Comparison Standards Scale for Appearance (CSS-A)

Abstract

The Comparison Standards Scale for Appearance (CSS-A), developed by McCarthy et al. in 2023, is a sophisticated psychometric instrument designed to measure self-reported engagement with various types of comparison standards related specifically to an individual’s appearance. The scale assesses engagement with social, temporal, criteria-based, dimensional, and counterfactual comparisons.

A central objective of the CSS-A is to precisely distinguish between different comparison standards and directions, covering both upward comparisons (comparing against a better standard) and downward comparisons (comparing against a worse standard). The initial 23-item scale was constructed in English and subsequently translated into German. Initial psychometric testing, conducted in a predominantly student sample of adult participants, confirmed acceptable reliability and validity, including factor analytic results supporting its two-factor structure.

Keywords

Appearance, Comparison Standards, Downward Comparisons, Self-Evaluation, Social Comparison, Upward Comparisons, Psychometrics, Body Image.

Authors

McCarthy, Peter A., Meyer, Thomas, Back, Mitja D., Morina, Nexhmedin.

Purpose

The primary purpose of the CSS-A is to offer a comprehensive, nuanced assessment of the comparison process as it relates exclusively to appearance standards. Traditional measures often focus narrowly on social comparisons; however, the CSS-A aims to capture a broader spectrum of comparison types, including temporal, criteria-based, dimensional, and counterfactual standards.

By disentangling these specific comparison directions and standards, the instrument provides researchers and clinicians with a robust tool to understand how different comparison strategies influence an individual’s body image, self-esteem, and overall psychological well-being. It measures not only the frequency of comparison but also the perceived discrepancy and the resulting affective consequences.

Construct

The CSS-A measures the psychological construct of differential engagement with comparison standards, focusing specifically on the frequency, perceived discrepancy, and resulting affective impact of these comparisons concerning physical appearance. The scale operationalizes comparison engagement across various standards:

• Social comparisons: Comparing oneself to others (e.g., friends, strangers).
• Temporal comparisons: Comparing oneself to one’s past or future self.
• Criteria-based comparisons: Comparing oneself to internal ideals or external norms.
• Dimensional comparisons: Assessing one’s appearance across different attributes.
• Counterfactual comparisons: Comparing oneself to hypothetical or “what-if” scenarios.

The core structural components of the scale separate these standards into two primary factors: Upward comparisons (comparing with standards perceived as better) and Downward comparisons (comparing with standards perceived as worse).

Validity

The validation study for the CSS-A provided evidence for both convergent and discriminant construct validity, confirming its ability to measure the intended psychological constructs accurately.

Convergent Construct Validity

Consistent with established psychological theory, CSS-A upward comparisons were reported as more frequent than downward comparisons and were associated with negative affective impact. The intensity of comparisons, calculated by multiplying comparison frequency by perceived discrepancy, strongly predicted outcomes: high intensity in upward comparisons predicted negative affective outcomes, while high intensity in downward comparisons predicted positive affective outcomes.

This relationship was partially mediated by appearance concern for upward comparisons—a composite measure reflecting appearance schemas and physical self-concept. For downward comparisons, the relationship was moderated by a measure of negativity, which was a composite score encompassing depression, anxiety, stress, and self-esteem.

Discriminant Construct Validity

The CSS-A demonstrated adequate discriminant validity, as findings indicated that the intensity of appearance-based upward social comparison had only a small inverse relationship with measures of general social rank. This suggests that the CSS-A is measuring a construct distinct from broader social status or standing.

Reliability

Internal Consistency

Analyses indicated acceptable internal consistency for the primary factors derived from the CSS-A. The reliability coefficient (Cronbach’s Alpha) for the upward factor was reported as α = .79, and for the downward factor, α = .71. These coefficients suggest that the items within each factor consistently measure the same underlying comparison direction.

Factor Analysis

The psychometric evaluation included both exploratory and confirmatory factor analysis to confirm the internal structure of the scale.

Exploratory Factor Analysis

During the initial exploratory factor analysis, two main factors corresponding to the upward and downward comparison directions were obtained. These two factors collectively explained 23.5% of the total variance, with the first factor accounting for 17.6% and the second factor accounting for 5.9%.

Confirmatory Factor Analysis

Following a refinement process that involved the removal of one item, an optimized bifactor model was tested using Confirmatory Factor Analysis (CFA). This model demonstrated an improved and excellent fit to the data, evidenced by the following key fit indices: χ² (207) = 341.79, p < .001; Root Mean Square Error of Approximation (RMSEA) = 0.047 (90% CI: 0.038–0.055); Standardized Root Mean Square Residual (SRMR) = .078; and Comparative Fit Index (CFI) = 0.964.

Instrument

Test Type: Original Inventory/Questionnaire

Format: The CSS-A is a self-report measure where participants rate their engagement with specified comparison standards (e.g., social familiar: a close friend). Participants rate the frequency of comparison for both the upward standard (looks better) and the downward standard (looks worse) over the past three weeks using a six-point Likert scale, ranging from 0 (not at all) to 5 (very often).

If a participant indicates a frequency greater than “0 – not at all”, they are subsequently asked two follow-up questions. First, they rate the degree of discrepancy with the standard using a six-point Likert scale (0 = not at all to 5 = much better/worse). Second, they indicate the extent to which the comparison resulted in feeling better or worse using a bipolar seven-point Likert scale for affective impact (-3 = much worse to +3 = much better).

Language Available: English (Original), German (Validated)

Population Group: Human; Male; Female

Age Group: Adulthood (18 years and older)

Population Details: The respondents were adult participants, predominantly students, located in Germany during the validation study.

Test Methodology: The psychometric validation involved rigorous testing, including Test Validity, Construct Validity, Convergent Validity, Discriminant Validity, Test Reliability, Internal Consistency, Factor Analysis, Confirmatory Factor Analysis, and Exploratory Factor Analysis.

Keywords

Appearance, Comparison Standards, Downward Comparisons, Upward Comparisons, Psychometric Scale, Self-Report Inventory.

Authors

Author ORCID Identifier:

• McCarthy, Peter A.: http://orcid.org/0000-0002-6740-6166
• Meyer, Thomas: http://orcid.org/0000-0001-7228-5365
• Back, Mitja D.: No data is Available
• Morina, Nexhmedin: No data is Available

Affiliation Email addresses:

• McCarthy, Peter A.: Institute of Psychology, University of Munster
• Meyer, Thomas: Institute of Psychology, University of Munster
• Back, Mitja D.: Institute of Psychology, University of Munster
• Morina, Nexhmedin: [email protected]

Correspondence Address: Morina, Nexhmedin: [email protected]

Permissions & Fee and Test Year

The CSS-A is a non-commercial instrument, and there is no fee associated with its use. Permissions for use can be obtained by contacting the corresponding author, Nexhmedin Morina.

Test Year: 2023

Reference’s

McCarthy, P. A., Meyer, T., Back, M. D., & Morina, N. (2023). How we compare: A new approach to assess aspects of the comparison process for appearance-based standards and their associations with individual differences in wellbeing and personality measures. PLoS ONE, 18(1), Article e0280072. https://doi.org/10.1371/journal.pone.0280072

Items of the Comparison Standards Scale for Appearance (CSS-A)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The CSS-A measure consists of 23 items. The specific items are not available in the provided text.

Factors and Subscales

The CSS-A is composed of two main subscales, which reflect the primary comparison directions assessed by the instrument:

• Upward comparisons: Focuses on comparisons against standards perceived as superior in appearance.
• Downward comparisons: Focuses on comparisons against standards perceived as inferior in appearance.