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Tylka TL, Maïano C, Fuller-Tyszkiewicz M, Linardon J, Burnette CB, Todd J, Swami V. The Intuitive Eating Scale-3: Development and psychometric evaluation. Appetite 2024; 199:107407. [PMID: 38729580 DOI: 10.1016/j.appet.2024.107407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/30/2024] [Accepted: 05/07/2024] [Indexed: 05/12/2024]
Abstract
Intuitive eating has been found to protect against disordered eating and preserve well-being. Yet, there are methodological (length), conceptual (inconsideration of medical, value-based, and access-related reasons for food consumption), and psychometric (item wording) concerns with its most common measure, the Intuitive Eating Scale-2 (IES-2). To address these concerns, we developed the IES-3 and investigated its psychometric properties with U.S. community adults. Across three online studies, we evaluated the IES-3's factorial validity using exploratory factor analysis (EFA; Study 1; N = 957; Mage = 36.30), as well as confirmatory factor analysis (CFA), exploratory structural equation modeling (ESEM), bifactor-CFA, and bifactor-ESEM (Study 2; N = 1152; Mage = 40.95), and cross-validated the optimal model (Study 3; N = 884; Mage = 38.54). We examined measurement invariance across samples and time, differential item functioning (age, body mass index [BMI], gender), composite reliability, and validity. Study 1 revealed a 12-item, 4-factor structure (unconditional permission to eat, eating for physical reasons, reliance on hunger and satiety cues, body-food choice congruence). In Study 2, a bifactor-ESEM model with a global intuitive eating factor and four specific factors best fit the data, which was temporally stable across three weeks. This model also had good fit in Study 3 and, across Studies 2 and 3, and was fully invariant and lacked measurement bias in terms of age, gender, and BMI. Associations between latent IES-3 factors and age, gender, and BMI were invariant across Studies 2 and 3. Composite reliability and validity (relationships with disordered eating, embodiment, body image, well-being, and distress; negligible relationship with impression management) of the retained model were also supported. The 12-item IES-3 demonstrates strong psychometric properties in U.S. community adults. Research is now needed using the IES-3 in other cultural contexts and social identity groups.
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Affiliation(s)
- Tracy L Tylka
- Department of Psychology, The Ohio State University, Columbus, OH, USA.
| | - Christophe Maïano
- Laboratory of Cyberpsychology, Department of Psychoeducation and Psychology, Université Du Québec en Outaouais, Saint-Jérôme, Canada; Substantive-Methodological Synergy Research Laboratory, Department of Psychology, Concordia University, Montreal, Canada
| | | | - Jake Linardon
- School of Psychology, Deakin University, Geelong, Victoria, Australia
| | - C Blair Burnette
- Department of Psychology, Michigan State University, East Lansing, MI, USA
| | - Jennifer Todd
- School of Psychology, Sport, and Sensory Sciences, Anglia Ruskin University, Cambridge, United Kingdom; Centre for Psychological Medicine, Perdana University, Kuala Lumpur, Malaysia
| | - Viren Swami
- School of Psychology, Sport, and Sensory Sciences, Anglia Ruskin University, Cambridge, United Kingdom; Centre for Psychological Medicine, Perdana University, Kuala Lumpur, Malaysia
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Ji F, Sun H, Barnhart WR, Cui T, Cui S, Zhang J, He J. Psychometric network analysis of the Intuitive Eating Scale-2 in Chinese general adults. J Clin Psychol 2024; 80:1098-1114. [PMID: 38321814 DOI: 10.1002/jclp.23657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 01/19/2024] [Accepted: 01/25/2024] [Indexed: 02/08/2024]
Abstract
The Intuitive Eating Scale-2 (IES-2) is a measure of intuitive eating behaviors that has been extensively validated, with traditional latent variable modeling approaches, in youth and adults from many different populations, including college students in China. However, there is still a lack of research on the psychometric properties of the IES-2 in adults from the Chinese general population. Moreover, psychometric network analysis, as a complement to traditional latent variable modeling approaches, has not been used for examining the psychometric properties of the IES-2. Thus, the present study used a psychometric network approach to evaluate the psychometric properties of the IES-2 in Chinese adults from the general population. A sample of 700 Chinese general adults (50% women; Mage = 31.13 years, SD = 9.19) recruited online were included in the present study. Psychometric network analysis was performed. Exploratory graph analysis (EGA) identified four dimensions, which were well separated in the estimated network. The network structure showed excellent stability and metric measurement invariance (i.e., network loadings) across men and women. Furthermore, several items on the IES-2 were identified as key nodes in the network of the IES-2 that may be important for the development and maintenance of intuitive eating. For example, two items (i.e., "I trust my body to tell me when to eat," and "I trust my body to tell me when to stop eating") related to reliance on body cues were the most impactful nodes in the complete network. The findings of our study provide a greater understanding of the IES-2 from the perspective of network analysis and have implications for applications of intuitive eating interventions for general populations.
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Affiliation(s)
- Feng Ji
- Department of Applied Psychology and Human Development, University of Toronto, Toronto, Ontario, Canada
| | - Hongyi Sun
- School of Psychology, University of Southampton, Southampton, UK
| | - Wesley R Barnhart
- Department of Psychology, Bowling Green State University, Bowling Green, Ohio, USA
| | - Tianxiang Cui
- Department of Psychology, University of Macau, Taipa, Macau, China
| | - Shuqi Cui
- Division of Applied Psychology, School of Humanities and Social Science, The Chinese University of Hong Kong, Shenzhen, Guangdong, China
| | - Jihong Zhang
- Department of Counseling, Leadership and Research Methods, University of Arkansas, Fayetteville, Arkansas, USA
| | - Jinbo He
- Division of Applied Psychology, School of Humanities and Social Science, The Chinese University of Hong Kong, Shenzhen, Guangdong, China
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Longhurst P, Burnette CB. Challenges and opportunities for conceptualizing intuitive eating in autistic people. Int J Eat Disord 2023; 56:2189-2199. [PMID: 37794653 PMCID: PMC10840701 DOI: 10.1002/eat.24057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 10/06/2023]
Abstract
Although intuitive eating (IE) has become an increasingly adopted intervention target, current conceptualisations of IE have yet to pivot away from (neuro)normative physiology and phenomenology. Autistic individuals commonly report disordered eating behaviours and/or poorer well-being but appear to benefit from adaptive interventions using an affirmative approach. This article uses autism as a case example to summarise challenges related to IE's prevailing conceptualisation, before proposing how future research and current practice can be extended to the autistic population. Scholars are encouraged to evaluate the full 10-principal IE framework while utilising a participatory-led approach. We argue that research using a mixed methods design is urgently needed to comprehensively explore the (re)conceptualisation of IE in autistic people. While IE shows promise for producing positive outcomes in the autistic population, we discuss the potential challenges for research and practice due to its current emphasis on accurate interoception, emotional awareness and processing, and executive functioning. This suggests the need for research and practice to integrate autistic needs and experiences into future developments with an affirmative approach. Public Significance: IE is an effective intervention for reducing disordered eating behaviours. Autistic individuals commonly present disordered eating behaviours and have unique nutritional needs which often require intervention. However, there is limited understanding of IE among the autistic population. Research-informed definitions involving autistic perspectives will support translating the IE framework to this underrepresented population.
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Affiliation(s)
- Phaedra Longhurst
- School of Psychology and Sport Science, Anglia Ruskin University, Cambridge, UK
| | - C Blair Burnette
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA
- Department of Psychology, Michigan State University, East Lansing, Michigan, USA
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Loor JM, Mullins CR, Smith JE. Examination of ecological validity of intuitive eating. Appetite 2023; 188:106761. [PMID: 37421977 DOI: 10.1016/j.appet.2023.106761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 06/14/2023] [Accepted: 06/25/2023] [Indexed: 07/10/2023]
Abstract
BACKGROUND Intuitive eating, which involves following internal cues of hunger and satiety to guide eating choices, would be better understood if studied at the individual momentary level instead of globally or cross-sectionally. The current study employed ecological momentary assessment (EMA) to examine the ecological validity of a popular intuitive eating measure, the Intuitive Eating Scale (IES-2). METHOD College males and females completed a baseline assessment of trait levels of intuitive eating as measured by the IES-2. Participants then followed a seven-day EMA protocol where they completed brief smart phone assessments about intuitive eating and related constructs while in their natural daily environments. Participants were asked to complete recordings before and after eating about their state level of intuitive eating at that moment. RESULTS Among 104 participants, 87.5% were female, mean age was 24.3, and mean BMI was 26.3. Baseline trait level intuitive eating was significantly correlated with state level intuitive eating reported across EMA recordings, with some evidence suggesting that correlations were stronger before eating compared to after eating. Intuitive eating generally was related to less negative affect, fewer eating restrictions, and more anticipated taste enjoyment before eating, as well as less guilt and regret after eating. DISCUSSION Individuals who reported high trait levels of intuitive eating also reported following their internal cues for hunger and satiety and had less guilt, regret, and negative affect surrounding eating in their naturalistic environments, thereby supporting the ecological validity of the IES-2.
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Affiliation(s)
- Jamie M Loor
- University of New Mexico Health Sciences Center, MSC08-4506, Albuquerque, NM 87131-0001, United States.
| | - Chloe R Mullins
- University of New Mexico, Department of Psychology, MSC03-2220, Albuquerque, NM 87131-0001, United States.
| | - Jane Ellen Smith
- University of New Mexico, Department of Psychology, MSC03-2220, Albuquerque, NM 87131-0001, United States.
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Fekih-Romdhane F, Jiang C, Obeid S, Malaeb D, Chammas N, Fawaz M, Soufia M, Meng R, Hallit S. Psychometric properties of the Arabic version of the Intuitive Eating Scale-2 (IES-2) in a sample of community adults. J Eat Disord 2023; 11:53. [PMID: 37005688 PMCID: PMC10067204 DOI: 10.1186/s40337-023-00782-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 03/29/2023] [Indexed: 04/04/2023] Open
Abstract
BACKGROUND There is a growing attention on intuitive eating (IE) styles in the Western world that has not yet reached Arab countries, which is likely due to the lack of psychometrically sound measures of the IE construct for Arabic-speaking people. The current study aims to examine the psychometric properties of an Arabic translation of the most widely used measure of IE-the Intuitive Eating Scale-2 (IES-2), in an Arabic-speaking community population from Lebanon. METHODS Two samples of Arabic-speaking community adults from Lebanon (sample 1: n = 359, 59.9% females, age 22.75 ± 7.04 years; sample 2: n = 444, 72.7% females, age 27.25 ± 9.53 years) were recruited through online convenience sampling. The translation and back-translation method was applied to the IES-2 for linguistic validation. Factorial validity was investigated using an Exploratory Factor Analysis & Confirmatory Factor Analysis strategy. Composite reliability and sex invariance were examined. We also tested convergent and criterion-related validity through correlations with other theoretically plausible constructs. RESULTS Nine out of the original 23 items were removed because they either loaded below 0.40 and/or cross-loaded too highly on multiple factors. This resulted in four domains (Unconditional Permission to Eat, Eating for Physical Rather than Emotional Reasons, Reliance on Hunger and Satiety Cues, and Body-Food Choice Congruence) and 14 items retained. Internal reliability estimates were excellent, with McDonald's ω values ranging from 0.828 to 0.923 for the four factors. Multigroup analysis established configural, thresholds, metric, scalar, strict invariance across gender. Finally, higher IES-2 total scores were significantly correlated with lower body dissatisfaction scores and more positive eating attitudes, thus attesting to convergent and criterion-related validity of the scale. CONCLUSIONS The current findings provide preliminary evidence for the appropriate psychometric qualities of the Arabic 14-item, four-factor structure IES-2; thereby supporting its use at least among Arabic-speaking community adults.
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Affiliation(s)
- Feten Fekih-Romdhane
- The Tunisian Center of Early Intervention in Psychosis, Department of Psychiatry “Ibn Omrane”, Razi Hospital, 2010 Manouba, Tunisia
- Faculty of Medicine of Tunis, Tunis El Manar University, Tunis, Tunisia
| | - Chen Jiang
- School of Public Health, Hangzhou Normal University, Hangzhou, 311121 People’s Republic of China
| | - Sahar Obeid
- Social and Education Sciences Department, School of Arts and Sciences, Lebanese American University, Jbeil, Lebanon
| | - Diana Malaeb
- College of Pharmacy, Gulf Medical University, Ajman, United Arab Emirates
- School of Pharmacy, Lebanese International University, Beirut, Lebanon
| | - Nancy Chammas
- School of Medicine and Medical Sciences, Holy Spirit University of Kaslik, P.O. Box 446, Jounieh, Lebanon
| | - Mirna Fawaz
- Faculty of Health Sciences, Beirut Arab University, Tareek Al Jadida, Afeef Al Tiba, Beirut, 1105 Lebanon
| | - Michel Soufia
- School of Medicine and Medical Sciences, Holy Spirit University of Kaslik, P.O. Box 446, Jounieh, Lebanon
| | - Runtang Meng
- School of Public Health, Hangzhou Normal University, Hangzhou, 311121 People’s Republic of China
- Engineering Research Center of Mobile Health Management System, Ministry of Education, Hangzhou, 311121 People’s Republic of China
| | - Souheil Hallit
- School of Medicine and Medical Sciences, Holy Spirit University of Kaslik, P.O. Box 446, Jounieh, Lebanon
- Psychology Department, College of Humanities, Effat University, Jeddah 21478, Saudi Arabia
- Research Department, Psychiatric Hospital of the Cross, Jal Eddib, Lebanon
- Applied Science Research Center, Applied Science Private University, Amman, Jordan
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Psychometric properties of a Greek translation of the Intuitive Eating Scale-2 (IES-2) in adults from Cyprus. Body Image 2022; 43:348-361. [PMID: 36272259 DOI: 10.1016/j.bodyim.2022.09.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022]
Abstract
The construct of intuitive eating is commonly assessed using the 23-item, 4-factor Intuitive Eating Scale-2 (IES-2; Tylka & Kroon Van Diest, 2013). In this study, we assessed the psychometric properties of a novel Greek translation of the IES-2 in adults from Cyprus. In Study 1 (N = 626), an exploratory factor analysis indicated that the IES-2 should be conceptualized as consisting of six factors that showed complete invariance across women and men. Study 2 (N = 793), using exploratory structural equation modelling (ESEM) and beifactor analysis (B-ESEM), indicated that the 6-factor B-ESEM model had adequate fit and evidenced complete invariance across sex once the correlated uniqueness of negatively worded IES-2 items was accounted for. This final model evidenced adequate composite reliability, and a global G-factor evidenced adequate convergent, concurrent, and discriminant validity. In contrast, the IES-2 S-factors showed more equivocal patterns of validity, with some S-factors showing less-than-adequate associations with body image variables, self-esteem, symptoms of disordered eating, and fruit and vegetable intake. In general, these results provide satisfactory evidence of the psychometric properties of the Greek IES-2 in adults from Cyprus, but also suggest that models of IES-2 scores may vary across national or cultural contexts.
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Babbott KM, Mitchison D, Basten C, Thornton C, Hay P, Byrne S, Goldstein M, Heruc G, van der Werf B, Consedine NS, Roberts M. Intuitive Eating Scale-2: psychometric properties and clinical norms among individuals seeking treatment for an eating disorder in private practice. Eat Weight Disord 2022; 27:1821-1833. [PMID: 34797555 DOI: 10.1007/s40519-021-01326-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 10/20/2021] [Indexed: 11/25/2022] Open
Abstract
PURPOSE Intuitive Eating (IE) is an approach to eating designed to facilitate a positive relationship with food. Its use in clinical settings and in the community is rapidly growing in popularity. The Intuitive Eating Scale 2 (IES-2) is a widely used measure that indexes intuitive eating motivations and behaviour, however evidence of its validity in populations with clinical eating disorders remains scarce. The objective of the proposed study was thus to evaluate the factor structure of the IES-2 in a large sample of individuals seeking treatment for eating disorders in private practice. METHODS Data collected from 569 women and men aged 12-68 years seeking treatment for an eating disorder in one of eight specialist private outpatient eating disorder clinics were examined using confirmatory factor analysis (CFA). Relationships between IES-2 scores and measures of psychopathology were also examined. RESULTS Results were relatively consistent with the purported four-factor structure of the IES-2. The measure displayed strong construct validity and good internal consistency. Scores on the IES-2 were inversely associated with scores of depression, anxiety, and disordered eating, providing evidence for divergent validity of the measure. Clinical norms are provided for anorexia nervosa (AN) spectrum disorders and bulimia nervosa (BN) spectrum disorders, as well as for the clinical sample as a whole. CONCLUSION Findings suggest that the IES-2 may be an appropriate measure for evaluating behaviours relating to IE in community outpatient eating disorder settings, and provide further evidence for the association between IE and positive health outcomes. LEVEL OF EVIDENCE III, evidence obtained from well-designed cohort or case-control analytic studies.
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Affiliation(s)
- Katie M Babbott
- General Practice and Primary Healthcare, School of Population Health, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand.
| | - Deborah Mitchison
- Translational Health Research Institute, School of Medicine, Western Sydney University, Sydney, Australia
- Department of Psychology, Macquarie University, Sydney, Australia
| | - Chris Basten
- Department of Psychology, Macquarie University, Sydney, Australia
| | | | - Phillipa Hay
- School of Medicine, Western Sydney University, Campbelltown, Australia
| | - Sue Byrne
- University of Western Australia, Perth, Australia
| | - Mandy Goldstein
- Mandy Goldstein Psychology, Sydney, Australia
- School of Medicine, Western Sydney University, Campbelltown, Australia
| | - Gabriella Heruc
- School of Medicine, Western Sydney University, Campbelltown, Australia
- Appetite for Change, Sydney, Australia
| | - Bert van der Werf
- Department of Biostatistics, University of Auckland, Auckland, New Zealand
| | - Nathan S Consedine
- Department of Psychological Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Marion Roberts
- General Practice and Primary Healthcare, School of Population Health, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
- Nurture Psychology, Auckland, New Zealand
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Swami V, Maïano C, Furnham A, Robinson C. The intuitive eating scale-2: re-evaluating its factor structure using a bifactor exploratory structural equation modelling framework. Eat Weight Disord 2022; 27:1349-1357. [PMID: 34292529 DOI: 10.1007/s40519-021-01271-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 07/10/2021] [Indexed: 12/29/2022] Open
Abstract
PURPOSE Previous studies examining the appropriateness of the 4-factor model of intuitive eating scale-2 (IES-2) scores have returned equivocal results, which may reflect methodological limitations in the way IES-2 scores are modelled. Here, we applied a bifactor-exploratory structural equation modelling (B-ESEM) framework to better understand IES-2 multidimensionality. METHODS A total of 603 participants from the United States completed the IES-2, alongside measures of body appreciation, body acceptance from others, and self-esteem. Our analyses compared the fit of various hypothesised models of IES-2 scores. RESULTS Models of IES-2 scores based on confirmatory factor analysis (CFA) uniformly showed poor fit. ESEM models showed superior fit to CFA representations and a B-ESEM model showed improved fit over higher-order CFA and B-CFA representations of IES-2 scores. The optimal model was a B-ESEM model that accounted for, through correlated uniqueness (CU), the methodological artefact introduced by negatively-worded IES-2 items. This B-ESEM-CU model was fully invariant across gender and showed adequate construct validity. CONCLUSION The B-ESEM-CU framework appears well-suited to understand the multidimensionality of IES-2 scores. A model of IES-2 scores that yields a reliable latent indicator of global intuitive eating while allowing for simultaneous consideration of additional specific factors will likely provide more accurate accounting of the nature and outcomes of intuitive eating. LEVEL OF EVIDENCE Level III, cohort study.
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Affiliation(s)
- Viren Swami
- School of Psychology and Sport Science, Anglia Ruskin University, East Road, Cambridge, CB1 1PT, Cambridgeshire, UK.
- Centre for Psychological Medicine, Perdana University, Kuala Lumpur, Malaysia.
| | - Christophe Maïano
- Cyberpsychology Laboratory and Department of Psychoeducation and Psychology, Université du Québec en Outaouais, Saint-Jérôme, Canada
| | - Adrian Furnham
- Department of Leadership and Organizational Behaviour, Norwegian Business School, Oslo, Norway
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Ramalho SM, Saint-Maurice PF, Félix S, Conceição E. Intuitive eating Scale-2: Factor structure and associations with disordered eating, impulsivity and quality of life in adolescents with overweight/obesity. Eat Behav 2022; 44:101593. [PMID: 34954449 DOI: 10.1016/j.eatbeh.2021.101593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 09/18/2021] [Accepted: 12/08/2021] [Indexed: 11/03/2022]
Abstract
OBJECTIVE The Intuitive Eating Scale-2 (IES-2) has been shown to be a valid tool to assess the capability of eating in reaction to natural hunger/satiety cues. However, its factor structure seems to differ in function of cultural/socioeconomic backgrounds, and its psychometric properties among the adolescents with overweight/obesity (BMI-for-age percentile >85th) have not been examined yet. Thus, this study aims to 1) investigating the factorial structure/psychometric properties of IES-2 in adolescents with overweight/obesity; and 2) exploring the associations between impulsivity, quality of life disordered and intuitive eating. METHODS A total of 202 Portuguese adolescents (124 girls; 78 boys; 12-19 years) under weight-loss treatment with a mean BMI z-score of 2.41 (SD = 0.75) participated in this study. The IES-2 factor structure was explored by confirmatory factor analysis and bifactor models. Test-retest reliability analyses were performed over 6 months (n = 41) and associations between the variables under study were explored. RESULTS Confirmatory factor analyses with posthoc modifications resulted in a bifactor model with acceptable fit supporting one general factor (intuitive eating) and three specific factors (IES-2 subscales). The "Unconditional Permission to Eat" subscale could not be replicated in this sample. Test-retest reliability analyses suggested good temporal stability. Intuitive eating scores were negatively associated with grazing eating behavior and impulsivity (negative urgency) and positively linked to quality of life. CONCLUSIONS An adjusted version of IES-2 can be an appropriate measure for assessing intuitive eating levels in adolescents with overweight/obesity. Research on intuitive eating has the potential to enhance pediatric weight-loss interventions.
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Affiliation(s)
- Sofia M Ramalho
- Psychotherapy and Psychopathology Research Unit - Psychology Research Centre, School of Psychology, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal.
| | - Pedro F Saint-Maurice
- National Institutes of Health, National Cancer Institute, 9609 Medical Center Drive, Room- 6E572, Rockville, MD 20850, United States of America.
| | - Sílvia Félix
- Psychotherapy and Psychopathology Research Unit - Psychology Research Centre, School of Psychology, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal.
| | - Eva Conceição
- Psychotherapy and Psychopathology Research Unit - Psychology Research Centre, School of Psychology, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal.
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Román N, Rigó A, Gajdos P, Tóth-Király I, Urbán R. Intuitive eating in light of other eating styles and motives: Experiences with construct validity and the Hungarian adaptation of the Intuitive Eating Scale-2. Body Image 2021; 39:30-39. [PMID: 34171578 DOI: 10.1016/j.bodyim.2021.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 05/25/2021] [Accepted: 05/27/2021] [Indexed: 01/29/2023]
Abstract
Intuitive eating (IE), an adaptive eating approach, has been identified as a plausible positive determinant of physical and mental well-being. This cross-sectional survey study aimed to examine the construct validity of IE measured by the Intuitive Eating Scale-2 (IES-2). The conceptual network of different adaptive and maladaptive eating behaviors was also explored. Confirmatory factor analysis (CFA), measurement invariance testing, and correlation analyses were applied on the data from a sample of 732 Hungarian university students. Validating variables included several eating behavior styles (i.e., obesogenic eating behaviors, mindful eating [ME], and dieting practices) and motivational factors (i.e., autonomous, controlled, and amotivational sources of healthy eating, and internalization of the thin and muscular body ideals). The results of the CFA supported the original four-factor structure of the IES-2 without a global second-order factor. The scale exhibited measurement invariance on the scalar level across sexes and BMI categories. The IES-2 subscales showed adequate reliability. IE and ME were found to be positively related but conceptually distinct constructs. Autonomous motivation for healthy eating, restrained eating, and current dieting exhibited different yet meaningful associations to IE on the subscale level. Undertaking subscale-level analyses is recommended when using the IES-2.
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Affiliation(s)
- Nóra Román
- Doctoral School of Psychology, ELTE Eötvös Loránd University, Izabella utca 46, Budapest, H-1064, Hungary; Institute of Psychology, ELTE Eötvös Loránd University, Izabella utca 46, Budapest, H-1064, Hungary.
| | - Adrien Rigó
- Institute of Psychology, ELTE Eötvös Loránd University, Izabella utca 46, Budapest, H-1064, Hungary.
| | - Panna Gajdos
- Doctoral School of Psychology, ELTE Eötvös Loránd University, Izabella utca 46, Budapest, H-1064, Hungary; Institute of Psychology, ELTE Eötvös Loránd University, Izabella utca 46, Budapest, H-1064, Hungary.
| | - István Tóth-Király
- Department of Psychology, Concordia University, 7141 Sherbrooke W, Montreal, QC, H4B 1R6, Canada.
| | - Róbert Urbán
- Institute of Psychology, ELTE Eötvös Loránd University, Izabella utca 46, Budapest, H-1064, Hungary.
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Dimensionality and psychometric properties of an Italian translation of the Intuitive Eating Scale-2 (IES-2): An assessment using a bifactor exploratory structural equation modelling framework. Appetite 2021; 166:105588. [PMID: 34224761 DOI: 10.1016/j.appet.2021.105588] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/18/2021] [Accepted: 07/01/2021] [Indexed: 01/25/2023]
Abstract
The construct of intuitive eating is most often measured using the 23-item Intuitive Eating Scale-2 (IES-2), but previous studies have typically relied solely on confirmatory factor analysis (CFA) to understand IES-2 dimensionality. In contrast, a bifactor exploratory structural equation modelling (B-ESEM) framework offers a more realistic account of IES-2 multidimensionality. Here, we assessed the psychometric properties of a novel Italian translation using a combination of exploratory factor analysis and B-ESEM. A total of 950 adults completed the IES-2 alongside measures of positive body image, disordered eating, and psychological well-being. Results indicated that a 4-factor B-ESEM model had adequate fit to the data and that fit was improved when the correlated uniqueness of seven negatively worded IES-2 items was accounted for. This model of IES-2 scores showed adequate internal consistency and good test-retest reliability up to three weeks. Evidence of construct validity was good in terms of a global IES-2 factor, and broadly supported in terms of its specific-factors. These results highlight the utility of a B-ESEM framework for understanding the dimensionality of IES-2 scores and may help scholars better understand the extent to which the IES-2 adequately operationalises the construct of intuitive eating.
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Swami V, Todd J, Stieger S, Furnham A, Horne G, Tylka TL. Body acceptance by others: Refinement of the construct, and development and psychometric evaluation of a revised measure - The Body Acceptance by Others Scale-2. Body Image 2021; 36:238-253. [PMID: 33387962 DOI: 10.1016/j.bodyim.2020.11.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 11/16/2020] [Accepted: 11/16/2020] [Indexed: 02/06/2023]
Abstract
The Body Acceptance by Others Scale (BAOS) measures the degree to which individuals perceive body acceptance by others, but its factor structure is questionable. Here, we developed a revision of the BAOS (i.e., the BAOS-2) by designing novel items reflective of generalised perceptions of body acceptance by others. In three studies, we examined the psychometrics of the 13-item BAOS-2. Study 1, with United Kingdom adults (N = 601), led to the extraction of a unidimensional model of BAOS-2 scores and provided evidence of 4-week test-retest reliability. Study 2, with United Kingdom adults (N = 423), indicated that the unidimensional model of BAOS-2 scores had adequate fit and that scores were invariant across gender. Study 2 also provided evidence of convergent, construct, criterion, discriminant, and incremental validity. Study 3 cross-validated the fit of the unidimensional model in adults from the United State (N = 503) and provided evidence of invariance across gender and national group. Internal consistency coefficients of BAOS-2 scores were adequate across all three studies. There were no significant gender differences in BAOS-2 scores and a significant national difference had a negligible effect size. Thus, the BAOS-2 is a psychometrically-sound measure that can be utilised in future research.
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Affiliation(s)
- Viren Swami
- School of Psychology and Sport Science, Anglia Ruskin University, Cambridge, United Kingdom; Centre for Psychological Medicine, Perdana University, Kuala Lumpur, Malaysia.
| | - Jennifer Todd
- School of Psychology and Sport Science, Anglia Ruskin University, Cambridge, United Kingdom
| | - Stefan Stieger
- Department of Psychology and Psychodynamics, Karl Landsteiner University of Health Sciences, Krems an der Donau, Austria
| | - Adrian Furnham
- Department of Leadership and Organizational Behaviour, Norwegian Business School, Oslo, Norway
| | - George Horne
- Department of Psychology, University of Bath, Bath, United Kingdom
| | - Tracy L Tylka
- Department of Psychology, The Ohio State University, Columbus, OH, United States
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13
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Vintilă M, Todd J, Goian C, Tudorel O, Barbat CA, Swami V. The Romanian version of the Intuitive Eating Scale-2: Assessment of its psychometric properties and gender invariance in Romanian adults. Body Image 2020; 35:225-236. [PMID: 33157397 DOI: 10.1016/j.bodyim.2020.09.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 09/13/2020] [Accepted: 09/27/2020] [Indexed: 01/12/2023]
Abstract
The construct of intuitive eating is most often measured using the 23-item Intuitive Eating Scale-2 (IES-2). Here, we examined the psychometrics of a Romanian translation of the IES-2. Eight-hundred-and-thirty Romanian adults completed the IES-2 along with measures of positive body image, symptoms of disordered eating, and psychological well-being. Exploratory factor analyses (EFAs) with a split-half subsample (n = 420) indicated that IES-2 scores reduced to three factors in women and four in men, both of which diverged from the parent model. Confirmatory factor analysis with a second split-half sample (n = 410) indicated that the parent model had poor fit indices, whereas fit of the EFA-derived models were acceptable but not uniformly ideal. Scores on the 3-factor model - which had comparatively better fit of the models tested - had adequate internal consistency and evidenced scalar invariance across gender. However, evidence of test-retest reliability after four weeks (n = 205) was poor and evidence of construct validity, assessed through correlations with additional measures included in the survey, was weak at best. Based on these results, we question the degree to which the construct of intuitive eating can be applied to nations undergoing nutrition transitions.
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Affiliation(s)
- Mona Vintilă
- Department of Psychology, West University of Timișoara, Timișoara, Romania
| | - Jennifer Todd
- School of Psychology and Sport Science, Anglia Ruskin University, Cambridge, United Kingdom
| | - Cosmin Goian
- Department of Social Work, West University of Timișoara, Timișoara, Romania
| | - Otilia Tudorel
- Department of Psychology, West University of Timișoara, Timișoara, Romania
| | - C A Barbat
- Department of Social Work, West University of Timișoara, Timișoara, Romania
| | - Viren Swami
- School of Psychology and Sport Science, Anglia Ruskin University, Cambridge, United Kingdom; Centre for Psychological Medicine, Perdana University, Serdang, Malaysia.
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14
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Strodl E, Markey C, Aimé A, Rodgers RF, Dion J, Coco GL, Gullo S, McCabe M, Mellor D, Granero-Gallegos A, Sicilia A, Castelnuovo G, Probst M, Maïano C, Manzoni GM, Begin C, Blackburn ME, Pietrabissa G, Alcaraz-Ibánez M, Hayami-Chisuwa N, He Q, Caltabiano ML, Fuller-Tyszkiewicz M. A cross-country examination of emotional eating, restrained eating and intuitive eating: Measurement Invariance across eight countries. Body Image 2020; 35:245-254. [PMID: 33147542 DOI: 10.1016/j.bodyim.2020.09.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 08/28/2020] [Accepted: 09/30/2020] [Indexed: 01/19/2023]
Abstract
This study examined the measurement invariance of three scales that assessed emotional eating, restrained eating, and intuitive eating across eight countries (Australia, Belgium, Canada, China, Italy, Japan, Spain and the United States) in order to determine their suitability for cross-country body image research. A total of 6272 young adults took part in this study. Participants completed an online survey including the Emotional Eating subscale of the Three Factor Eating Questionnaire-Revised 21, the Restraint subscale of the Eating Disorder Examination Questionnaire, and the Reliance on Hunger and Satiety Cues subscale of The Intuitive Eating Scale-2. Multi-group confirmatory factor analysis was used to evaluate potential cross-country differences in functioning of the measures. Partial invariance for all three scales was found, with only minor levels of non-invariance identified. Multiple indicator multiple cause models identified BMI and gender as potential influences on scores for these measures. Sources of invariance across groups are discussed, as well as implications for further substantive research across countries involving these measures.
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Affiliation(s)
- Esben Strodl
- School of Psychology and Counselling, Queensland University of Technology, Victoria Park Rd, Kelvin Grove, Queensland, 4059, Australia.
| | - Charlotte Markey
- Department of Psychology, Health Sciences Centre, Rutgers University, Camden, NJ 08102, USA.
| | - Annie Aimé
- Department of Psychoeducation and Psychology, Université du Québec en Outaouais, Saint-Jérôme (Québec), Canada.
| | - Rachel F Rodgers
- APPEAR, Department of Applied Psychology, Northeastern University, Boston, MA, USA; Department of Psychiatric Emergency & Acute Care, Lapeyronie Hospital, CHRU Montpellier, France.
| | - Jacinthe Dion
- Department of Health Sciences, Université du Quebec a Chicoutimi, 555, boul. De l'universite, Chicoutimi, Quebec, G7H 2BI, Canada.
| | - Gianluca Lo Coco
- Department of Psychology, Educational Science and Human Movement, University of Palermo, Viale delle Scienze, edificio 15 Palermo 90128, Italy.
| | - Salvatore Gullo
- Department of Psychology, Educational Science and Human Movement, University of Palermo, Viale delle Scienze, edificio 15 Palermo 90128, Italy.
| | - Marita McCabe
- School of Health Sciences, Swinburne University, Burwood Road, Hawthorn, 3122, Australia.
| | - David Mellor
- Deakin University, 1 Gheringhap Street, Geelong, Victoria, 3220, Australia.
| | - Antonio Granero-Gallegos
- Health Research Centre and Department of Education, University of Almería, Ctra de Sacramento, s/n, 04120 Almería, Spain.
| | - Alvaro Sicilia
- Health Research Centre and Department of Education, University of Almería, Ctra de Sacramento, s/n, 04120 Almería, Spain.
| | - Gianluca Castelnuovo
- Istituto Auxologico Italiano, IRCCS, San Giuseppe Hospital, Strada Cadorna 90, 28824, Oggebbio (VB), Italy; Department of Psychology, Catholic University of Milan, Largo Agostino Gemelli, 1, 20123, Milan, Italy.
| | - Michel Probst
- Department of Rehabilitation Sciences, Katholieke Universiteit Leuven, O&N4Herestraat 49, 3000, Leuven, Belgium.
| | - Christophe Maïano
- Department of Psychoeducation and Psychology, Université du Québec en Outaouais, Saint-Jérôme, Canada.
| | - Gian Mauro Manzoni
- Istituto Auxologico Italiano, IRCCS, San Giuseppe Hospital, Strada Cadorna 90, 28824, Oggebbio (VB), Italy; Department of Psychology, eCampus University, Via Isimbardi, 10, 22060, Novedrate (CO), Italy.
| | - Catherine Begin
- School of Psychology, Université Laval, 2325 Allee des Bibliotheques, Quebec, GIV OA6, Canada.
| | - Marie-Eve Blackburn
- ECOBES-Research and Transfer, Cegep de Jonquiere, 2505, Saint-Hubert Street, Jonquiere, Quebec, Canada.
| | - Giada Pietrabissa
- Istituto Auxologico Italiano, IRCCS, San Giuseppe Hospital, Strada Cadorna 90, 28824, Oggebbio (VB), Italy; Department of Psychology, Catholic University of Milan, Largo Agostino Gemelli, 1, 20123, Milan, Italy.
| | - Manuel Alcaraz-Ibánez
- Health Research Centre and Department of Education, University of Almería, Ctra de Sacramento, s/n, 04120 Almería, Spain.
| | - Naomi Hayami-Chisuwa
- Graduate School of Human Life Sciences, Osaka City University, 3-3-138 Sugimoto Sumiyoshi-ku, Osaka, 558-8585, Japan.
| | - Qiqiang He
- School of Health Sciences, Wuhan University, PR China.
| | - Marie L Caltabiano
- School of Psychology, James Cook University, McGregor Road, Smithfield, Queensland, 4870, Australia.
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Swami V, Todd J, Zahari HS, Mohd Khatib NA, Toh EKL, Barron D. Dimensional structure, psychometric properties, and sex and ethnic invariance of a Bahasa Malaysia (Malay) translation of the Intuitive Eating Scale-2 (IES-2). Body Image 2020; 32:167-179. [PMID: 31981992 DOI: 10.1016/j.bodyim.2020.01.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 01/07/2023]
Abstract
The Intuitive Eating Scale-2 (IES-2; Tylka & Kroon Van Diest, 2013) is a widely-used measure of facets of intuitive eating. We examined the psychometric properties of a Bahasa Malaysia (Malay) translation of the IES-2 in a sample of Malaysian Malay and Chinese adults (N = 921). Participants completed a Malay translation of the IES-2 along with demographic items and measures of psychological well-being, positive and negative body image, and internalisation of appearance ideals. Exploratory factor analyses (EFAs) with Malay subsamples indicated that IES-2 scores reduced to 4 factors in women and 3 in men, both of which diverged from the parent model. Confirmatory factor analysis failed to confirm the parent 4-factor model, and indices for the EFA-derived models were acceptable but not ideal. Of the models tested, the EFA-derived 3-factor model had the best fit indices. Scores on this model had adequate internal consistency and were invariant across sex and ethnicity, but between-group differences in subscale scores were non-significant or negligible. Evidence of the construct validity of Malay IES-2 scores was mixed, particularly in men. These results lead us to question the degree to which intuitive eating as a construct is applicable to Malaysian populations specifically and non-Western populations generally.
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Affiliation(s)
- Viren Swami
- Division of Psychology, School of Psychology and Sport Science, Anglia Ruskin University, Cambridge, UK; Centre for Psychological Medicine, Perdana University, Serdang, Malaysia.
| | - Jennifer Todd
- Division of Psychology, School of Psychology and Sport Science, Anglia Ruskin University, Cambridge, UK
| | | | | | | | - David Barron
- Centre for Psychological Medicine, Perdana University, Serdang, Malaysia
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