Tracey D. Wade

Perfectionism as a transdiagnostic process: A clinical review

Perfectionism is a risk and maintaining factor for eating disorders, anxiety disorders and depression. The objective of this paper is to review the four bodies of evidence supporting the notion that perfectionism is a transdiagnostic process. First, a review of the literature was conducted that demonstrates the elevation of perfectionism across numerous anxiety disorders, depression, and eating disorders compared to healthy controls. Data is presented that shows perfectionism increases vulnerability for eating disorders, and that it maintains obsessive-compulsive disorder, social anxiety and depression as it predicts treatment outcome in these disorders. Second, evidence is examined showing that elevated perfectionism is associated with co-occurrence of psychopathology. Third, the different conceptualisations of perfectionism are reviewed, including a cognitive-behavioural conceptualisation of clinical perfectionism that can be utilised to understand this transdiagnostic process. Fourth, evidence that treatment of perfectionism results in reductions in anxiety, depression and eating pathology is reviewed. Finally, the importance of clinicians considering the routine assessment and treatment of perfectionism is outlined.

Twin studies of eating disorders : A review

OBJECTIVE Twin methodology has been used to delineate etiological factors in many medical disorders and behavioral traits including eating disorders. Although twin studies are powerful tools, their methodology can be arcane and their implications easily misinterpreted. METHOD The goals of this study are to (a) review the theoretical rationale for twin studies; (b) provide a framework for their interpretation and evaluation; (c) review extant twin studies on eating disorders; and (d) explore the implications for understanding etiological issues in eating disorders. DISCUSSION On the basis of this review, it is not possible to draw firm conclusions regarding the precise contribution of genetic and environmental factors to anorexia nervosa. Twin studies confirm that bulimia nervosa is familial and reveal significant contributions of additive genetic effects and of unique environmental factors in liability to bulimia nervosa. The magnitude of the contribution of shared environment is less clear, but in the studies with the greatest statistical power, it appears to be less prominent than additive genetic factors.

Relating body mass index to figural stimuli: population-based normative data for Caucasians.

OBJECTIVE: To establish body mass index (BMI) norms for standard figural stimuli using a large Caucasian population-based sample. In addition, we sought to determine the effectiveness of the figural stimuli to identify individuals as obese or thin.DESIGN: All Caucasian twins born in Virginia between 1915 and 1971 were identified by public birth record. In addition, 3347 individual twins responded to a letter published in the newsletter of the American Association of Retired Persons (AARP). All adult twins (aged 18 and over) from both of these sources and their family members were mailed a 16 page ‘Health and Lifestyle’ questionnaire.SUBJECTS: BMI and silhouette data were available on 16 728 females and 11 366 males ranging in age from 18–100.MEASUREMENTS: Self-report information on height-weight, current body size, desired body size and a discrepancy score using standard figural stimuli.RESULTS: Gender- and age-specific norms are presented linking BMI to each of the figural stimuli. Additional norms for desired body size and discrepancy scores are also presented. Receiver operating curves (ROC) indicate that the figural stimuli are effective in classifying individuals as obese or thin.CONCLUSIONS: With the establishment of these norms, the silhouettes used in standard body image assessment can now be linked to BMI. Differences were observed between women and men in terms of desired body size and discrepancy scores, with women preferring smaller sizes. The figural stimuli are a robust technique for classifying individuals as obese or thin.

The relationship between social support and major depression: cross-sectional, longitudinal, and genetic perspectives.

Although social support (SS) is associated with risk for major depression (MD), we are uncertain of the extent to which a) low SS increases risk for MD, b) MD lowers SS, or c) both variables reflect a common genetic liability. Using two waves of interview data on female twin pairs from a population-based registry, we examine the cross-sectional and longitudinal association of eight dimensions of perceived SS and MD. Risk for MD in the last year was inversely associated with supportive spouse and relative relationships, and directly associated with problems in these relationships (e.g., too many demands, criticism, tension, and disagreements). Significant cross-time associations were seen only for spousal variables. The history of MD in one twin significantly predicted low relative and spouse support, and relative and friend problems, in her co-twin (MZ > DZ pairs). The relationship between SS and MD in women is complex and due to at least the three separate mechanisms outlined above that operate to varying degrees in different dimensions of SS.

Reduction of Shape and Weight Concern in Young Adolescents: A 30-Month Controlled Evaluation of a Media Literacy Program.

OBJECTIVE Recent eating disorder prevention efforts have targeted high-risk females in late adolescence (>15 years). Methodologically rigorous evaluations of prevention programs directed to younger, mixed-sex, universal audiences are largely absent. The primary objective was to evaluate a theoretically informed media literacy program delivered to a mixed-sex, universal, young adolescent audience. METHOD Five hundred forty Grade 8 students (mean age 13.62 years, SD 0.37 years) from 4 schools participated with a total of 11 classes receiving the 8-lesson media literacy program (126 girls and 107 boys) and 13 comparison classes receiving their normal school lessons (147 girls and 160 boys). Shape and weight concern (primary outcome variable) and seven additional eating disorder risk factors (e.g., dieting, media internalization) were measured with validated questionnaires at baseline, postprogram, and 6- and 30-month follow-up. RESULTS Linear mixed model analyses were conducted using a 2 (group: media literacy program, control) x 3 (time: postprogram, 6-month follow-up, 30-month follow-up) x 2 (sex: girls, boys) mixed within-between design, with baseline entered as a covariate. Main effects for group, favoring the media literacy program, were found for shape and weight concern (effect size [ES] = 0.29), dieting (ES = 0.26), body dissatisfaction (ES = 0.20), ineffectiveness (ES = 0.23), and depression (ES = 0.26). CONCLUSION Media literacy can be an effective intervention for reducing shape and weight concern and other eating disorder risk factors long-term in a universal mixed-sex, young adolescent population. More evaluations of methodologically sound prevention programs are required with this demographic.

Individual differences in male body image: an examination of self-objectification in recreational body builders

OBJECTIVES Male bodybuilders have been found previously to have higher levels of disordered eating and body-image disturbance than do other men. This study investigated whether objectification theory (Fredrickson & Roberts, 1997) could be used to explain these observed differences in male body-image. DESIGN A cross-sectional, self-report design was used. METHODS Three samples of men were recruited: bodybuilders (N = 31), weightlifters (N = 17), and non-athletic controls (N = 35). Participants completed a questionnaire containing measures of self-objectification, self-surveillance, body shame, appearance anxiety, and four outcomes: body dissatisfaction, drive for muscularity, bulimia, and depression. RESULTS As predicted, bodybuilders had significantly higher levels of self-objectification than weightlifters and controls, and higher levels of body dissatisfaction and drive for muscularity than controls. Overall, the relationships between self-objectification and the outcome variables, and self-surveillance and the outcome variables, were mediated by appearance anxiety. CONCLUSIONS Bodybuilding is associated with outcomes that suggest it may not result in greater overall health for men. It was concluded that objectification theory provides a useful framework for examining body-image differences in men.

Predictors of treatment outcome in individuals with eating disorders: A systematic review and meta-analysis: PREDICTORS OF TREATMENT OUTCOME IN INDIVIDUALS WITH EATING DISORDERS

OBJECTIVE Understanding the factors that predict a favourable outcome following specialist treatment for an eating disorder may assist in improving treatment efficacy, and in developing novel interventions. This review and meta-analysis examined predictors of treatment outcome and drop-out. METHOD A literature search was conducted to identify research investigating predictors of outcome in individuals treated for an eating disorder. We organized predictors first by statistical type (simple, meditational, and moderational), and then by category. Average weighted mean effect sizes (r) were calculated for each category of predictor. RESULTS The most robust predictor of outcome at both end of treatment (EoT) and follow-up was the meditational mechanism of greater symptom change early during treatment. Simple baseline predictors associated with better outcomes at both EoT and follow-up included higher BMI, fewer binge/purge behaviors, greater motivation to recover, lower depression, lower shape/weight concern, fewer comorbidities, better interpersonal functioning and fewer familial problems. Drop-out was predicted by more binge/purge behaviors and lower motivation to recover. For most predictors, there was large interstudy variability in effect sizes, and outcomes were operationalized in different ways. There were generally insufficient studies to allow analysis of predictors by eating disorder subtype or treatment type. DISCUSSION To ensure that this area continues to develop with robust and clinically relevant findings, future studies should adopt a consistent definition of outcome and continue to examine complex multivariate predictor models. Growth in this area will allow for stronger conclusions to be drawn about the prediction of outcome for specific diagnoses and treatment types.

Motivational Change in an Inpatient Anorexia Nervosa Population and Implications for Treatment

Objective: The relationship between motivation and recovery in anorexia nervosa has received increased attention in the research literature although few controlled investigations of increasing motivation in this population exist. Three questions were therefore examined in an inpatient anorexia nervosa population: (i) does baseline motivation predict change in eating pathology; (ii) does change in motivation predict change in eating pathology; and (iii) can we increase motivation to recover in this group? Method: Inpatients (n=47) in a specialist weight disorder unit with a mean age of 21.85 years (SD=5.37) were randomly allocated to receive four sessions of motivational interviewing with a novice therapist in addition to treatment as usual (n=22) or treatment as usual alone (n=25). Assessment of eating pathology and motivation to recover was conducted on three occasions: at admission (baseline), and at 2- and 6 week follow up. Eating pathology was assessed using the Eating Disorder Examination and self-reported motivation was assessed using the Anorexia Nervosa Stages of Change Questionnaire and six Likert scales. Results: Higher baseline motivation across five of the seven measures predicted significant decreases in eating pathology, and increased Anorexia Nervosa Stages of Change Questionnaire scores between baseline and 2 week follow up predicted significant improvement in eating pathology between baseline and 6 week follow up. Significantly more patients were lost to follow up from the treatment as usual compared to the motivational interviewing group. More patients in the motivational interviewing condition moved from low readiness to change at baseline to high readiness to change at 2 and 6 week follow up. Conclusions: Motivation is an important predictor of change in anorexia nervosa and preliminary evidence is provided that motivation can be improved in this population. Further investigations, however, of ways of improving motivation in this population need to be conducted, along with the impact of motivational changes on treatment outcome.

Factors Influencing Attendance at Cardiac Rehabilitation among Coronary Heart Disease Patients

OBJECTIVE: The current study examined predictors of, and reasons for, non-attendance at cardiac rehabilitation (CR) among coronary heart disease patients. METHODS: Measures of demographics, surgical procedures, cardiac risk factors, cardiac damage, and psychological variables (depression, trauma, anxiety and alexithymia) were obtained at baseline in 85 coronary heart disease patients, of whom 34 (40%) attended CR. Patients not attending CR reported reasons for their non-attendance. RESULTS: Men who had a sedentary lifestyle or were obese were significantly more likely to attend CR. Women were significantly more likely to attend CR if they had a partner. Patients reported numerous personal reasons for their non-attendance, some of which reflect a dislike of a group format. CONCLUSION: The results suggest the presence of obstacles to attendance and completion of CR that may differ for men and women. Innovative approaches are needed to encourage participation, including the development and evaluation of alternative formats of CR.

Shared temperament risk factors for anorexia nervosa: A twin study.

Objective: To answer two questions about the nature of the relationship between anorexia nervosa (AN) and dimensional temperament traits: Which traits are comorbid with AN? Which traits share transmitted liabilities with AN? Methods: A community sample of 1002 same-gender female twins was selected with respect to participation in two earlier waves of data collection. Measures of eating disorder diagnoses and features were ascertained through interview and continuous measures of temperament were ascertained from self-report measures. Results: Four temperaments were comorbid with AN, namely, higher levels of perfectionism (concern over mistakes, personal standards, doubt about actions), and higher need for organization. Comparison between the female co-twins of AN probands and controls (who had never had an eating disorder) showed that the former group reported higher levels of personal standards, organization, and reward dependence. The association between personal standards and reward dependence remained when controlling for the temperament of the proband or control in monozygotic twins. Conclusions: The evidence overall supports the suggestion that AN may represent the expression of a common underlying familial liability to a temperament style that reflects a striving for perfectionism, a need for order, and a sensitivity to praise and reward. The nature of the shared risk factors is likely to be, in part, genetic. AN = anorexia nervosa; MZ = monozygotic; ATR = Australian Twin Registry; DZ = dizygotic; EDE = Eating Disorder Examination; CI = confidence interval; OR = odds ratio.