Physical Appearance State and Trait Anxiety Scale

1. Abstract

The Physical Appearance State and Trait Anxiety Scale (PASTAS) is a specialized psychometric assessment instrument designed by body image and clinical psychology researchers David L. Reed, J. Kevin Thompson, Michael T. Brannick, and William P. Sacco in 1991. The instrument was developed to quantify affective apprehension, tension, and acute or dispositional nervousness specifically tied to subjective evaluations of distinct anatomical body sites. Unlike global indices of generalized anxiety, social physique anxiety, or overarching body dissatisfaction, the PASTAS distinguishes between transient, context-dependent affective states (state anxiety) and enduring, cross-situational tendencies to experience physical appearance-related distress (trait anxiety).

Composed of 16 self-report items corresponding to distinct anatomical regions or physical attributes, the PASTAS reliably yields a robust two-factor psychometric architecture comprising a Weight-Related / Body Shape Subscale (8 items: general overweight appearance, thighs, buttocks, hips, stomach/abdomen, legs, waist, and muscle tone) and a Non-Weight-Related Subscale (8 items: ears, lips, wrists, hands, forehead, neck, chin, and feet). The state version assesses in-the-moment tension utilizing a 5-point Likert-type intensity metric ranging from 0 (“Not at All”) to 4 (“Exceptionally So”), whereas the trait version evaluates enduring frequency across time on a 5-point metric ranging from 1 (“Never”) to 5 (“Always”) or 0 to 4 in standardized computerized adaptations. Extensive psychometric evaluations across clinical, college, and non-clinical populations demonstrate high internal consistency (Cronbach’s alpha coefficients routinely exceeding .85 for the total scale and weight-related subscale), robust convergent validity with indices of eating pathology, social evaluation fears, and depression, as well as distinct discriminant validity against non-weight bodily appearance concerns. The PASTAS remains an indispensable clinical and empirical instrument for monitoring acute symptom shifts during cognitive-behavioral interventions and dissecting the multidimensional nature of body image disorders.

2. Keywords

Physical Appearance State and Trait Anxiety Scale, PASTAS, body image anxiety, state-trait anxiety, eating disorders, weight-related anxiety, non-weight appearance anxiety, psychometrics, body dissatisfaction, social evaluation, body dysmorphic disorder, physique assessment.

3. Authors

The Physical Appearance State and Trait Anxiety Scale was conceptualized, operationalized, and psychometrically validated by a collaborative research team situated at the Department of Psychology, University of South Florida (Tampa, Florida, United States):

• David L. Reed, Ph.D.: Clinical Psychologist and psychometrician; primary researcher on somatic anxiety manifestations in eating disturbances.
• J. Kevin Thompson, Ph.D.: Emeritus Professor of Psychology at the University of South Florida; internationally renowned pioneer in the assessment and treatment of body image disturbances, eating disorders, and socio-cultural appearance pressures. (Corresponding author: 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 Industrial-Organizational Psychology and quantitative methodology at the University of South Florida, specializing in factor analytic modeling and measurement error analysis.
• William P. Sacco, Ph.D.: Professor Emeritus of Clinical Psychology at the University of South Florida, renowned for scholarly contributions to clinical depression, interpersonal relationships, and cognitive appraisal models.

4. Purpose

The primary purpose of the Physical Appearance State and Trait Anxiety Scale (PASTAS) is to isolate, assess, and differentiate subjective affective distress—specifically anxiety, tension, and nervousness—attributable to discrete physical body regions. Prior to the development of the PASTAS, clinical researchers faced significant methodological limitations when attempting to parse whether an individual’s negative body experience was characterized by cognitive dissatisfaction (e.g., evaluative discontent measured by the Body Dissatisfaction subscale of the Eating Disorder Inventory), generalized social anxiety, or an acute visceral anxiety reaction triggered by somatic self-awareness. Furthermore, existing measures routinely conflated non-weight-related somatic concerns (such as facial features or peripheral extremities) with adiposity-salient anatomical zones.

From an applied clinical perspective, the PASTAS serves several critical functions:

• Differential Diagnosis and Profiling: It provides granular diagnostic insights into whether a client’s clinical presentation aligns primarily with anorexia nervosa, bulimia nervosa, or binge eating disorder (which predominantly exhibit sky-high elevations on the Weight-Related Subscale) or features of Body Dysmorphic Disorder (BDD), wherein distress often concentrates on facial morphology, skin, or peripheral features evaluated via the Non-Weight-Related Subscale.
• Experimental and In Vivo Provocation Research: The dual state-trait framing empowers researchers to capture baseline appearance neuroticism (trait) while exposing participants to laboratory stressors—such as mirror exposure tasks, video feedback paradigms, social-evaluative threat, or digital image alterations—and quantifying instantaneous, moment-to-moment affective fluctuations (state).
• Treatment Tracking and Outcome Monitoring: Within cognitive-behavioral therapy (CBT) protocols for body image disturbance, therapists use the PASTAS to monitor desensitization during systematic exposure exercises, measuring the reduction of subjective units of distress (SUDS) tied to specific bodily locations.

5. Psychological Construct

The central construct quantified by the PASTAS is site-specific appearance anxiety, conceptualized through the multidimensional lens of state-trait affective psychology. While body dissatisfaction denotes an evaluative, cognitive discrepancy between one’s perceived physical self and an internalized ideal, appearance anxiety represents an active emotional and physiological manifestation characterized by anticipatory dread, subjective tension, motoric unease, and hyper-vigilance directed toward perceived somatic flaws.

The State-Trait Dichotomy

Drawing directly upon classical psychometric paradigms articulated by Charles Spielberger, the PASTAS models appearance-related affective distress along two temporal and situational axes:

• State Appearance Anxiety: Denotes a transitory emotional state characterized by consciously perceived feelings of apprehension, tension, and heightened autonomic nervous system arousal triggered “right now, at this exact moment” by the psychological salience of one’s anatomical form. It fluctuates rapidly in response to environmental cues, such as wearing swimwear, entering public social spaces, or standing before a full-length reflective mirror.
• Trait Appearance Anxiety: Denotes a relatively stable, enduring personality disposition reflecting an individual’s baseline proneness to perceive various anatomical sites as threatening or distressing, manifested as chronic, repetitive worry over time across diverse situational settings.

Subscale Taxonomy

The scale systematically divides physical anxiety into two structurally independent yet correlated anatomical categories:

• Weight-Related Subscale (Anatomical Adiposity Salience): Consisting of items 1 through 8 (overweight appearance, thighs, buttocks, hips, stomach/abdomen, legs, waist, and muscle tone), this dimension captures apprehension centered around body mass, fat deposition, muscular definition, and central-peripheral adiposity. In Western socio-cultural contexts, these somatic sites are heavily saturated with sociocultural thin-ideal pressures and stigmatization. Elevated scores on this dimension directly underpin restrictive eating pathologies, excessive compensatory exercise, and body-checking compulsions.
• Non-Weight-Related Subscale (Peripheral and Facial Morphology): Consisting of items 9 through 16 (ears, lips, wrists, hands, forehead, neck, chin, and feet), this dimension evaluates affective tension associated with anatomical regions that remain largely independent of variations in body fat or caloric balance. This subscale provides a critical empirical baseline, ensuring that high generalized somatic neuroticism or dysmorphic concerns can be statistically differentiated from specific weight-driven psychopathology.

6. Theoretical Framework

The conceptual genesis of the PASTAS is anchored in cognitive-behavioral, social cognitive, and state-trait theories of emotion:

1. Spielberger’s State-Trait Anxiety Model

The primary theoretical foundation is rooted in Charles Spielberger’s State-Trait Anxiety Model (1983). Spielberger established that anxiety must be decomposed into enduring trait vulnerability ($A-Trait$) and situational state responses ($A-State$). Reed, Thompson, Brannick, and Sacco (1991) transferred this architecture to body image psychopathology, positing that individuals possess stable cognitive schemas regarding bodily inadequacy that predispose them to acute, elevated state anxiety whenever external stimuli (such as interpersonal evaluation or reflective exposure) activate those schemas.

2. Cognitive-Behavioral Model of Body Image (Cash & Thompson)

Within the cognitive-behavioral framework formulated by Thomas F. Cash and J. Kevin Thompson, body image is construed not as a static perceptual snapshot, but as a reciprocal dynamic involving historical predispositions (cultural socialization, peer teasing, biological factors), body image schemas (mental representations of the physical self), and activating events. When an individual with entrenched appearance-schematic processing encounters situational cues (e.g., trying on form-fitting clothing), schema activation generates automatic negative thoughts and subjective appearance anxiety. The PASTAS directly operationalizes the affective component of this cognitive-behavioral feedback loop.

3. The Tripartite Influence Model

Thompson’s broader Tripartite Influence Model posits that societal channels (parents, peers, and mass media) exert pressure toward unattainable aesthetic ideals, fostering internalizations and frequent social comparisons. The PASTAS serves as the affective gauge demonstrating how internalizing these ideals converts everyday somatic awareness into continuous anxiety regarding body parts that deviate from culturally idealized parameters.

7. Validity

Empirical validation of the PASTAS has been rigorously established across decades of empirical investigation spanning non-clinical college cohorts, clinical eating disorder samples, and post-bariatric populations.

Construct and Convergent Validity

In the initial psychometric validation study by Reed et al. (1991), the Weight-Related Subscale demonstrated strong, statistically significant positive correlations with established indices of eating disturbance and general body dissatisfaction:

• High positive correlation with the Eating Disorder Inventory (EDI) Body Dissatisfaction subscale ($r \approx .70$ to $.78, p < .001$).
• Significant positive association with the Eating Attitudes Test (EAT-26) and Bulimia Test (BULIT) scores ($r \approx .55$ to $.65$).
• Moderate-to-high correlations with the Social Physique Anxiety Scale (SPAS) ($r > .65$), confirming that the weight subscale accurately captures social-evaluative physique fears.
• Statistically significant convergence with generalized state-trait anxiety measured via the Spielberger STAI ($r \approx .35$ to $.48$), demonstrating that while the PASTAS taps into affective anxiety, it remains distinct from content-free generalized nervousness.

Discriminant Validity

The PASTAS displays exceptional discriminant validity through the deliberate inclusion of the Non-Weight-Related Subscale:

• Correlations between the Non-Weight-Related Subscale and eating disorder pathology measures (EDI, BULIT, EAT) are consistently weak and nonsignificant ($r < .20$, often $r < .12$), demonstrating that eating pathology specifically drives anxiety regarding adiposity-related regions rather than generalized bodily self-consciousness.
• Factor intercorrelations between the Weight-Related and Non-Weight-Related dimensions typically range from moderate to low ($r \approx .30$ to $.42$), indicating that the two subscales tap distinct psychological constructs.

Predictive and Experimental Validity

Experimental studies utilizing mirror exposure, photographic self-confrontation, and dietary manipulation confirm that the State Version of the PASTAS Weight-Related subscale increases significantly following exposure to body-focused challenges in symptomatic cohorts, whereas control cohorts exhibit minimal state elevation. Furthermore, longitudinal studies have verified that reductions in PASTAS trait scores during CBT intervention predict maintenance of recovery at 6- and 12-month follow-up evaluations.

8. Reliability

The PASTAS exhibits robust psychometric reliability across internal consistency metrics, split-half parameters, and temporal test-retest indices:

Internal Consistency

Across the seminal validation trials and subsequent cross-cultural replications:

• Weight-Related Subscale: Demonstrates exceptional internal consistency, with Cronbach’s alpha ($\alpha$) values consistently reported between $.88$ and $.93$ for both female and male samples across both state and trait administrations.
• Non-Weight-Related Subscale: Yields good internal consistency, with alpha coefficients typically ranging between $.78$ and $.86$.
• Total Scale: Global composite reliability estimates routinely exceed $.89$.

Test-Retest Temporal Stability

The temporal stability of the instrument adheres directly to theoretical expectations governing state versus trait metrics:

• Trait Version: Re-test reliability over a two-week interval yielded coefficients of $r = .87$ for the Weight-Related subscale and $r = .82$ for the Non-Weight-Related subscale, confirming strong temporal stability in the absence of targeted intervention.
• State Version: Exhibited markedly lower re-test coefficients across fluctuating conditions ($r \approx .35$ to $.52$), empirically verifying its sensitivity to transient contextual and situational shifts rather than invariant measurement error.

9. Factor Analysis

The underlying factorial architecture of the PASTAS has been examined via exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) across diverse international populations.

Exploratory Factor Structure (EFA)

In the original investigation by Reed et al. (1991), principal components analysis with varimax and oblimin rotations of the 16 items cleanly extracted two distinct, orthogonal-to-oblique factors accounting for the majority of the total variance:

• Factor 1: Weight-Related Appearance Anxiety: Characterized by robust factor loadings (ranging from $.65$ to $.86$) on items evaluating adiposity and muscular physique: item 1 (overweight extent), item 2 (thighs), item 3 (buttocks), item 4 (hips), item 5 (stomach), item 6 (legs), item 7 (waist), and item 8 (muscle tone). Cross-loadings onto the non-weight factor were negligible ($< .25$).
• Factor 2: Non-Weight-Related Appearance Anxiety: Defined by high factor loadings (ranging from $.52$ to $.79$) on peripheral and cephalic features: item 9 (ears), item 10 (lips), item 11 (wrists), item 12 (hands), item 13 (forehead), item 14 (neck), item 15 (chin), and item 16 (feet).

Confirmatory Factor Analysis (CFA) Fit Indices

Subsequent structural evaluations testing the hypothesized two-factor oblique model have confirmed superior fit compared to single-factor or multidimensional models. Standard structural equation modeling yields excellent fit statistics:

• Comparative Fit Index (CFI) $ge .94$
• Tucker-Lewis Index (TLI) $ge .93$
• Root Mean Square Error of Approximation (RMSEA) $le .058$ ($90% \text{ CI } [.048, .067]$)
• Standardized Root Mean Square Residual (SRMR) $le .051$

These empirical indices validate that the split between body fat/shape zones and peripheral somatic zones is structurally invariant across gender, athletic status, and clinical severity.

10. Instrument / Measurement Tool

The operational administration parameters of the PASTAS are structured as follows:

• Instrument Designation: Physical Appearance State and Trait Anxiety Scale (PASTAS).
• Instrument Formats: Two distinct administrative versions: State Version (assessing momentary situational tension) and Trait Version (assessing enduring frequency).
• Item Count: 16 anatomical somatic items in total across both versions.
• Subscales:
  • Weight-Related Anxiety Subscale: Items 1, 2, 3, 4, 5, 6, 7, and 8 (8 items).
  • Non-Weight-Related Anxiety Subscale: Items 9, 10, 11, 12, 13, 14, 15, and 16 (8 items).
• Response Metrics:
  • Trait Version Response Scale: 5-point Likert-type frequency metric:
    1 = Never, 2 = Seldom, 3 = Sometimes, 4 = Often, 5 = Always.
    (Alternative zero-indexed research format: 0 = Never, 1 = Seldom, 2 = Sometimes, 3 = Often, 4 = Always).
  • State Version Response Scale: 5-point Likert-type intensity metric:
    0 = Not at All, 1 = Slightly, 2 = Moderately, 3 = Very Much So, 4 = Exceptionally So.
• Scoring Procedures:
  • All items are positively scored; there are no reverse-coded items.
  • Weight-Related Score: Sum or mean of items 1 through 8. Higher scores indicate greater anxiety regarding body fat, shape, and muscularity.
  • Non-Weight-Related Score: Sum or mean of items 9 through 16. Higher scores reflect elevated distress regarding peripheral or facial somatic features.
  • Total Score: Sum or mean of all 16 items, providing an overall index of physical appearance anxiety.
• Administration Modality: Available as a paper-and-pencil questionnaire, digitized assessment battery, or interactive online diagnostic survey. Average completion time is 2 to 4 minutes.

11. Permissions & Fee and Test Year

The Physical Appearance State and Trait Anxiety Scale was formally published in 1991 by David L. Reed, J. Kevin Thompson, Michael T. Brannick, and William P. Sacco in the Journal of Anxiety Disorders. The instrument is open and accessible for non-commercial academic research, empirical investigations, and individual clinical practice. No commercial licensing fees are mandated for educational or research implementations. Researchers and clinicians wishing to utilize the instrument in formal protocols or grant-funded investigations are encouraged to cite the original 1991 publication and contact the primary corresponding developer:

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

12. 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.
• Hart, E. A., Leary, M. R., & Rejeski, W. J. (1989). The measurement of social physique anxiety. Journal of Sport and Exercise Psychology, 11(1), 94–104. https://doi.org/10.1123/jsep.11.1.94
• 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 (Form Y). Consulting Psychologists Press.
• Thompson, J. K. (1990). Body image disturbance: Assessment and intervention. Pergamon 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

13. Items of the Scale