Introduction : approaches to data collection and data analysis / Glynis M. Breakwell -- Experimental research designs / Lorne Hulbert -- Measuring optimistic bias / Chris Fife-Schaw & Julie Barnett -- A quasi-experimental study of stereotyping / Adam Rutland -- The design and analysis of quasi-experimental field research / Eamonn Ferguson & Peter Bibby -- The impact of social value orientation on decision making in social dilemmas : a survey exercise / Mark van Vugt & Richard H. Gramzow -- On using questionnaires to measure attitudes / Geoffrey Haddock -- Modelling identity motives using multilevel regression / Vivian L. Vignoles -- The analysis of equivocation in political interviews / Peter Bull -- Interpretative phenomenological analysis / Jonathan A. Smith & Mike Osborn -- Cognitive mapping : generating theories of psychological phenomena from verbal accounts and presenting them diagrammatically / Tom Farsides -- The multiple sorting procedure / Julie Barnett -- The laddering technique / Susan Miles & Gene Rowe -- Focus groups / Sue Wilkinson.