Standardized multi-item scales are more common in some disciplines than others. This 2-day course is designed to inspire participants from all disciplines that it is possible to develop your own high quality multi-item scales (or correctly adapt existing multi-item scales) and offers an introduction on how to do this. It covers the psychometric principles of question development while adding in principles of general questionnaire design. Focusing first on Classical Measurement Theory, participants design their own multi-item scales. This is followed by a group discussion of existing multi-item scales. The course then introduces some basic statistical tools for assessing the reliability and dimensionality of multi-item scales and participants get to practice evaluating some existing scales in a computer lab session. The course finishes with an introduction to Item Response Theory.

Prerequisite: There is no prerequisite, but a little knowledge about questionnaire design, multi-item scales and SPSS would be of value.