Measure for Measure: A two study multi-trait multi-method investigation of construct validity in IS research

  • Authors:
  • Ana Ortiz De Guinea;Ryad Titah;Pierre-Majorique Léger

  • Affiliations:
  • -;-;-

  • Venue:
  • Computers in Human Behavior
  • Year:
  • 2013

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Abstract

Given the importance and criticality of instrument validation in IS research, the main objective of this study is to provide a systematic assessment of IS construct validity via multi-trait multi-method (MTMM) matrix. To do so, the paper uses structurally different methods - neurophysiological and self-reported instruments - to measure three important and commonly used IS constructs: engagement, arousal and cognitive load in two different experimental settings. The experiments involved seventeen (17) and twenty-four (24) participants respectively and consisted in using different IS to execute a set of both instrumental and hedonic tasks. The results generally support MTMM matrix expectations and shed light on the complexity of detecting the nature of mono-method bias. Specifically, the results show that primitive perceptual IS constructs such as arousal seem to be less affected by mono-method bias, whereas more complex perceptual constructs such as engagement or cognitive load have higher within method correlations. There are two complementary explanations for the within method correlations: (a) a combination between complexity of trait and method and (b) method effects that are congeneric.