Dr Konstantinos Ioannidis is a Consultant Psychiatrist and Clinical Lead at the Southern Gambling Service, Southern Health NHS Foundation Trust, and an Honorary Associate Professor in Psychiatry at the University of Southampton. His research focuses on gambling disorder, problematic internet use, impulsivity, and compulsivity, with significant contributions to psychometrics and digital-behaviour assessment, including the development and validation of the ISAAQ-10. He has published extensively across psychiatry, addiction, and digital mental health, with over 4,000 citations and an h-index of 26. His work bridges clinical practice, measurement innovation, and public health approaches to behavioural addiction.

Abstract

Assessment and measurement of online gambling

Konstantinos will present new psychometric evidence supporting the ISAAQ‑10, designed to assess online gambling involvement within problematic use of the internet. Using Item Response Theory and modern validation methods, this work evaluates item functioning, measurement precision across the risk continuum, and the scale’s suitability for population surveillance and clinical screening. Findings highlight the ISAAQ‑10’s strong discriminatory capacity, making it a robust tool for capturing contemporary digital gambling behaviours.