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PSTI HomeFAQFor TeamsResearchGet Started
PSTI HomeFAQFor TeamsResearchGet Started
PSTI HomeFAQFor TeamsResearchGet Started

PSTI Research

✅ Peer-reviewed

✅ UK-developed

✅ Ethically approved

PSTI Research

PSYCHOLOGICAL RESEARCH  

The Public Speaking Threats Inventory® (PSTI®) is a validated, time-efficient psychometric tool that assesses perceived threat in public speaking situations across three domains:

  • ‍Physiological arousal
    ‍    e.g., increased heart rate, sweating
  • ‍Self-Perceptions
    e.g., internal doubts, negative self-talk
  • ‍External Judgments
    ‍    e.g., fear of negative evaluation by others


Designed for both individuals and organisations, the PSTI provides clear, actionable insights in under 10 minutes— making it ideal for personal development, coaching, team training, and leadership growth.

Scientific Validation

The PSTI® was developed through rigorous academic research led by Dr Alexander McWilliam and colleagues, with findings published in the peer-reviewed journal Personality and Individual Differences (2025).

Validated in a UK sample of 1,118 adults

Robust factor structure confirmed through EFA and CFA

27 items across 3 distinct psychological domains

Excellent reliability (α =.89 total scale; .78–.87 domain scales)

Each item was carefully crafted to measure nuanced responses to public speaking. The tool has demonstrated strong construct validity and is suitable for both individual use and large-scale training or research.

Read the full article

Why it matters

63% of people fear public speaking. For those who are socially anxious, that fear rises to 97%. Not only is it extremely uncomfortable, but it can also hinder our ability to focus, and reduce overall performance in meetings, pitches, classrooms, and beyond.

The PSTI® helps you pinpoint which aspects of public speaking feel most threatening, allowing for interventions to be tailored to improve efficacy.

Whether you’re building personal confidence or supporting others, the PSTI® provides actionable insights that foster targeted development — not guesswork.

Data privacy & ethics

ThePSTI® was ethically approved for research and developed in full compliance with UK data protection standards.

🔒 All responses are anonymised before analysis and stored securely.
✅ GDPR-compliant data handling.
👤 Personal identifiers (e.g. name, email) are used only to deliver your report.
📊 Optional demographic questions are used only for anonymous research to improve the tool.

We are committed to privacy, transparency, and ethical use — and never share your data without your explicit consent.

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