Variation in response functions : a source of measurement error in attitude research / Willem E. SarisSeries on sociometric researchQuality aspects of statistical data collection / Dirk SikkelIndividual parameters in response functions and structural equations / ed. by Bas van den PutteStatistical guidance for model modification in covariance structure analysis / Thomas Cornelis Wilhelmus LuijbenIssues of design and analysis of panels / Frank Johan Robert van de PolDevelopments and applications in structural equation modelling : proceedings of the twelfth meeting of the 'Working group structural equation modelling' ('AG Strukturgleichungsmodelle') at the Netherlands Central Bureau of Statistics in Heerlen, 4 and 5 april 1991 / ed. by J.J.G. Schmeets, M.E.P. Odekerken and F.J.R. van der PolCausal modelling in nonexperimental research : an introduction to the LISREL approach / Willem E. Saris, L. Henk StronkhorstDifferent text analysis procedures for the study of decision making / Irmtraud N. Gallhofer, Willem E. Saris, Marianne Melman edThe formulation of interviews using the program interv / W. Marius de Pijper, Willem E. Saris