psychometric measurements
Definition
Psychometric measurements refers to the systematic quantification of psychological constructs through standardised scales, where individuals provide numerical or categorical ratings in response to written items. In this framework, scales such as the Depression Anxiety and Stress Scale capture self-reported experiences across dimensions including anxiety, stress, and depression, with item responses aggregated into factors that explain variance in multivariate response data. The statistical identification of these factors, whether through eigenvector-based exploratory factor analysis or Exploratory Graph Analysis, depends entirely on the pattern of correlations among item ratings provided by respondents. A central assumption is that psychometric items possess face validity, meaning they are worded to be uniformly understandable across a target population, so that numerical responses reflect the psychological constructs the scale was designed to measure. When applied to nearly 40,000 responses to the 42-item DASS on a 4-point Likert scale, EGA demonstrated superior recovery of the psychological organisation underlying depression, anxiety, and stress compared to conventional eigenvector-based approaches.
Sources: Stanghellini et al. (2024)
Related Terms
- network psychometrics (1 shared article)
- cognitive network science (1 shared article)
- network clustering (1 shared article)
- text analysis (1 shared article)
- semantic framing (1 shared article)
Applications
Psychometric Measurements and Network Psychometrics
Network psychometrics reconceptualises the factors identified through psychometric measurements as networks of interacting symptom components rather than reflections of latent variables. Exploratory Graph Analysis, a method within this framework, clusters items according to user ratings and can identify the number and structure of psychological factors present in psychometric data. Applied to DASS responses, EGA recovered the scale's three-factor structure of depression, anxiety, and stress more accurately than standard factor analytic methods.
Sources: Stanghellini et al. (2024)
Psychometric Measurements and Semantic Loadings
Semantic loadings extend psychometric measurements by quantifying how clusters of semantically related concepts in item texts are distributed across statistically derived psychometric factors. Because factors are determined by numerical ratings rather than by the wording of items, the relationship between semantic content and factor structure is not fixed in advance by scale designers. Semantic loadings, derived from Textual Forma Mentis Networks applied to the DASS, identified specific aspects of emotional dysregulation, emotional exhaustion, physical distress, and tension states within EGA-based psychometric factors in non-random ways.
Sources: Stanghellini et al. (2024)
