Body Image: a new method for the assessment
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The document discusses a new digital method for assessing body image in patients with eating disorders, including anorexia nervosa and bulimia nervosa. It details the use of a 'body image revealer' that quickly captures and simulates images, allowing subjects to evaluate their perceptions through various cognitive tasks. Results indicate significant differences in body image perceptions among different groups, suggesting potential for cross-cultural studies in body image distortion.
Body Image: a new method for the assessment
- 1. BODY IMAGE ASSESSMENT IN EATING DISORDER PATIENTS: testing a new digital method Emanuel Mian1, Johan Vanderlinden2, Michel Probst2, Guido Pieters2, Riccardo Dalle Grave1 1 Department of Eating and Weight Disorder. Villa Garda Hospital Italy 2 Eating Disorder Unit. St-Jozef Kortenberg Belgium
- 2. Body Image Disturbance Anorexia Nervosa Disturbance in the way in which one ’’s body weight or Disturbance in the way in which one s body weight or shape is experienced, undue influence of body shape is experienced, undue influence of body (AN) weight or shape on self evaluation, or denial of the weight or shape on self evaluation, or denial of the seriousness of current low body weight. seriousness of current low body weight. Bulimia Nervosa Self evaluation is unduly Self evaluation is unduly influenced by body shape influenced by body shape and weight. and weight. (BN) Eating disorders not Eating Disorder in which Eating Disorder in which otherwise specified someone has some but not someone has some but not all the symptoms all the symptoms of AN or BN of AN or BN (EDNOS)
- 3. Body Image Testing Silhouettes Tests Beebe et al. (1999) Smeets et al. (1999) Collins (1991)
- 4. Letosa-Porta et al. (2005) Gardner et al. (2005) Shafran and Fairburn (2003) Tovè e et al.(2003)
- 5. How Body Image Revealer works Subject’s Image •Easy Subministration Capture •Quickness •12 minutes between image capture and final output percentages •2-buttons “driven by subject” technique to modify images •Fully programmable for a frontal, side or back simulation Mian Emanuel (2006) permission for the use of this image required by Author Standard curves/simulation patterns SUBJECT STANDING 2,5 mt FAR FROM DIGITAL CAMERA and algorithm intervention for each subject • Cognitive Task How do you think you are? • Affective Task How do you feel you are? • Meta-Cognitive Task How do you think the others think you are? • Optative Task How do you want to look like?
- 6. CONTROL AN BN EDNOS GROUP (36) (10) (21) (34) 23 21 27 23 Age (+- 8) (+- 4) (+- 6) (+- 4) 17 22 19 19.2 BMI (+- 2) (+- 4) (+- 2) (+- 1) B.A.T. 50.8 56 44 17 total scores EDI 10.9 12.1 9 2.6 drive for thinness subscale EDI 13.4 16.3 12.5 4.1 body dissatisfaction subscale Scl-90-BIA-EDES-EAT26 were in the questionnaries we subministered to subjects
- 7. Case example Real Image no simulation How do you think others How do you think you really think you are? look like? (underweight) (overweight) Subject did not have clues or hints, and the starting distortion percentage was randomly set from +21% to -25%
- 8. Case example Real Image no simulation How do you think others How do you think you really think you are? look like? (underweight) (overweight) Follows the natural pattern fitting subject’s own body fat distribution Subject did not have clues or hints, and the starting distortion percentage was randomly set from +21% to -25%
- 9. Underweight Simulation Normal Overweight Simulation The Body Image Revealer can manage subject’s images without taking into account neutral objects using skin detection and boundary extrusion techniques . Correlations between retest session on 53 subjects with Bikini and with clothes, were used as a retest session and as a reliability analysis They ranged from r..79 to r.91 All correlations are significant at p<.05
- 10. Results Body Image Revealer AN BN EDNOS CONTROL p (36) (10) (21) (34) Cognitive +14% +16% +17% +5 % .0016 Task* Affective +20% +16% +19% +6% .005 Task* Meta- Cognitive +8% +13%** +7% +4% .02 Task Cognitive, Affective and Optative tasks correlated positively with EDI- * The difference between Italian and Belgian BN patients was +15% vs +4%, further investigations are on the way in order and all Body Image-related subscales of every DT and BD to evaluate crosscultural differences questionnaire we submitted but this is another story…