The Seen Anxiety: Psychotherapists' Classification of Text‐Described Observable Anxiety Markers Across Three‐ and Five‐Level Rating Formats

ABSTRACT Introduction Anxiety is central to the psychotherapy process, yet psychotherapists routinely infer a client's anxiety intensity from observable behaviour rather than from formal measurement, with no widely accepted framework to organise which observable markers indicate which levels of anxiety. This exploratory study examined how therapists make such classifications. Method Ninety‐one mental health professionals were randomly assigned to classify 41 text‐described behavioural and physiological markers using either a 5‐level or a simplified 3‐level category system, both derived from an integrated model of state anxiety in psychotherapy. Results Response distributions departed significantly from uniformity for nearly all markers in both formats, and the rank ordering of markers by intensity was highly consistent across formats, suggesting that therapists may share broad intuitions about relative marker intensity. Which markers elicited agreement, however, was far less reproducible, depending substantially on the response format. Convergence also depended on where the agreement criterion was set, declining from 90.2% to 51.2% of markers in the 3‐level format and from 63.4% to 22.0% in the 5‐level format as the criterion rose from > 0.50 to > 0.70. The 3‐level format yielded more classifiable markers at every criterion, although this advantage was not consistent across indices, whereas the 5‐level format elicited fewer ‘Insufficient to Determine’ responses. Markers placed at the highest intensity levels were classified most consistently. Discussion These findings offer preliminary groundwork for research on marker operationalisation, contextualised rating tasks and the development of training materials for psychotherapy process research.