SG, Dvorak RD, Wonderlich SA. Examining the role of craving in affect regulation models of binge eating: Evidence from an ecological momentary assessment study. J Psychopathol Clin Sci 2023; 132:725-732. [PMID: 37307313 PMCID: PMC10695167 DOI: 10.1037/abn0000839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Affect regulation models hypothesize that aversive affective states drive binge-eating behavior, which serves to regulate unpleasant emotions. Research using ecological momentary assessment (EMA) demonstrates that increases in guilt most strongly predict subsequent binge-eating episodes, raising the question: why would individuals with binge-eating pathology engage in a binge-eating episode when they feel guilty? Food craving is a robust predictor of binge eating and is commonly associated with subsequent feelings of guilt. The current study used EMA to test the hypothesis that food craving may promote increased feelings of guilt, which then predict an increased risk of binge eating within a sample of 109 individuals with binge-eating disorder. Multilevel mediation models indicated that increased momentary craving at Time 1 directly predicted a greater likelihood of binge eating at Time 2, and craving also indirectly predicted binge eating at Time 2 through momentary increases in guilt at Time 2. In other words, experiencing food craving at one time point was related to an increased likelihood of binge eating at the next time point, and a portion of this influence was attributable to increasing feelings of guilt. These results challenge simple affect regulation models of binge eating, suggesting that food-related anticipatory reward processes (i.e., craving) may be the primary driver of binge-eating risk and account for the increases in guilt commonly observed prior to binge-eating episodes. Although experimental studies are needed to confirm this possibility, these results suggest the importance of addressing food cravings within interventions for binge-eating disorder. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
| | - Glen Forester
- Sanford Research, Sanford Center for Biobehavioral Research
| | - Emily K Burr
- Sanford Research, Sanford Center for Biobehavioral Research
| | - Leslie Laam
- Sanford Research, Sanford Center for Biobehavioral Research
| | - Ross D Crosby
- Sanford Research, Sanford Center for Biobehavioral Research
| | - Carol B Peterson
- Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School
| | - Scott J Crow
- Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School
| | - Scott G Engel
- Sanford Research, Sanford Center for Biobehavioral Research
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Leary AV, Dvorak RD, Burr EK, Peterson R, De Leon AN, Klaver SJ, Maynard MH. Development and validation of the Personal Assessment of Responsible Drinking Identity (PARDI) with a college student sample. Psychol Assess 2023:2023-74879-001. [PMID: 37227839 PMCID: PMC10384221 DOI: 10.1037/pas0001236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Recent research shows a link between identity and behavior change. Despite the existence of several measures that assess components of drinking identity, no measures examine the idiosyncrasies of a "Responsible Drinking Identity," though responsible drinking is an aim of many alcohol-related interventions. The present study created a measure of responsible drinking identity, the Personal Assessment of Responsible Drinking Identity (PARDI). Two cross-sectional designs and a prospective follow-up were used to develop and assess the psychometric properties of the PARDI. Study 1 used a U.S. national sample of college students who endorsed alcohol use (n = 911) to conduct an Exploratory Factor Analysis. Study 2 consisted of college students from a Southeastern University (n = 1,096) and was used to conduct a Confirmatory Factor Analysis, as well as evaluate convergent, discriminant, concurrent, and incremental validity. A subsample from Study 2 was then assessed after 1 month (n = 194). The follow-up examined test-retest reliability and predictive validity. The PARDI consists of four identity-based factors that are indicative of responsible drinking. The measure had adequate validity across all domains and good test-retest reliability. The measure appears to predict future protective behaviorial strategies (safe drinking behaviors), which mediates the relationship between the PARDI and both future alcohol use and consequences, suggesting safe or responsible drinking identity may drive a key behavioral target of substance use interventions. The PARDI may offer a tool to aid in quantifying underlying constructs of identity and behavior change in substance use interventions. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
| | | | - Emily K Burr
- Department of Psychology, University of Central Florida
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10
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Burr EK, Dvorak RD, Kramer MP, Ochoaleyva A. Emotion regulation difficulties are associated with loss-of-control eating dependent on degree of narcissistic traits in college students. Eat Behav 2023; 49:101732. [PMID: 37146412 PMCID: PMC10247441 DOI: 10.1016/j.eatbeh.2023.101732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 03/25/2023] [Accepted: 04/23/2023] [Indexed: 05/07/2023]
Abstract
Loss-of-control eating (LOCE) is highly prevalent in college students and may be driven by enduring personality traits. Narcissism is often conceptualized with two broad domains: grandiose and vulnerable. The association between narcissism and LOCE has not been directly assessed, nor the potential influence of emotion regulation deficits, which are differentially associated with grandiosity and vulnerability. This study hypothesized an association between vulnerable narcissism and LOCE in college students by way of emotion regulation difficulties, extending prior findings. Participants (n = 704) completed a survey on pathological eating and body image disturbance, emotion regulation difficulties, and narcissistic traits. Results supported a full mediation effect, such that vulnerable narcissism was positively associated with LOCE by way of emotion regulation difficulties. Present findings suggest the mechanism primarily predictive of LOCE is emotion regulation difficulties, and predisposition to deficits in emotion regulation associated with vulnerable narcissism may increase the odds of LOCE. Additionally, it was noted that grandiose narcissism evinced a fully mediated inverse association with LOCE. Clinical implications and directions for future research are discussed.
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Affiliation(s)
- Emily K Burr
- University of Central Florida, Department of Psychology, United States of America.
| | - Robert D Dvorak
- University of Central Florida, Department of Psychology, United States of America
| | - Matthew P Kramer
- Sanford Health, Department of Behavioral Health, United States of America
| | - Amy Ochoaleyva
- University of Central Florida, Department of Psychology, United States of America
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11
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Maynard M, Burr EK, Allen Q, Dvorak RD, Paulson D. Loss-of-Control-Eating Mediates the Relationship between Cannabis-Related Problems and Eating Pathology. Psychol Rep 2023:332941231161999. [PMID: 36921084 DOI: 10.1177/00332941231161999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
The prevalence of eating pathology among college students has increased significantly in recent years. This coincides with increases in the use of cannabis, both nationally, but also among college students. Problematic cannabis use has been linked to eating pathology in prior research. Research also shows that cannabis may affect appetitive drives linked to food consumption. The current study tested the hypothesis that the association between problem cannabis use and eating pathology was mediated by greater loss of control eating. Cross-sectional data were collected from a sample of 805 college student cannabis users at a large Southeastern university in the U.S. The sample were primarily Caucasian (76%) and female (65.22%) with an average age of 20.15 (SD = 3.91). Participants completed surveys assessing eating outcomes (loss of control eating and eating pathology), cannabis use, and cannabis-related problems. The analysis used an observed variable path model. After controlling for cannabis use, cannabis-related problems were indirectly linked to eating pathology via loss of control eating (B = 0.109, SE = 0.025, p < .001), supporting the primary hypothesis. The direct relationship between cannabis-related problems and eating pathology was fully accounted for (B = 0.010, SE = 0.028, p = .724) by the indirect effect of loss of control eating. These data suggest that the association between problematic forms of cannabis use and eating pathology may be due to the association between cannabis problems and loss of control eating. While this may be due to changes in appetite and food evaluation as a function of more problematic use patterns, it may also be that individuals with problematic cannabis use have more problematic eating patterns due to deficits in adaptive coping strategies. Future research should seek to parse out these different potential explanations.
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Affiliation(s)
| | - Emily K Burr
- 6243The University of Central Florida, Orlando, FL, USA
| | - Quinn Allen
- 6243The University of Central Florida, Orlando, FL, USA
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12
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Burr EK, Dvorak RD, Peterson R, De Leon AN. Greater negative affect reduction expectancies moderate the interactive relationship between emotion regulation difficulties and distress tolerance in predicting loss-of-control eating. Br J Health Psychol 2023; 28:47-61. [PMID: 35778877 DOI: 10.1111/bjhp.12611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 05/02/2022] [Accepted: 06/13/2022] [Indexed: 01/10/2023]
Abstract
OBJECTIVES Loss-of-control eating (LOCE) is often conceptualized as a negative reinforcement mechanism. However, LOCE does not consistently reduce negative affect (NA). One explanation for continued LOCE, despite a lack of NA reduction, may be expectations of NA reduction. Emotion regulation difficulties and low distress tolerance often predict LOCE, but have not been examined in the context of NA reduction expectancies. DESIGN This study examined the main and interactive relationships between emotion regulation difficulties, distress tolerance and NA reduction expectancies on LOCE in US adults (n = 3331). METHOD This study consisted of a battery of surveys administered to a national sample of US adults. RESULTS Results indicate NA reduction expectancies are robust, eclipsing the predictive effects of other emotion regulation variables. Distress tolerance was only able to attenuate the relationship between emotion regulation difficulties and LOCE when NA reduction expectancies were low. CONCLUSIONS These findings identify NA reduction expectancies as having a strong relationship with LOCE, such that the protective factor of distress tolerance is only relevant when such expectancies are low. Clinical implications suggest that targeting NA reduction expectancies in eating interventions that bolster emotion regulation difficulties and distress tolerance may improve the effectiveness of said interventions. Additionally, stand-alone expectancy interventions should be assessed for the purpose of LOCE reduction. Directions for future research are discussed.
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Affiliation(s)
- Emily K Burr
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
| | - Robert D Dvorak
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
| | - Roselyn Peterson
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
| | - Ardhys N De Leon
- Department of Psychology, University of Central Florida, Orlando, Florida, USA
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13
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Burr EK, Dvorak RD, De Leon AN, Leary AV, Peterson R, Schaefer LM, Wonderlich SA. The role of eating expectancies and eating motives in the association between mood and loss-of-control eating: A national sample daily diary study. Appetite 2023; 180:106322. [PMID: 36208692 PMCID: PMC9794028 DOI: 10.1016/j.appet.2022.106322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 07/12/2022] [Accepted: 09/26/2022] [Indexed: 12/12/2022]
Abstract
Loss-of-control eating (LOCE, the subjective inability to refrain from eating or cease eating), is highly mood-driven. Mood-related eating motives and eating expectancies have been identified as contributors to binge eating. However, little is known about how these factors relate to LOCE, much less their relationship with daily-level LOCE. This study assessed the impact of trait eating expectancies and daily eating motives on the relationship between daily affective states and LOCE. United States adults (n = 109) reporting recent LOCE participated in a ten-day diary study, completing two surveys per day regarding eating behaviors, mood, and motives. Data were analyzed at the within- and between-subject levels utilizing a Bayesian approach to examine pathways from mood to LOCE, mediated by eating motives and accounting for a moderating impact of baseline eating expectancies on the path leg between mood and motives. Negative mood was associated with LOCE at both the within- and between-subjects level by way of coping motives, and directly at the within-subjects level. Negative affect (NA) reduction expectancies did not moderate the indirect pathway. Positive mood was only associated with LOCE at the within-subjects level, via pleasure motives. This relationship was potentiated via reward expectancies. Therefore, although negative mood appears be a robust predictor of LOCE regardless of trait NA reduction expectancies, positive mood appears to have a specific set of conditions under which individuals are at increased likelihood of LOCE at the within-subjects level. These findings suggest that eating expectancies and motives for eating may be meaningful targets in LOCE interventions.
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Affiliation(s)
- Emily K Burr
- University of Central Florida, Department of Psychology, United States.
| | - Robert D Dvorak
- University of Central Florida, Department of Psychology, United States
| | - Ardhys N De Leon
- University of Central Florida, Department of Psychology, United States
| | - Angelina V Leary
- University of Central Florida, Department of Psychology, United States
| | - Roselyn Peterson
- University of Central Florida, Department of Psychology, United States
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14
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De Leon AN, Peterson R, Dvorak RD, Leary AV, Kramer MP, Burr EK, Toth EM, Pinto D. The Health Belief Model in the Context of Alcohol Protective Behavioral Strategies. Psychiatry 2023; 86:1-16. [PMID: 36240071 DOI: 10.1080/00332747.2022.2114270] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Objective: Alcohol use continues to be prevalent and problematic among young adult samples. Protective behavioral strategies (PBS), which are harm reduction strategies utilized while drinking, have been linked to decreased alcohol use and subsequent alcohol-related problems. An individual's likelihood of adopting PBS and other health behaviors, according to The Health Belief Model (HBM), is dependent on perceived susceptibility to and severity of adverse health outcomes, as well as perceived benefits and barriers related to implementing those behaviors. The present study examined whether the perceived effectiveness of PBS in the context of the HBM leads to an increase in PBS use. Method: The analytic sample (n =694 college students, Mage =20.21, SD =4.37, 63.26% female, 72.05% Caucasian) self-reported demographics, weekly alcohol consumption (i.e., frequency, intensity, and quantity), alcohol-related problems, use of PBS, and perceived effectiveness of PBS use. A latent variable model was used to test the effect of perceived PBS effectiveness on PBS use, alcohol consumption, and alcohol-related problems. Results: Perceived PBS effectiveness was associated with a higher likelihood of using PBS subtypes (Manner of Drinking, Stopping/Limiting Drinking, and Serious Harm Reduction), which in turn was associated with reductions in alcohol consumption and problems. Conclusions: These findings suggest that increasing perceptions of PBS effectiveness may lead to more PBS use, decreased alcohol consumption, and fewer alcohol-related problems. Future research could implement longitudinal methodology to assess attempts to increase perceived effectiveness of PBS use and potentially establish a causal link between these perceptions, PBS use, and alcohol-related outcomes.
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15
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Moskal KR, Dvorak RD, Burr EK, El Helou G, Cora JL, De Leon AN, Leary AV. Attention bias and alcohol craving: Differential effects via biological sex and mood. Alcohol Clin Exp Res 2022; 46:1580-1591. [PMID: 36029302 DOI: 10.1111/acer.14894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 05/10/2022] [Accepted: 06/17/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND Attentional bias (AB) has been linked to alcohol use, mood, and alcohol craving, with key differences across different types of mood and biological sex. However, further exploration of the role of AB across these alcohol variables is needed. The current study examined the relationship between mood and AB as predictors of alcohol craving using ecological momentary assessment (EMA). Exploratory analysis examined these effects as a function of biological sex. METHODS Participants (n = 69) from a Midwestern University carried a mobile device for 15 days and provided ratings of momentary mood (positive mood, anxious mood, and sad mood), alcohol craving, and AB. Data were analyzed using a two-level multilevel regression model, with associations between craving, mood, and AB examined at both the momentary and between-subjects levels. RESULTS Across assessments, positive and negative moods were positively associated with momentary craving, with AB found to operate differently between men and women. At the within-subjects level, increases in positive mood among men strengthened the AB-craving association, while women showed stronger AB-craving associations when positive mood decreased. At the between-subjects level, trait-like sadness led to positive AB-craving associations for men, however, this was the opposite for women. Similarly, AB-craving associations were positive and robust for men with trait-like positive mood but again the opposite was observed for women. CONCLUSIONS The findings highlight the importance and nuances of biological sex in the context of mood, AB, and craving. Interventions targeting AB and/or emotion regulation may yield different outcomes for men and women.
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Affiliation(s)
- Katie R Moskal
- Department of Psychology, The University of Central Florida, Orlando, Florida, USA
| | - Robert D Dvorak
- Department of Psychology, The University of Central Florida, Orlando, Florida, USA
| | - Emily K Burr
- Department of Psychology, The University of Central Florida, Orlando, Florida, USA
| | | | - Jessica L Cora
- Department of Psychology, The University of Central Florida, Orlando, Florida, USA
| | - Ardhys N De Leon
- Department of Psychology, The University of Central Florida, Orlando, Florida, USA
| | - Angelina V Leary
- Department of Psychology, The University of Central Florida, Orlando, Florida, USA
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16
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Burr EK, Dvorak RD, Stevenson BL, Schaefer LM, Wonderlich SA. Ability to tolerate distress moderates the indirect relationship between emotion regulation difficulties and loss-of-control over eating via affective lability. Eat Behav 2021; 43:101561. [PMID: 34517279 PMCID: PMC8629940 DOI: 10.1016/j.eatbeh.2021.101561] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 07/27/2021] [Accepted: 08/31/2021] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Loss-of-control eating (LOCE), inability to refrain from or cease eating, may contribute to significant distress and dysfunction, yet research is lacking specificity on vulnerabilities contributing to LOCE as an independent construct. Preliminary evidence indicates potential roles of distress tolerance, emotion regulation, and affective lability, but the relationship between these variables and LOCE has been under-assessed. MATERIAL AND METHODS A sample (N = 3968) consisting of university students completed an assessment of pathological eating and affiliated affective vulnerabilities. A latent variable structural equation model (SEM) was generated to predict LOCE by way of affective lability and indirectly, emotion regulation difficulties and low distress tolerance, controlling for general eating pathology. RESULTS Findings indicated a significant direct effect of affective lability on LOCE, as well as significant indirect effects of emotion regulation difficulties and distress tolerance on LOCE, via affect lability. Additionally, distress tolerance moderated the relationship between emotion regulation difficulties and affective lability, such that lower ability to tolerate distress strengthened the relationship and higher distress tolerance capability attenuated it. DISCUSSION Findings suggest an influence of distress tolerance on the relationship between poor emotion regulation and affective lability, which in turn may affect LOCE. Clinical implications and suggestions for future research are discussed.
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Affiliation(s)
- Emily K Burr
- Department of Psychology, University of Central Florida, United States of America.
| | - Robert D Dvorak
- Department of Psychology, University of Central Florida, United States of America.
| | | | - Lauren M Schaefer
- Sanford Center for Bio-behavioral Research, Department of Psychiatry and Behavioral Science, University of North Dakota School of Medicine and Health Sciences, United States of America
| | - Stephen A Wonderlich
- Sanford Center for Bio-behavioral Research, Department of Psychiatry and Behavioral Science, University of North Dakota School of Medicine and Health Sciences, United States of America.
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17
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Coniglio KA, Rosen R, Burr EK, Farris SG. Adherence to low-calorie and low-sugar diets is uniquely associated with distinct facets of appearance/weight-related smoking motivations. J Behav Med 2020; 43:487-492. [PMID: 32246293 DOI: 10.1007/s10865-020-00149-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 03/21/2020] [Indexed: 11/26/2022]
Abstract
Smokers report weight and appetite control as motivators to smoking continuance. These concerns are particularly salient for smokers who use cigarettes to suppress appetite and manage weight. Dieting may influence weight, shape, and appetite-related smoking motivation; however, this has not yet been examined. This study tested associations between five diet types and smoking motivation to control weight, shape, and appetite among adult daily cigarette smokers (N = 550). A multivariate analysis was used to test the incremental association between diet types and Smoking-Related Weight and Eating Episodes Test (SWEET) subscales, adjusting for age, body mass index, sex, and cigarette dependence. Smokers who diet (n = 83, 15.1%) reported higher scores on all SWEET subscales compared to smokers not on a diet. Low-calorie dieting was associated with greater smoking motivation to cope with body dissatisfaction, and low-sugar dieting was associated with greater motivation for smoking to prevent withdrawal-related appetite increases. Treatment implications for smoking cessation are discussed.
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Affiliation(s)
- Kathryn A Coniglio
- Department of Psychology, Rutgers, the State University of New Jersey, 53 Avenue East, Piscataway, NJ, 08854, USA
| | - Rachel Rosen
- Department of Psychology, Rutgers, the State University of New Jersey, 53 Avenue East, Piscataway, NJ, 08854, USA
| | - Emily K Burr
- Department of Psychology, Rutgers, the State University of New Jersey, 53 Avenue East, Piscataway, NJ, 08854, USA
| | - Samantha G Farris
- Department of Psychology, Rutgers, the State University of New Jersey, 53 Avenue East, Piscataway, NJ, 08854, USA.
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18
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Burr EK, O'Keeffe B, Kibbey MM, Coniglio KA, Leyro TM, Farris SG. Distress Intolerance in Relation to Reliance on Cigarettes for Weight, Shape, and Appetite Control. Int J Behav Med 2020; 27:247-254. [PMID: 32124245 DOI: 10.1007/s12529-020-09858-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND Distress intolerance, one's inability to withstand distressing emotional or physical states, is a transdiagnostic vulnerability implicated in affect-based health behaviors, including cigarette smoking and poor weight control. The current study evaluated associations between distress intolerance and the reliance on cigarettes for management of weight, appetite, or body dissatisfaction, which may pose a burden for cessation and increase risk of weight-related health problems. METHOD Daily smokers (n = 577) completed an online survey assessing distress tolerance and reliance on cigarettes for weight and shape control with the four subscales of the Smoking and Weight Eating Episodes Test (SWEET). Four hierarchical regression models were constructed to test the association between distress intolerance and SWEET scores, accounting for the effect of relevant covarying factors. RESULTS After adjusting for model covariates, distress intolerance was significantly incrementally associated with greater tendency to rely on cigarettes to suppress appetite (adjR2 = .040), prevent overeating (adjR2 = .034), cope with body dissatisfaction (adjR2 = .046), and cope with nicotine withdrawal-related appetite increases (adjR2 = .030). CONCLUSION Distress intolerance may play an etiological role in maladaptive use of cigarettes to control appetite, weight, and body dissatisfaction among daily smokers, particularly those with weight- or shape-related concerns. Interventions aimed at increasing perceived ability to withstand distress could potentially reduce reliance on cigarettes for the aforementioned purposes.
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Affiliation(s)
- Emily K Burr
- Department of Psychology, Rutgers, the State University of New Jersey, 53 Avenue East, Piscataway, NJ, 08854, USA
| | | | - Mindy M Kibbey
- Department of Psychology, Rutgers, the State University of New Jersey, 53 Avenue East, Piscataway, NJ, 08854, USA
| | - Kathryn A Coniglio
- Department of Psychology, Rutgers, the State University of New Jersey, 53 Avenue East, Piscataway, NJ, 08854, USA
| | - Teresa M Leyro
- Department of Psychology, Rutgers, the State University of New Jersey, 53 Avenue East, Piscataway, NJ, 08854, USA
| | - Samantha G Farris
- Department of Psychology, Rutgers, the State University of New Jersey, 53 Avenue East, Piscataway, NJ, 08854, USA.
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19
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Farris SG, Thomas JG, Abrantes AM, Lipton RB, Burr EK, Godley FA, Roth JL, Pavlovic JM, Bond DS. Anxiety sensitivity and intentional avoidance of physical activity in women with probable migraine. Cephalalgia 2019; 39:1465-1469. [PMID: 31260336 DOI: 10.1177/0333102419861712] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Avoidance of physical activity is a common migraine management strategy. Anxiety sensitivity (i.e. fear of anxiety and bodily sensations due to physical, cognitive, or social consequences) is a potential correlate of physical activity avoidance and may strengthen beliefs about physical activity's detrimental effect on migraine. METHOD Women (n = 100) with probable migraine diagnosis completed an online survey about migraine and physical activity, which included the Anxiety Sensitivity Index-3. RESULTS Anxiety sensitivity was associated with significantly increased odds of avoiding moderate- and vigorous-intensity physical activity. Anxiety sensitivity, particularly cognitive concerns, was associated with more frequent vigorous and moderate physical activity avoidance. Social concerns about anxiety sensitivity were associated with stronger expected likelihood of vigorous-intensity physical activity as a triggering and worsening factor in migraine. DISCUSSION Preliminary findings indicate that anxiety sensitivity may contribute to avoidance of moderate and vigorous physical activity and fear-based cognitions about exercise.
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Affiliation(s)
- Samantha G Farris
- Rutgers, the State University of New Jersey, Department of Psychology, Piscataway, NJ, USA
| | - J Graham Thomas
- Alpert Medical School of Brown University, Providence, RI, USA.,Miriam Hospital, Weight Control and Diabetes Research Center, Providence, RI, USA
| | - Ana M Abrantes
- Alpert Medical School of Brown University, Providence, RI, USA.,Butler Hospital, Behavioral Medicine and Addictions Research Unit, Providence, RI, USA
| | - Richard B Lipton
- Albert Einstein College of Medicine, Department of Neurology, New York, NY, USA.,Montefiore Medical Center/Montefiore Headache Center, New York, NY, USA
| | - Emily K Burr
- Rutgers, the State University of New Jersey, Department of Psychology, Piscataway, NJ, USA
| | | | - Julie L Roth
- Alpert Medical School of Brown University, Providence, RI, USA.,Rhode Island Hospital, Department of Neurology, Providence, RI, USA
| | - Jelena M Pavlovic
- Albert Einstein College of Medicine, Department of Neurology, New York, NY, USA.,Montefiore Medical Center/Montefiore Headache Center, New York, NY, USA
| | - Dale S Bond
- Alpert Medical School of Brown University, Providence, RI, USA.,Miriam Hospital, Weight Control and Diabetes Research Center, Providence, RI, USA
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Farris SG, Burr EK, Abrantes AM, Thomas JG, Godley FA, Roth JL, Lipton RB, Pavlovic JM, Bond DS. Anxiety Sensitivity as a Risk Indicator for Anxiety, Depression, and Headache Severity in Women With Migraine. Headache 2019; 59:1212-1220. [PMID: 31166015 DOI: 10.1111/head.13568] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The primary aim of this exploratory study was to assess the relationship between anxiety sensitivity and emotional disorders, migraine characteristics, and migraine-related fear and avoidance behaviors in women with probable migraine. BACKGROUND Anxiety and depressive disorders are the most frequent comorbid psychiatric conditions in migraine, particularly in women; however, the underlying reasons for these comorbidities are uncertain. Anxiety sensitivity, the tendency to catastrophically appraise anxiety and bodily sensations in terms of their physical, social, or cognitive consequences, is a psychological factor that may contribute to the comorbidity of anxiety and depressive disorders and migraine. It was hypothesized that anxiety sensitivity would be associated with greater migraine severity and psychiatric symptoms. METHOD Participants were women (n = 100) who screened positive for migraine on the validated IDMigraine Screener participated in an anonymous single-session online survey-based study on migraine. The Anxiety Sensitivity Index-3 total and subscales scores were used to assess anxiety sensitivity. Anxiety and depression symptoms were assessed with the brief Patient Health Questionnaire. RESULTS On average, anxiety sensitivity was clinically elevated (mean ± SD: 24.0 ± 15.2). Anxiety sensitivity cognitive and social concerns were most strongly correlated with severity of anxiety (r's = .38-.46) and depressive symptoms (r = .35-.39, P's < .001), and all anxiety sensitivity facets were related to fear of head pain (r's = .35-.38, P's < .001). Anxiety sensitivity cognitive concern facet was uniquely related to headache patterns, including longer migraine attack duration (r = .22, P = .029) and pain intensity (r = .24, P = .029), pain-related avoidance, including avoiding movement and more frequent misuse of prescribed or non-prescribed pain medication (r's = .20-.21, P's < .01). CONCLUSIONS These novel findings indicate that anxiety sensitivity, specifically fearful appraisal of bodily sensations, are linked to both psychiatric symptoms and migraine severity in women. In this cross-sectional study, causal sequence cannot be determined. If anxiety sensitivity leads to more severe pain and psychiatric distress, targeting anxiety sensitivity could lead to better headache outcomes.
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Affiliation(s)
- Samantha G Farris
- Department of Psychology, Rutgers, the State University of New Jersey, Piscataway, NJ, USA
| | - Emily K Burr
- Department of Psychology, Rutgers, the State University of New Jersey, Piscataway, NJ, USA
| | - Ana M Abrantes
- Alpert Medical School of Brown University, Providence, RI, USA.,Behavioral Medicine and Addictions Research Unit, Butler Hospital, Providence, RI, USA
| | - J Graham Thomas
- Alpert Medical School of Brown University, Providence, RI, USA.,Weight Control and Diabetes Research Center, The Miriam Hospital, Providence, RI, USA
| | | | - Julie L Roth
- Alpert Medical School of Brown University, Providence, RI, USA.,Department of Neurology, Rhode Island Hospital, Providence, RI, USA
| | - Richard B Lipton
- Department of Neurology, Albert Einstein College of Medicine, New York, NY, USA.,Montefiore Medical Center/Montefiore Headache Center, New York, NY, USA
| | - Jelena M Pavlovic
- Department of Neurology, Albert Einstein College of Medicine, New York, NY, USA.,Montefiore Medical Center/Montefiore Headache Center, New York, NY, USA
| | - Dale S Bond
- Alpert Medical School of Brown University, Providence, RI, USA.,Weight Control and Diabetes Research Center, The Miriam Hospital, Providence, RI, USA
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