Background
Thalassophobia severity screening scale (TSSS-20) is a self-report psychological assessment designed to measure fear, anxiety, discomfort, and avoidance related to deep bodies of water such as oceans, seas, lakes, and deep rivers. The scale evaluates emotional reactions, depth-related fears, avoidance behaviors, safety concerns, and discomfort associated with deep or unknown underwater environments.
Thalassophobia refers to an intense fear or discomfort involving deep water, large underwater spaces, darkness beneath the surface, sea creatures, strong waves, or the unknown aspects of the ocean. Individuals with stronger thalassophobia-related tendencies may experience anxiety when near deep water, difficulty entering oceans or lakes, avoidance of water-related activities, or distress caused by thoughts of underwater depth and unseen environments.
The TSSS-20 measures several dimensions including depth fear, water-related anxiety, avoidance patterns, emotional discomfort, and reactions to deep or unclear water environments. The assessment may help individuals better understand their emotional responses to oceans, lakes, and deep water settings, as well as how these fears may affect recreational, social, or travel-related activities.
Procedure
The assessment consists of 20 statements and typically takes 2–4 minutes to complete. You should respond to statements according to your thoughts, feelings, emotional reactions, avoidance tendencies, and behaviors related to deep water, oceans, lakes, rivers, and underwater environments.
Participation
This assessment is intended for adults and older adolescents interested in understanding their emotional and behavioral responses to deep water environments. Participation in this interactive version "thalassophobia test" is completely anonymous.
Scoring & Interpretation
Each item is rated using a five-point agreement scale. The assessment includes both forward-scored and reverse-scored items. Higher scores generally indicate stronger fear, anxiety, discomfort, avoidance, and emotional distress related to deep water or underwater environments.
Results include an Overall Index Score and scores for four dimensions: Depth Fear, Water Anxiety, Water Avoidance, and Water Discomfort.
Dimension scores are standardized to a 0–100 scale and interpreted using qualitative categories.
Overall results are classified into five interpretive ranges:
• Minimal (0–20)
• Mild (21–40)
• Moderate (41–60)
• High (61–80)
• Very High (81–100)
Thalassophobia Severity Screening Scale (TSSS) Questionnaire
Below is the Thalassophobia Severity Screening Scale (TSSS), a digitally adapted 20- items self-assessment questionnaire.
Sources
Deenz Psychometric Research Initiative. Thalassophobia Severity Screening Scale (TSSS-20). Experimental Psychometric Assessment Framework. 2023.Version History
2024-03-11|v1.0|Added multidimensional thalassophobia severity scoring support.
2026-02-22|v1.0|Added reverse-scored adaptive comfort item support.