Irini Moustaki is a Professor in Social Statistics in the Department of Statistics where she was awarded her PhD in 1996. Her main research interests are latent variable models, structural equation models, analysis of categorical data, methods of estimation, goodness-of-fit, detection of outliers and missing values. She has co-authored books on latent variable models and multivariate data analysis, published many methodological and applied papers and served as an associate editor and editorial member for a number of journals including Computational Statistics and Data Analysis, Structural Equation Modelling and the Journal of Educational and Behavioural Statistics. She has taught postgraduate courses on multivariate analysis and multilevel modelling designed for statistics and social science students and run professional short courses in UK and abroad. She is a member of the Technical Advisory Group of the PIAAC project I and II (Program for the International Assessment of Adult competencies) of the OECD. She has been elected Honorary Professor in the Department of Psychological Studies, at The Hong Kong Institute of Education in July 2015. She received an honorary doctorate from the University of Uppsala in January 2014 and elected the Executive Editor of Psychometrika in November 2014.