This new four-volume collection tracks the development of statistical methods for continuous, or interval-scale data. Examples of such data occurring in the social sciences include indicators of educational attainment (for example, GCSE scores) and psychometric measures of intelligence. Framed by a new contextualising introduction, the volumes are organised thematically, covering key areas to enable a well-rounded and comprehensive understanding of the discipline: Volume One: Statistical Foundations for the Analysis of Continuous Data Volume Two: Basic Principles for the Statistical Modelling of Continuous Data Volume Three: Multivariate Analyses of Continuous Data Volume Four: Statistical Modelling of Multivariate Continuous Data