Choice Blindness: The Incongruence of Intention, Action and Introspection
type: CreativeWork
description: This thesis is an empirical and theoretical exploration of the surprising finding that people often may fail to notice dramatic mismatches between what they want and what they get, a phenomenon my collaborators and I have named choice blindness. The thesis consists of four co-authored papers, dealing with different aspects of the phenomenon. Paper one presents an initial set of studies using a computerised choice procedure, and discusses the relation of choice blindness to the parent phenomenon of change blindness. Paper two is the most central paper of the thesis. In this study, participants were shown pairs of pictures of female faces, and were instructed to choose which face in each pair they found most attractive. In addition, on some trials, immediately after their choice, they were asked to verbally describe the reasons for choosing the way they did. Unknown to the participants, on certain trials, a double-card ploy was used to covertly exchange one face for the other. On these trials, the outcome of the choice became the opposite of what they intended. Counting across all conditions of the experiment no more than a fourth of all such manipulated trials were detected. But not only were the participants in the experiment blind to the manipulation of their choices, they also offered introspectively derived reasons for preferring the alternative they were given instead. A second major conclusion of this paper is that normal participants may produce confabulatory reports when asked to describe the reasons behind their choices. Paper three applies this form of analysis of introspection and confabulation to a second corpus of reports collected within the choice blindness paradigm. In this paper we use word-frequency and latent semantic analysis (LSA) to contrast the introspective reasons given in non-manipulated and manipulated trials, but very few differences between these two groups of reports were found. In paper four, passer-by shoppers in a local supermarket we…
abstract: This thesis is an empirical and theoretical exploration of the surprising finding that people often may fail to notice dramatic mismatches between what they want and what they get, a phenomenon my collaborators and I have named choice blindness. The thesis consists of four co-authored papers, dealing with different aspects of the phenomenon. Paper one presents an initial set of studies using a computerised choice procedure, and discusses the relation of choice blindness to the parent phenomenon of change blindness. Paper two is the most central paper of the thesis. In this study, participants were shown pairs of pictures of female faces, and were instructed to choose which face in each pair they found most attractive. In addition, on some trials, immediately after their choice, they were asked to verbally describe the reasons for choosing the way they did. Unknown to the participants, on certain trials, a double-card ploy was used to covertly exchange one face for the other. On these trials, the outcome of the choice became the opposite of what they intended. Counting across all conditions of the experiment no more than a fourth of all such manipulated trials were detected. But not only were the participants in the experiment blind to the manipulation of their choices, they also offered introspectively derived reasons for preferring the alternative they were given instead. A second major conclusion of this paper is that normal participants may produce confabulatory reports when asked to describe the reasons behind their choices. Paper three applies this form of analysis of introspection and confabulation to a second corpus of reports collected within the choice blindness paradigm. In this paper we use word-frequency and latent semantic analysis (LSA) to contrast the introspective reasons given in non-manipulated and manipulated trials, but very few differences between these two groups of reports were found. In paper four, passer-by shoppers in a local supermarket we…
author: Johansson, Petter
language: eng
keywords: Psychology (excluding Applied Psychology), Psykologi, Psychology, Filosofi, Philosophy, latent semantic analysis (LSA), intentional stance, folk psychology, change blindness, verbal report, self-knowledge, extrospection, introspection, action, Choice blindness, intention
date published: 2006
date modified: 2026-07-24T03:00:02Z
provider: University of Lund
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Department of Cognitive Science