Physical Appearance State and Trait Anxiety Scale

Abstract

The Physical Appearance State and Trait Anxiety Scale (PASTAS) is a specialized psychometric instrument developed by David L. Reed, J. Kevin Thompson, Michael T. Brannick, and William P. Sacco in 1991 to quantify body-image-specific anxiety across both temporal states and enduring dispositional traits. Rooted in the multidimensional conceptualization of body image and anxiety, the PASTAS addresses a critical methodological limitation of generalized anxiety inventories, which routinely fail to capture anxiety triggered specifically by somatic evaluation and perceived aesthetic discrepancies. The instrument comprises 16 items representing discrete anatomical structures and somatic characteristics. Factor-analytic validation consistently identifies a robust two-factor orthogonal or oblique architecture: the Weight-Relevant Subscale (8 items assessing anxiety related to the stomach, thighs, buttocks, hips, waist, legs, muscle tone, and looking overweight) and the Non-Weight-Relevant Subscale (8 items assessing anxiety related to peripheral and facial structures including the ears, lips, wrists, hands, forehead, neck, chin, and feet). The instrument provides two assessment modalities: a Trait version evaluating general frequency using a 5-point Likert scale (1 = Never to 5 = Always) and a State version evaluating real-time subjective tension using a 5-point Likert scale (0 = Not at All to 4 = Exceptionally So). Across clinical and non-clinical cohorts, the PASTAS demonstrates high internal consistency (Cronbach’s alpha typically ranging from .82 to .92 for the Weight-Relevant subscale and .76 to .88 for the Non-Weight-Relevant subscale), excellent convergent validity with measures of eating disturbance, social physique anxiety, and negative affect, and sensitive responsiveness to experimental laboratory inductions. The PASTAS remains a foundational instrument in clinical psychology, psychiatry, behavioral medicine, and eating disorder research.

Keywords

Physical Appearance State and Trait Anxiety Scale, PASTAS, body image anxiety, state-trait anxiety, eating disorders, weight dissatisfaction, body dysmorphia, psychometrics, somatic anxiety, physique anxiety

Authors

The Physical Appearance State and Trait Anxiety Scale was conceptualized, operationalized, and psychometrically validated by a team of clinical psychologists and quantitative psychometricians at the University of South Florida (Tampa, Florida, United States):

• David L. Reed, Ph.D. — Department of Psychology, University of South Florida. Primary investigator focusing on clinical assessment, body image disturbances, and psychological measurement.
• J. Kevin Thompson, Ph.D. — Emeritus Professor of Psychology, Department of Psychology, University of South Florida. Internationally recognized authority on body image pathology, eating disorders, assessment methodologies, and sociocultural influences on physical appearance. Contact: Department of Psychology, University of South Florida, 4202 Fowler Ave, Tampa, FL 33620-8200; Email: [email protected] / [email protected].
• Michael T. Brannick, Ph.D. — Professor of Psychology, Department of Psychology, University of South Florida. Quantitative methodologist specializing in psychometric theory, structural equation modeling, meta-analysis, and factor analysis.
• William P. Sacco, Ph.D. — Professor Emeritus of Psychology, Department of Psychology, University of South Florida. Specialist in cognitive-behavioral processes, interpersonal dynamics, depression, and health psychology.

Purpose

The primary purpose of the Physical Appearance State and Trait Anxiety Scale is to isolate, assess, and differentiate subjective anxiety anchored directly to anatomical features and physical appearance. Prior to the development of the PASTAS, assessment protocols in body image research and eating disorder clinics faced a significant empirical dilemma: clinicians and researchers either relied upon global anxiety inventories, such as the State-Trait Anxiety Inventory (STAI), or general cognitive-affective body dissatisfaction scales, such as the Body Dissatisfaction subscale of the Eating Disorder Inventory (EDI) and the Body Shape Questionnaire (BSQ). While global anxiety measures could capture autonomic arousal and subjective apprehension, they were completely insensitive to appearance-specific environmental cues, somatic triggers, and dysmorphic preoccupations. Conversely, traditional body image scales measured cognitive evaluations (e.g., evaluative satisfaction/dissatisfaction) or behavioral avoidance, but conflated these cognitions with distinct emotional states of acute tension, fear of negative evaluation, and somatic dread.

The PASTAS was engineered to bridge this psychometric gap by operationalizing two foundational distinctions:

1. The State versus Trait Distinction: In alignment with Spielberger’s state-trait anxiety taxonomy, the PASTAS distinguishes between enduring, cross-situational propensities to experience appearance-related nervousness (Trait PASTAS) and momentary, acute fluctuations in appearance anxiety provoked by acute situational triggers (State PASTAS), such as exposure to mirrors, wearing revealing clothing, stepping onto a scale, or anticipating public somatic scrutiny.
2. The Weight-Relevant versus Non-Weight-Relevant Anatomical Typology: Body dissatisfaction and appearance anxiety are not anatomically uniform. While individuals vulnerable to eating pathologies and societal thin-ideal or muscularity pressures concentrate their distress on regions linked to adiposity (e.g., abdomen, thighs, buttocks, waist), clinical entities such as Body Dysmorphic Disorder (BDD) frequently center upon focal, non-weight-related somatic regions (e.g., facial symmetry, nose, ears, wrists, neck, feet). The PASTAS purposefully separates these anatomical clusters, providing clinical diagnostic specificity that standard eating disorder scales cannot offer.

In applied clinical contexts, the PASTAS serves as an essential baseline diagnostic measure, a tracking tool for exposure-based cognitive-behavioral therapy (CBT) protocols, and an index of treatment outcome in inpatient and outpatient eating disorder programs. In empirical research, the State PASTAS allows experimental psychologists to measure the immediate impact of media exposure, social media consumption, peer commentary, and mirror-gazing paradigms on acute somatic distress.

Psychological Construct

The core psychological construct evaluated by the PASTAS is physical appearance anxiety—defined as a dedicated affective and psychophysiological state characterized by subjective feelings of tension, apprehension, nervousness, and cognitive worry concerning specific anatomical dimensions of one’s body. Rather than evaluating appearance evaluation (e.g., “I think my stomach is unattractive”), the PASTAS evaluates the emotional perturbation and distress generated by those evaluations (e.g., “I feel anxious, tense, or nervous about my stomach”).

The construct is delineated into two correlated, yet psychometrically and clinically distinct, dimensional subscales:

1. Weight-Relevant Subscale (8 Items)

The Weight-Relevant subscale encapsulates anxiety directed toward anatomical regions directly implicated in bodily adiposity, somatic mass distribution, muscle definition, and cultural standards of slimness or athletic muscularity. The specific items constituting this dimension include:

• The extent to which one looks overweight
• Thighs
• Buttocks
• Hips
• Stomach (abdomen)
• Legs
• Waist
• Muscle tone

This dimension reflects core vulnerabilities observed in Anorexia Nervosa, Bulimia Nervosa, Binge Eating Disorder, and muscle dysmorphia. Individuals scoring high on this subscale experience severe cognitive intrusion and autonomic nervous system activation when these anatomical sites are exposed, evaluated, or mentally recalled. This anxiety stems from the internalized fear of social devaluation, perceived loss of self-control, and violation of socio-cultural physique ideals.

2. Non-Weight-Relevant Subscale (8 Items)

The Non-Weight-Relevant subscale encapsulates anxiety directed toward peripheral, craniofacial, and non-adipose skeletal structures. The items defining this dimension are:

• Ears
• Lips
• Wrists
• Hands
• Forehead
• Neck
• Chin
• Feet

This subscale provides a vital psychometric baseline and clinical comparator. In typical populations and clinical eating disorder cohorts, anxiety regarding non-weight body parts is substantially lower than weight-related anxiety, acting as a discriminant control. However, in individuals suffering from Body Dysmorphic Disorder, generalized somatic preoccupation, or social phobia involving focal physical defects, the Non-Weight-Relevant subscale demonstrates significant elevations. By operationalizing both dimensions simultaneously, the PASTAS permits clinicians to evaluate whether an individual’s appearance distress is uniquely weight-centric or indicative of a generalized, polymorphic dysmorphic process.

Theoretical Framework

The conceptual architecture of the PASTAS rests upon the convergence of three foundational paradigms within clinical and cognitive psychology: Charles Spielberger‘s State-Trait Anxiety Model, Cognitive-Behavioral Models of Body Image (Cash, 2002; Thompson et al., 1999), and Higgins’ Self-Discrepancy Theory.

Spielberger’s State-Trait Anxiety Paradigm

In 1966 and 1983, Spielberger posited that human anxiety must be bifurcated into two interactive constructs:

• A-Trait (Trait Anxiety): A relatively stable, enduring individual difference in anxiety proneness, reflecting a chronic disposition to perceive a wide range of stimulus situations as dangerous or threatening.
• A-State (State Anxiety): A transitory emotional condition characterized by subjective, consciously perceived feelings of tension, apprehension, and heightened autonomic nervous system activity, which fluctuates dynamically across time as a function of external stressors and internal appraisal.

Reed, Thompson, Brannick, and Sacco (1991) transferred this elegant paradigm directly to the physical appearance domain. Trait appearance anxiety represents the chronic baseline vulnerability to feel threatened by one’s physical body across daily life. State appearance anxiety represents the situational spikes in autonomic arousal and subjective dread that occur when body-focused threat cues (e.g., social comparison, mirror reflection, intimate physical proximity, tight clothing) are activated in the immediate environment.

Cognitive-Behavioral Body Image Framework

Thomas F. Cash and J. Kevin Thompson integrated cognitive processing models into body image pathology. Under this framework, physical appearance schemas function as cognitive filters through which individuals process somatic information. When an individual with dysfunctional appearance schemas encounters activating events (e.g., noticing weight gain or viewing an idealized social media image), automatic thoughts regarding inadequacy are triggered. These cognitive distortions immediately elicit appearance anxiety, which in turn motivates maladaptive coping behaviors, such as body checking, mirror avoidance, dietary restriction, or social withdrawal. The PASTAS isolates the emotional component—the appearance anxiety—acting as the affective bridge connecting cognitive schema activation to compensatory behavioral rituals.

Self-Discrepancy Theory

E. Tory Higgins’ (1987) Self-Discrepancy Theory postulates that emotional distress arises from perceived incongruities between the actual self (the attributes one believes one actually possesses) and self-guides, such as the ideal self (attributes one wishes to possess) or the ought self (attributes one feels obligated to possess). Discrepancies between the actual somatic appearance and the idealized somatic standard generate dejection- and agitation-related emotions. Specifically, actual-ideal body discrepancies provoke feelings of shame and depressive dissatisfaction, whereas actual-ought body discrepancies provoke acute social physique anxiety, agitation, and fear of negative social evaluation. The PASTAS directly quantifies this agitated, anxiety-driven affective state.

Validity

The psychometric validity of the PASTAS has been rigorously established across extensive clinical, university, and community samples through investigations of construct, convergent, discriminant, and criterion-related validity.

Construct and Factorial Validity

During the initial scale development by Reed et al. (1991), exploratory factor analyses established the structural integrity of the instrument. The items consistently bifurcated into two coherent factors: Weight-Relevant and Non-Weight-Relevant body structures. This two-factor structure has been confirmed across diverse cultural adaptations, including Spanish, Portuguese, Italian, and Turkish translations, demonstrating factorial invariance across gender and clinical status.

Convergent Validity

Convergent validity has been repeatedly demonstrated through significant, theoretically coherent correlations with established instruments measuring body image pathology, eating disorder symptomatology, and general psychological distress:

• Body Dissatisfaction: The PASTAS Weight-Relevant subscale exhibits strong positive correlations with the Body Dissatisfaction subscale of the Eating Disorder Inventory (EDI; r = .68 to .78) and the Body Shape Questionnaire (BSQ; r = .70 to .82).
• Social Physique Anxiety: Both the Trait and State versions of the PASTAS Weight-Relevant subscale correlate robustly with the Social Physique Anxiety Scale (SPAS; r = .65 to .76), confirming that the instrument successfully captures apprehension tied to interpersonal somatic appraisal.
• General Anxiety and Depression: The PASTAS correlates moderately with global measures of anxiety (STAI Trait; r = .35 to .48) and depressive symptomatology (Beck Depression Inventory; r = .30 to .45), demonstrating that while appearance anxiety shares common affective variance with global negative affectivity, it represents a distinct, non-redundant construct.

Discriminant Validity

The PASTAS demonstrates exceptional discriminant validity through the statistical divergence between its two subscales. In non-clinical cohorts and individuals with standard weight concerns, the correlation between the Weight-Relevant and Non-Weight-Relevant subscales is typically low to moderate (r = .25 to .40), confirming that the items do not merely tap a generalized somatic response bias. Furthermore, the Non-Weight-Relevant subscale routinely demonstrates near-zero correlations with measures of dietary restraint, bulimic behaviors, and drive for thinness, successfully isolating weight pathology from general anatomical inspection.

Criterion and Experimental Validity

The State PASTAS has demonstrated profound sensitivity in experimental psychopathology paradigms:

• Laboratory Mirror Exposure: When individuals high in body dissatisfaction undergo full-length mirror exposure, the State PASTAS Weight-Relevant score shows immediate, statistically significant elevations compared to neutral control tasks.
• Sociocultural Media Induction: Exposure to media depictions of the thin or muscular ideal produces rapid, measurable increases in State PASTAS scores among vulnerable women and men, whereas exposure to neutral landscapes or non-body advertising produces no change.
• Clinical Differentiation: Inpatient individuals diagnosed with Anorexia Nervosa and Bulimia Nervosa score significantly higher on the Weight-Relevant subscale than age-matched controls, while Non-Weight-Relevant scores show parity unless comorbid body dysmorphic disorder is present.

Reliability

The PASTAS displays high internal consistency and predictable temporal stability across multiple psychometric investigations:

Internal Consistency

In the seminal validation study by Reed et al. (1991), internal consistency was evaluated using Cronbach’s alpha coefficient across both scale versions:

• Trait Version:
  • Weight-Relevant Subscale: $\alpha = .87$ to $.92$
  • Non-Weight-Relevant Subscale: $\alpha = .78$ to $.85$
  • Total Scale: $\alpha = .89$ to $.93$
• State Version:
  • Weight-Relevant Subscale: $\alpha = .88$ to $.93$
  • Non-Weight-Relevant Subscale: $\alpha = .76$ to $.84$
  • Total Scale: $\alpha = .89$ to $.92$

Subsequent psychometric investigations across international cohorts (e.g., Cash et al., 2004; Thompson et al., 1999) have replicated these high internal consistency metrics, with composite reliability coefficients routinely exceeding the acceptable psychometric threshold of $.80$.

Test-Retest Reliability and Temporal Dynamics

The psychometric evaluation of test-retest reliability reflects the distinct theoretical properties of trait versus state constructs:

• Trait PASTAS: Over a two-week test-retest interval, the Trait version demonstrates high temporal stability, with coefficients ranging from $r = .81$ to $r = .89$ for the Weight-Relevant subscale and $r = .74$ to $r = .82$ for the Non-Weight-Relevant subscale. This confirms that trait appearance anxiety behaves as an enduring personality disposition.
• State PASTAS: In contrast, the State version demonstrates moderate short-term test-retest stability ($r = .45$ to $r = .65$) over multi-day intervals in the absence of interventions, while showing immediate, marked sensitivity to situational fluctuations and therapeutic exposures. This responsiveness validates the scale’s utility as a dynamic state indicator.

Factor Analysis

The factorial validity of the PASTAS was originally determined through principal components analysis (PCA) with orthogonal (Varimax) and oblique (Promax) rotations, and has since been corroborated by rigorous Confirmatory Factor Analysis (CFA) across diverse clinical and empirical cohorts.

Seminal Exploratory Factor Analysis (Reed et al., 1991)

The original exploratory analysis performed by Reed, Thompson, Brannick, and Sacco (1991) on a sample of 389 participants yielded a clear two-factor solution accounting for over 52% of the total scale variance. Eigenvalue inspection (scree test) demonstrated a dramatic break after the second factor:

• Factor 1: Weight-Relevant Body Sites (Eigenvalue > 5.2, accounting for approximately 35% of variance). Items loading cleanly onto this factor include the extent to which one looks overweight (.84), stomach (.82), waist (.81), thighs (.79), hips (.77), buttocks (.75), legs (.71), and muscle tone (.58). Cross-loadings onto Factor 2 were uniformly low (< .25).
• Factor 2: Non-Weight-Relevant Body Sites (Eigenvalue > 2.6, accounting for approximately 17% of variance). Items loading cleanly onto this factor include ears (.76), lips (.73), wrists (.70), forehead (.68), neck (.65), chin (.64), hands (.62), and feet (.57). Cross-loadings onto Factor 1 were minimal (< .20).

Confirmatory Factor Analytic (CFA) Fit Indices

Subsequent confirmatory studies comparing alternative structural models (unidimensional model vs. independent two-factor model vs. correlated two-factor model) have confirmed that the correlated two-factor model provides the best fit to empirical data. Standard model fit parameters routinely fall within accepted thresholds for good fit:

• Comparative Fit Index (CFI): $.94$ to $.97$
• Tucker-Lewis Index (TLI): $.93$ to $.96$
• Root Mean Square Error of Approximation (RMSEA): $.048$ to $.062$ (with 90% confidence intervals spanning $.038$ to $.071$)
• Standardized Root Mean Square Residual (SRMR): $.041$ to $.055$

These findings verify that the two-factor structural taxonomy of the PASTAS is stable across both sex and developmental stages, including adolescent and adult populations.

Instrument / Measurement Tool

• Test Type: Self-report psychological rating scale (available in both State and Trait assessment formats).
• Construct Assessed: Physical appearance-specific anxiety across discrete anatomical features.
• Subscales / Dimensions:
  • Weight-Relevant Subscale: 8 items (Items 1, 2, 3, 4, 5, 6, 7, 8).
  • Non-Weight-Relevant Subscale: 8 items (Items 9, 10, 11, 12, 13, 14, 15, 16).
• Item Count: 16 items.
• Administration Time: Approximately 3 to 5 minutes.
• Target Population: Adolescents (ages 13+) and adults across clinical, research, and non-clinical settings.
• Response Formats:
  • Trait Version: Evaluates general, habitual frequency of anxiety using a 5-point Likert scale: 1 = Never, 2 = Seldom, 3 = Sometimes, 4 = Often, 5 = Always.
  • State Version: Evaluates momentary, real-time subjective anxiety using a 5-point Likert scale: 0 = Not at All, 1 = Slightly, 2 = Moderately, 3 = Very Much So, 4 = Exceptionally So.
• Scoring Procedures:
  • Weight-Relevant Subscale Score: Calculated by summing the scores of items 1 through 8 (or calculating the mean item score). On the Trait version (1-5), scores range from 8 to 40. On the State version (0-4), scores range from 0 to 32.
  • Non-Weight-Relevant Subscale Score: Calculated by summing the scores of items 9 through 16 (or calculating the mean item score). On the Trait version (1-5), scores range from 8 to 40. On the State version (0-4), scores range from 0 to 32.
  • Total Scale Score: Summation of all 16 items. Trait total ranges from 16 to 80; State total ranges from 0 to 64. In clinical and psychometric research, maintaining separate subscale scores is strongly recommended over total scores to avoid obscuring the divergence between weight-based and non-weight-based distress.
  • Reverse-Scored Items: None. All items are positively keyed toward appearance anxiety.

Permissions & Fee and Test Year

The Physical Appearance State and Trait Anxiety Scale was first published in 1991 by David L. Reed, J. Kevin Thompson, Michael T. Brannick, and William P. Sacco in the Journal of Anxiety Disorders. The measure was developed within an academic research setting at the University of South Florida.

The scale is generally accessible for non-commercial academic research, empirical investigations, and clinical training without royalty fees, provided that appropriate scholarly attribution and bibliographic citation are maintained. Clinicians and researchers wishing to utilize the instrument, obtain official administration forms, or adapt the scale into computerized medical systems should contact the corresponding primary author:

J. Kevin Thompson, Ph.D.
Department of Psychology
University of South Florida
4202 Fowler Ave, Tampa, FL 33620-8200
Email: [email protected] / [email protected]

References

• Cash, T. F. (2002). Cognitive-behavioral perspectives on body image. In T. F. Cash & T. Pruzinsky (Eds.), Body image: A handbook of theory, research, and clinical practice (pp. 38–46). Guilford Press.
• Cash, T. F., Melnyk, S. E., & Hrabosky, J. I. (2004). The assessment of body image investment: An extensive revision of the Appearance Schemas Inventory. International Journal of Eating Disorders, 35(3), 305–316. https://doi.org/10.1002/eat.10264
• Higgins, E. T. (1987). Self-discrepancy: A theory relating self and affect. Psychological Review, 94(3), 319–340. https://doi.org/10.1037/0033-295X.94.3.319
• Reed, D. L., Thompson, J. K., Brannick, M. T., & Sacco, W. P. (1991). Development and validation of the Physical Appearance State and Trait Anxiety Scale (PASTAS). Journal of Anxiety Disorders, 5(4), 323–332. https://doi.org/10.1016/0887-6185(91)90032-O
• Spielberger, C. D. (1983). Manual for the State-Trait Anxiety Inventory: STAI (Form Y). Consulting Psychologists Press.
• Thompson, J. K., Heinberg, L. J., Altabe, M., & Tantleff-Dunn, S. (1999). Exacting beauty: Theory, assessment, and treatment of body image disturbance. American Psychological Association. https://doi.org/10.1037/10312-000

Items of the Scale