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CHAPTER 54
Invariant Comparisons in
Affective Design
Fabio R Camargo, Brian Henson
University of Leeds
Leeds, UK
mnfrc@leeds.ac.uk
B.Henson@leeds.ac.uk
ABSTRACT
The principle of invariant comparisons is a key concept for verifying whether
the measurement of affective responses has been achieved. Invariant comparisons
show a valid evidence for the relationship between the mathematical properties on
numbers and the properties of the affective characteristic that is measured. An
empirical investigation demonstrated that the Rasch probabilistic model can
implement invariant comparisons across items with free sample distribution,
yielding a solid basis for inference. The research aimed to establish a common
metric for comparing ...