Translation and validation of a Chinese version of the Appearance Schemas Inventory-Revised in Chinese adults

The current study translated the Appearance Schemas Inventory-Revised (ASI-R) into Chinese (Mandarin) and examined its psychometric properties in Chinese adult women and men. Sample 1 included 400 women and 400 men to examine the factor structure of the ASI-R with exploratory factor analysis (EFA). Sample 2 involved 300 women and 300 men, and the EFA-derived factor structures in Sample 1 of the ASI-R were examined with exploratory structural equation modeling (ESEM), bifactor ESEM (B-ESEM), and bifactor ESEM with correlated uniqueness for negatively worded items (B-ESEM-CU) for both women and men. Results of the EFA identified a 4-factor model in women and a 2-factor model in men. The B-ESEM-CU consistently showed the best model fit. In the B-ESEM-CU, the general factor was well-defined, but the specific factors were not, supporting the use of the global factor to conceptualize the ASI-R for Chinese women and men. Evidence of adequate internal consistency, test-retest reliability, and construct validity of the global factor of the ASI-R was suggested in both women and men. Findings suggest the ASI-R is a useful instrument to measure body image investment in Chinese women and men, specifically using the B-ESEM-CU to understand the dimensionality of the ASI-R.

Measurement invariance of body image measures by age, gender, sexual orientation, race, weight status, and age: The U.S. Body Project I

Despite growing interest in comparing body image experiences across diverse groups, limited work has examined whether body image measures operate similarly across different populations, raising important questions about the appropriateness of comparing scale means across demographic groups. This study employed measurement invariance testing to evaluate whether such comparisons are appropriate with existing body image measures. Specifically, multi-group confirmatory factor analysis was conducted using a community sample of 11,620 men and women to test increasing levels of invariance (configural, metric, scalar) across five key demographic variables (age group, gender, sexual orientation, race, weight status) for five commonly used body image measures (the Sociocultural Attitudes Towards Appearance Questionnaire-4, the Body Surveillance subscale of the Objectified Body Consciousness Scale, the Appearance Evaluation and Overweight Preoccupation subscales of the Multidimensional Body-Self Relations Questionnaire, and the Body Image Quality of Life Inventory). Results provided evidence of scalar (i.e., strong) invariance for all five measures across age, gender, sexual orientation, race, and weight status groups, indicating that the latent factors captured by these measures have the same meaning across demographic groups. Findings therefore support the comparison of scale/subscale means across multiple demographic groups for these body image measures.

Demographic predictors of body image satisfaction: The U.S. Body Project I

We examined how gender, body mass, race, age, and sexual orientation were linked to appearance evaluation, overweight preoccupation, and body image-related quality of life among 11,620 adults recruited via Mechanical Turk. Men were less likely than women to report low appearance evaluation, high overweight preoccupation, negative effects of body image on their quality of life, being on a weight-loss diet, and trying to lose weight with crash diets/fasting. Racial differences were generally small, but greater appearance evaluation was reported by Black men versus other groups and Black women versus White women. Across all measures, gay and bisexual men reported poorer body image than heterosexual men, with only small effect sizes observed for sexual orientation differences among women. Body mass, but not age, was strongly associated with body image. The prevalence of poor body image highlights the need for interventions. On the positive side, half of men and women reported high appearance evaluation. Examination of this group could identify factors promoting positive body image.

An abbreviated 10-item, two-factor version of the Body Image Quality of Life Inventory (BIQLI-10): The U.S. Body Project I

The objective of this study was to re-examine the factor structure of the Body Image Quality of Life Inventory (BIQLI), a measure that quantifies perceived effects of one's body image on various aspects of psychosocial functioning. Data on the 19-item BIQLI from a community sample of 11,620 U.S. men and women were split into cross-validation samples and underwent exploratory and confirmatory factor analysis. An abbreviated 10-item, two-factor version of the BIQLI (BIQLI-10) was identified. The BIQLI-10 measures Social Relations & Psychological Well-Being with one subscale and Appearance & Body Management Activities with the other. Internal consistency was high for each subscale. The BIQLI-10 largely retained the convergent validity of the original 19-item BIQLI, as evidenced by nearly identical correlations with appearance evaluation, overweight preoccupation, body surveillance, appearance pressures, and appearance ideal internalization. Results also supported strong measurement invariance for the BIQLI-10 by age group, gender, sexual orientation, racial group, and weight status. Findings from this study suggest researchers may use this abbreviated version to increase nuance in the measurement of body image quality of life and reduce participant burden without compromising the psychometric integrity of the BIQLI. Further, results support the comparison of BIQLI-10 subscale scores across diverse groups.

Chinese Validation of the Multidimensional Attitude Scale toward Persons with Disabilities (MAS): Attitudes toward Autism Spectrum Disorders

The literature on tools of attitudes towards ASD was limited. This study is the first to examine the factor structure and psychometric properties of the multidimensional attitudes scale toward persons with disabilities (MAS) in a sample of Chinese college students (N = 1002, 32.10% males). Confirmatory factor analysis supported the G-MAS-R model's 4-factor structure: calm, negative affect, positive cognitions and behavioral avoidance. The results suggest that the Chinese version of the MAS has satisfactory internal consistency. Pearson correlation analysis showed that the MAS scores were significantly correlated with the Social Distance Scale and Autism Stigma and Knowledge Questionnaire scores. Overall, the findings indicate that the MAS is appropriate for assessing attitudes toward people with ASD in a Chinese context.

Body Image Quality of Life Inventory: cross-national study in college students from four different countries

PURPOSE

This study was aimed to examine the psychometric proprieties of the Body Image Quality of Life Inventory (BIQLI) among Brazilian, Portuguese, Mozambican, and Italian college students.

METHODS

A total of 1630 subjects (Brazilians = 446; Portuguese = 480, Mozambicans = 360, and Italians = 344) completed the Portuguese (Brazilian, Portuguese, and Mozambican students) and the Italian versions (Italian students) of the BIQLI for measuring the effects of body image on one's quality of life. Psychometric testing included confirmatory factor analysis (CFA), discriminant and convergent validity, internal consistency, and composite reliability. The cross-national invariance of the BIQLI was assessed by multi-group analysis using ΔCFI. Moreover, the global score of the BIQLI for all countries was calculated by an algorithm and compared using the Welch's ANOVA and the Games-Howell post-test (α = 5%).

RESULTS

CFA showed an inadequate fit of unifactorial model of the BIQLI. Therefore, an alternative model comprising nine first-order factors and one second-order factor was proposed and evaluated. This new model showed adequate fit in all samples, despite some limitations that were found with respect to its convergent and discriminant validity. The alternative BIQLI model was invariant among countries. Global scores for the influence of body image on quality of life were significantly different across countries, with the Italians presenting the lowest scores.

CONCLUSIONS

The BIQLI factorial model found in this study represents a reliable and valid alternative to its original structure for the assessment of the effect of body image on college students' perceived quality of life. This model must be further tested in other populations.

LEVEL OF EVIDENCE

Level V, cross-sectional descriptive study.

Appearance investment: The construct that changed the field of body image

In the mid-1990s, Thomas F. Cash developed the construct of appearance investment and an instrument to measure it, the Appearance Schemas Inventory (ASI). This was followed by a significant revision of this measure, the ASI-R. This instrument distinguished two dimensions to appearance investment, one referring to engagement in behaviours meant to improve appearance esthetics, and one referring to the importance of appearance for self-definition. The construct of appearance investment and its measurement gave rise to a new area of research that widened our understanding of body image beyond the ubiquitous construct of satisfaction. In this paper, we review the literature on appearance investment and offer conclusions based on the different study designs in which either the ASI or ASI-R were used. This is followed by general conclusions about the current state of the research on appearance investment, and future directions to improve our understanding of the factors contributing to the development of excessive investment in appearance.

Body image in patients with somatoform disorder

BACKGROUND

Although body-related problems are common in patients with somatoform disorder, research focusing on how patients with somatoform disorder perceive and evaluate their body is scarce. The present study compared differences in body image between patients with somatoform disorder and respondents from a general population sample. It also examined differences within the somatoform disorder group between men and women and between the diagnostic subgroups conversion disorder, pain disorder and undifferentiated somatoform disorder.

METHODS

Data were obtained from 657 patients (67.5% female) with somatoform disorder (DSM-IV-TR 300.7, 300.11, 300.81, 300.82) and 761 participants (58.6% female) from the general population. The Dresden Body Image Questionnaire (DBIQ) was used to assess body image in five domains: body acceptance, vitality, physical contact, sexual fulfilment, and self-aggrandizement. Confirmatory factor analysis and analyses of variance were performed. Since differences in age and sex were found between the somatoform disorder sample and the comparison sample, analyses were done with two samples of 560 patients with somatoform disorder and 351 individuals from the comparison sample matched on proportion of men and women and age.

RESULTS

Patients scored significantly lower than the comparison sample on all DBIQ domains. Men scored higher than women. Patients with conversion disorder scored significantly higher on vitality and body acceptance than patients with undifferentiated somatoform disorder and pain disorder.

CONCLUSIONS

The mostly large differences in body image between patients with somatoform disorder and the comparison sample as well as differences between diagnostic subgroups underline that body image is an important feature in patients with somatoform disorder. The results indicate the usefulness of assessing body image and treating negative body image in patients with somatoform or somatic symptom disorder.

Feasibility and Preliminary Efficacy of Tailored Yoga in Survivors of Head and Neck Cancer: A Pilot Study

Purpose: Treatment for head and neck cancer (HNC) results in long-term toxicities and increased physical and psychosocial survivor burden. There are a limited number of treatments for these late effects. Yoga postures, breath work, relaxation, and meditation, may improve these late effects. The purpose of this study was to examine the feasibility of a tailored yoga program in HNC survivors and obtain preliminary efficacy data. Methods: This was a randomized wait-list control study of yoga-naive HNC survivors who were >3 months post–cancer treatment. Baseline data were collected. Participants were randomized to either an 8-week hatha yoga intervention group or a wait-list group. Feasibility and efficacy data were collected. At 4 and 8 weeks, patients underwent a repeat assessment of health. Wait-list control group participants were offered the yoga program after data collection. Descriptive statistics evaluated feasibility. Mixed effects general linear models were used to generate estimates of the efficacy outcomes. Results: Seventy-three individuals were screened and 40 were eligible. All eligible individuals consented and enrolled. Five of the intervention group discontinued early and none in the wait-list control group. Feasibility was affirmed as participants were recruited and retained in the study, there were no adverse events, fidelity to protocol was demonstrated, and satisfaction rates were high. Efficacy measures indicated potential benefit for shoulder range of motion (d = 0.57-0.86, P < .05), pain (d = 0.67-0.90, P ≤ .005), and anxiety (d = 0.59, P = .015). Conclusion: A tailored hatha yoga program is feasible and potentially efficacious for HNC survivors. Preliminary data supports further investigation of yoga in this population is needed.

Psychometric properties of the Dresden Body Image Questionnaire: A multiple-group confirmatory factor analysis across sex and age in a Dutch non-clinical sample

BACKGROUND

Body image has implications for psychosocial functioning and quality of life and its disturbance is reported in a broad range of psychiatric disorders. In view of the lack of instruments in Dutch measuring body image as a broad concept, we set out to make an instrument available that reflects the multidimensional character of this construct by including more dimensions than physical appearance. The Dresden Körperbildfragebogen (DBIQ, Dresden Body Image Questionnaire) particularly served this purpose. The DBIQ consists of 35 items and five subscales: body acceptance, sexual fulfillment, physical contact, vitality, and self-aggrandizement. The main objective of the present study was to evaluate the psychometric properties of the Dutch translation of the Dresden Body Image Questionnaire (DBIQ-NL) in a non-clinical sample.

METHODS

The psychometric properties of the DBIQ-NL were examined in a non-clinical sample of 988 respondents aged between 18 and 65. We investigated the subscales' internal consistency and test-retest reliability. In order to establish construct validity we evaluated the association with a related construct, body cathexis, and with indices of self-esteem and psychological wellbeing. The factor structure of the DBIQ-NL was examined via confirmatory factor analysis (CFA). The equivalence of the measurement model across sex and age was evaluated by multiplegroup confirmatory factor analyses.

RESULTS

Confirmatory factor analyses showed a structure in accordance with the original scale, where model fit was improved significantly by moving one item to another subscale. Multiple group confirmatory factor analysis across sex and age demonstrated partial strong invariance. Internal consistency was good with little overlap between the subscales. Temporal reliability and construct validity were satisfactory.

CONCLUSION

Results indicate that the DBIQ-NL is a reliable and valid instrument for non-clinical subjects. This provides a sound basis for further investigation of the DBIQ-NL in a clinical sample.

Validity, reliability and responsiveness of the Body Image Quality of Life Inventory in patients treated for infective endocarditis

RATIONALE AND OBJECTIVES

Suffering through infective endocarditis (IE) can drastically alter a person's physical appearance, and body image-related concerns have been reported by patients. The extent and severity of the phenomenon has not previously been explored, as no quantitative measure has been validated in this patient population. The purpose of this study was thus to assess the validity, reliability and responsiveness of the Danish Body Image Quality of Life Inventory (BIQLI-DA) on patients treated for IE.

METHODS

We evaluated the psychometric properties of the BIQLI-DA on data obtained in the CopenHeart IE trial, which is a randomised clinical trial evaluating the effects of comprehensive cardiac rehabilitation for patients treated for IE. We administered the BIQLI-DA as part of data collection at baseline and 6 months. We examined the psychometric properties through correlations to other measures, including body mass index, Medical Outcome Short Form 36 and Hospital Anxiety and Depression Scale. In addition, we examined internal consistency on item and scale level and performed anova group-by-time interaction to test for responsiveness.

RESULTS AND STUDY LIMITATION

Participants were seventy patients with a mean age of 58 years and of which 83% were men. Results indicated convergent construct validity by confirming hypothesised associations to potentially related constructs. The BIQLI-DA was found to be highly internally consistent with a Cronbach's alpha of 0.96. Instrument responsiveness was indicated by a significant group-by-time interaction. Support for the validity of the BIQLI-DA might have been strengthened by a larger sample with more women. A more optimal design for testing responsiveness would possibly have allowed for clearer conclusions.

CONCLUSIONS

The BIQLI-DA may be applicable in healthcare research as it seems to be valid, reliable and responsive; however, evidence should be strengthened through further exploration of instrument performance, particularly regarding responsiveness.

Instrument translation and initial psychometric evaluation of the Danish Body Image Quality of Life Inventory

RATIONALE AND OBJECTIVES

Negative body perception has been reported in a number of patient populations. No instrument in Danish for measuring body image-related concerns has been available. Without such an instrument, understanding of the phenomenon in Danish-speaking populations is limited. The purpose of the study was thus to translate and validate a Danish version of the Body Image Quality of Life Inventory (BIQLI), in order to obtain a valid instrument applicable for healthcare research.

METHODS

The study consisted of two phases: (i) instrument adaptation, including forward and back translation, expert committee comparisons and cognitive interviewing, and (ii) empirical testing of the Danish version (BIQLI-DA) with subsequent psychometric evaluation. Hypothesised correlations to other measures, including body mass index (BMI), Medical Outcome Short Form-8 (SF-8), Patient Health Questionnaire-9 (PHQ-9), General Anxiety Disorder-7 and Symptom Check List-90-Revised (SCL-90-R^® ) were tested. In addition, exploratory factor structure analysis (EFA) and internal consistency on item and scale level were performed.

RESULTS AND STUDY LIMITATIONS

The adapted instrument was found to be semantically sound, yet concerns about face validity did arise through cognitive interviews. Danish college students (n = 189, 65 men, M_age = 21.1 years) participated in the piloting of the BIQLI-DA. Convergent construct validity was demonstrated through associations to related constructs. Exploratory factor analysis revealed a potential subscale structure. Finally, results showed a high internal consistency (Cronbach's alpha = 0.92). Support for the validity of the BIQLI-DA might have been strengthened by repeating cognitive interviews after layout alterations, by piloting the instrument on a larger sample.

CONCLUSIONS

This study demonstrated tentative support for the validity of the Danish Body Image Quality of Life (BIQLI-DA) and found the measure to be reliable in terms of internal consistency. Further exploration of response processes and construct validity is needed.

Body image investment in breast cancer patients undergoing reconstruction: taking a closer look at the Appearance Schemas Inventory-Revised

Breast cancer and its treatment can significantly affect a woman's body image. As such, it would be useful to understand the importance or value these patients place on their appearance. We evaluated the factor structure of the Appearance Schemas Inventory-Revised (ASI-R), a measure of body image investment, with a sample of 356 breast cancer patients undergoing mastectomy and breast reconstruction. Using confirmatory and exploratory factor analyses, we found that a three-factor model demonstrated an improvement in fit over the original two-factor structure of the ASI-R. These factors were named Appearance Self-Evaluation, Appearance Power/Control, and Appearance Standards and Behavior. The three aforementioned factors demonstrated acceptable internal consistency reliabilities. Our findings have implications for the use of the ASI-R in an oncology setting, specifically for breast cancer patients undergoing reconstruction.

Adaptation of the Participant Role Scale (PRS) in a Spanish youth sample: measurement invariance across gender and relationship with sociometric status

In recent years, bullying research has transitioned from investigating the characteristics of the bully-victim dyad to examining bullying as a group-level process, in which the majority of children play some kind of role. This study used a shortened adaptation of the Participant Role Scale (PRS) to identify these roles in a representative sample of 2,050 Spanish children aged 8 to 13 years. Confirmatory factor analysis revealed three different roles, indicating that the adapted scale remains a reliable way to distinguish the Bully, Defender, and Outsider roles. In addition, measurement invariance of the adapted scale was examined to analyze possible gender differences among the roles. Peer status was assessed separately by gender through two sociometric procedures: the nominations-based method and the ratings-based method. Across genders, children in the Bully role were more often rated as rejected, whereas Defenders were more popular. Results suggest that although the PRS can reveal several different peer roles in the bullying process, a more clear distinction between bullying roles (i.e., Bully, Assistant, and Reinforcer) could better inform strategies for bullying interventions.

Italian version of the Dutch Eating Behavior Questionnaire. Psychometric proprieties and measurement invariance across sex, BMI-status and age

The purpose of this study was to examine the basic psychometric proprieties of the Dutch Eating Behavior Questionnaire (DEBQ) and its measurement invariance across sex, BMI-status (normal weight/overweight), and age in a community sample of 990 Italian adults. The analysis of the dimensionality of the DEBQ using exploratory factor analysis revealed the existence of three major factors - emotional, restrained and external eating. Single and multi-group confirmatory factor analyses replicated the three-factor structure, and this dimensional structure proved to be invariant across sex, BMI-status, and age. Findings upheld the criterion-related validity (e.g., via its associations with Eating Attitudes Test-26). The DEBQ's subscales displayed high internal consistency and test-retest reliability over a 4-week period. Statistically significant differences were found when sex, BMI and age groups are compared in the latent means of emotional, external and restrained eating and they are discussed with reference to theory, past and recent empirical findings. Overall, results support the measurement invariance of the DEBQ and suggest that the Italian version is a psychometrically reliable, valid and useful measurement instrument for assessing adult eating behaviors.

Does the Revised Child Anxiety and Depression Scale (RCADS) measure anxiety symptoms consistently across adolescence? The TRAILS study

We assessed if the Revised Child Anxiety and Depression Scale (RCADS) measures anxiety symptoms similarly across age groups within adolescence. This is crucial for valid comparison of anxiety levels between different age groups. Anxiety symptoms were assessed biennially in a representative population sample (n = 2226) at three time points (age range 10-17 years) using the RCADS anxiety subscales (generalized anxiety disorder [GAD], obsessive-compulsive disorder [OCD], panic disorder [PD], separation anxiety [SA], social phobia [SP]). We examined longitudinal measurement invariance of the RCADS, using longitudinal confirmatory factor analysis, by examining the factor structure (configural invariance), factor loadings (metric invariance) and thresholds (strong invariance). We found that all anxiety subtypes were configural invariant. Metric invariance held for items on the GAD, OCD, PD and SA subscales; yet, for the SP subscale three items showed modest longitudinal variation at age 10-12. Model fit decreased modestly when enforcing additional constraints across time; however, model fit for these models was still adequate to excellent. We conclude that the RCADS measures anxiety symptoms similarly across time in a general population sample of adolescents; hence, measured changes in anxiety symptoms very likely reflect true changes in anxiety levels. We consider the instrument suitable to assess anxiety levels across adolescence.

Factor Structure and Measurement Invariance of the Wisconsin Schizotypy Scales across Gender and Age

The Wisconsin Schizotypy Scales are among the most widely used instruments for the assessment of psychosis proneness. The main goal of the present work was to study the dimensional structure underlying the Revised Physical Anhedonia Scale (RPhA), the Revised Social Anhedonia Scale (RSAS), the Magical Ideation Scale (MIS) and the Perceptual Aberration Scale (PAS). It was also explored whether the dimensions underlying these scales were invariant across gender and age. The sample was made up of 710 university students with a mean age of 19.8 years (SD = 1.9). The results showed that the dimensional structure of the Wisconsin scales was similar to that found in previous studies, displaying a Positive dimension and a Negative dimension, the Social Anhedonia Scale being related to both dimensions. Moreover, the factor structure of the schizotypy scales was found to be invariant across participants' gender and age.

Gender invariance and correlates of the drive for leanness scale

We examined the drive for leanness scale's gender invariance and its relationships with health-related behavior and body image-related drives. Men (N=342) and women (N=309) attending British universities completed the drive for leanness scale, drive for thinness scale, drive for muscularity scale, and a demographic inventory. Support for configural and metric, but not scalar, invariance emerged. Drive for leanness was positively correlated with weight training frequency, supplement use, drive for thinness, and drive for muscularity in both genders. Results provide guidance on comparing drive for leanness scale scores across gender and contribute to a coherent understanding of the drive for leanness and its correlates.

Dimensional structure and measurement invariance of the youth self-report across gender and age

PURPOSE

The aim of the present work was to examine the correlated eight-syndrome model of the Youth Self-Report (YSR) proposed by Ivanova et al [1], using a confirmatory factor analysis for ordinal data. Likewise, we explored the measurement invariance of the YSR across gender and age using multigroup comparisons, and checked whether there were differences in the latent means.

METHODS

The sample was made up of 4,868 nonclinical adolescents (47.6% males), with a mean age of 14.6 years (SD = 1.6).

RESULTS

The correlated eight-syndrome model proposed by Ivanova et al [1] showed a reasonable fit to the data, both for the total sample and by participants' gender and age. Moreover, the factor-equivalence analysis showed that the hypothesized dimensional model was invariant across gender and age. Statistically significant differences were found when comparing latent means between the groups.

CONCLUSIONS

These results coincide with those found in the literature and are in support of the replicability, generalizability, and consistency of the eight-syndrome model of the YSR, as well as its measurement invariance across gender and age. Future studies should explore the measurement invariance of this model through multigroup comparisons across cultures.

Analysis of the factor structure of the Sociocultural Attitudes Towards Appearance Questionnaire (SATAQ-3) in Spanish secondary-school students through exploratory structural equation modeling

The aims of the present study were: (1) to assess the factor structure of the SATAQ-3 in Spanish secondary-school students by means of exploratory factor analysis (EFA), confirmatory factor analysis (CFA) and exploratory structural equation modeling (ESEM) models; and (2) to study its invariance by sex and school grade. ESEM is a technique that has been proposed for the analysis of internal structure that overcomes some of the limitations of EFA and CFA. Participants were 1559 boys and girls in grades seventh to tenth. The results support the four-factor solution of the original version, and reveal that the best fit was obtained with ESEM, excluding Item 20 and with correlated uniqueness between reverse-keyed items. Our version shows invariance by sex and grade. The differences between scores of different groups are in the expected direction, and support the validity of the questionnaire. We recommend a version excluding Item 20 and without reverse-keyed items.

Measurement invariance of the Schizotypal Personality Questionnaire-Brief across gender and age

The purpose of this study was to examine the dimensional structure and measurement invariance of the Schizotypal Personality Questionnaire-Brief (SPQ-B) (Raine and Benishay, 1995) across sex and age in a representative sample of nonclinical adolescents and young adults. The sample consisted of 1789 adolescents and young adults (42.1% males), with a mean age of 17.1years (S.D.=2.9). The results indicated that the Likert version of the SPQ-B showed adequate psychometric properties (α total score 0.89). The schizotypal personality models that presented the best fit indices were Raine et al.'s (1994) three-factor model and Stefanis et al.'s (2004) four-factor model. In addition, the results support the measurement invariance of the SPQ-B across sex and age. When the latent means of the schizotypal dimensions were compared across sex and age, statistically significant differences were found. Consistent with previous literature, schizotypal personality is a multidimensional construct whose structure appears invariant across sex and age. Future studies should examine the invariance of schizotypal personality across cultures, as well as using the SPQ-B as a screening method in the general population to detect individuals at risk for schizophrenia-spectrum disorders, given its rapid and easy administration.

Measurement Invariance: A Foundational Principle for Quantitative Theory Building

This article describes why measurement invariance is a critical issue to quantitative theory building within the field of human resource development. Readers will learn what measurement invariance is and how to test for its presence using techniques that are accessible to applied researchers. Using data from a LibQUAL+TM study of user perceptions of service quality, we demonstrate how measurement invariance can threaten the validity of group comparison tests and ensuing theoretical conclusions. Moreover, we identify how measurement invariance can uncover important relationships in data that would otherwise go left unnoticed.

Body image and quality of life in a Spanish population

Purpose

The aim of the current study was to analyze the psychometric properties, factor structure, and internal consistency of the Spanish version of the Body Image Quality of Life Inventory (BIQLI-SP) as well as its test–retest reliability. Further objectives were to analyze different relationships with key dimensions of psychosocial functioning (ie, self-esteem, presence of psychopathological symptoms, eating and body image-related problems, and perceived stress) and to evaluate differences in body image quality of life due to gender.

Patients and methods

The sample comprised 417 students without any psychiatric history, recruited from the Pablo de Olavide University and the University of Seville. There were 140 men (33.57%) and 277 women (66.43%), and the mean age was 21.62 years (standard deviation = 5.12). After obtaining informed consent from all participants, the following questionnaires were administered: BIQLI, Eating Disorder Inventory-2 (EDI-2), Perceived Stress Questionnaire (PSQ), Self-Esteem Scale (SES), and Symptom Checklist-90-Revised (SCL-90-R).

Results

The BIQLI-SP shows adequate psychometric properties, and it may be useful to determine the body image quality of life in different physical conditions. A more positive body image quality of life is associated with better self-esteem, better psychological wellbeing, and fewer eating-related dysfunctional attitudes, this being more evident among women.

Conclusion

The BIQLI-SP may be useful to determine the body image quality of life in different contexts with regard to dermatology, cosmetic and reconstructive surgery, and endocrinology, among others. In these fields of study, a new trend has emerged to assess body image-related quality of life.

Integrative data analysis: the simultaneous analysis of multiple data sets

There are both quantitative and methodological techniques that foster the development and maintenance of a cumulative knowledge base within the psychological sciences. Most noteworthy of these techniques is meta-analysis, which allows for the synthesis of summary statistics drawn from multiple studies when the original data are not available. However, when the original data can be obtained from multiple studies, many advantages stem from the statistical analysis of the pooled data. The authors define integrative data analysis (IDA) as the analysis of multiple data sets that have been pooled into one. Although variants of IDA have been incorporated into other scientific disciplines, the use of these techniques is much less evident in psychology. In this article the authors present an overview of IDA as it may be applied within the psychological sciences, discuss the relative advantages and disadvantages of IDA, describe analytic strategies for analyzing pooled individual data, and offer recommendations for the use of IDA in practice.