TOWARD A COMMON PROCEDURE USING LIKERT AND LIKERT-TYPE SCALES IN SMALL GROUPS COMPARATIVE DESIGN OBSERVATIONS
DS 84: Proceedings of the DESIGN 2016 14th International Design Conference
Year: 2016
Editor: Marjanovic Dorian, Storga Mario, Pavkovic Neven, Bojcetic Nenad, Skec Stanko
Author: Guerra, A. L.; Gidel, T.; Vezzetti, E.
Series: DESIGN
Section: DESIGN THEORY AND RESEARCH METHODS
Page(s): 23-32
Abstract
Often, users’ opinions in small groups comparative observations are measured through Likert and Likert-type items-based questionnaires. Resulting data are analyzed in order to find any statistical difference whether positive or negative among the two conditions. Due to the confusion around Likert scales ordinal or interval nature, how to statistically analyze them, is still an open matter of discussion. Should it be a parametric or non-parametric approach? This article analyze the existing literature and propose an approach which aim is to avoid fragmentation in this type of research.
Keywords: computer aided design (CAD), design activities, design research, research methodologies and methods, experiment