Historique
Périodique
A flicker paradigm for inducing change blindness reveals alcohol and cannabis information processing biases in social users
(L'étude du refus de la réalité à l'aide d'un paradigme visuel, révèle chez les usagers d'alcool et de cannabis des biais liés au traitement de l'information.)
Auteur(s) :
JONES, B. T. ;
JONES, B. C. ;
SMITH, H. ;
COPLEY N.
Année
2003
Page(s) :
235-244
Langue(s) :
Anglais
Refs biblio. :
30
Domaine :
Plusieurs produits / Several products
Note générale :
Addiction, 2003, 98, (2), 235-244
Note de contenu :
graph. ; ill.
Résumé :
FRANÇAIS :
Deux cent étudiants volontaires, usagers d'alcool ou de cannabis, ont été soumis à un test visuel pour identifier les biais liés au traitement de l'information par le sujet. Le test consiste en la présentation d'images vidéo concernant la consommation d'alcool ou de cannabis, sur lesquelles on note un changement neutre (pas en rapport avec la consommation) ou un changement significatif sur la notion de consommation. Les réactions des participants sont étudiées : les usagers lourds constatent les changements en lien avec la consommation plus rapidement que les usagers légers ou les non-usagers ; en revanche, pour les changements neutres, c'est l'inverse.
ENGLISH :
Aim: To apply a new paradigm using transient changes to visual scenes to explore information processing biases relating to "social" levels of alcohol and cannabis use. Participants: Male and female Student volunteers (n=200) not self-reporting substance-related problems. Setting: Quiet testing areas throughout the university campus. Design: A flicker paradigm, for inducing change blindness with lighter and heavier social users of alcohol (experiment 1, n=100) and social users and non- users of cannabis (experiment 2, n=100), explored the associations between habitual level of use and the latency to detection of a single substance-related or neutral change made to a scene of grouped substance-related and neutral objects. Measurements: Alcohol use was measured as the number of units of the heaviest drinking day from the previous week: cannabis use as the number of months of use in previous 12. Change-detection latency comparisons were used to evaluate processing biases. Findings: In both experiments, (i) heavier social users detected substance-related changes quicker than lighter and non-users: (ii) lighter and non-users detected substance-neutral changes quicker than heavier users; (iii) heavier social users detected substance-related quicker than substance-neutral changes ; and (iv) lighter and non-users detected substance-neutral changes quicker than substance-related changes. Conclusions: Alcohol and cannabis processing biases are found at levels of social use, have the potential to influence future consumption and for this reason merit further research. (Author' s abstract)
Deux cent étudiants volontaires, usagers d'alcool ou de cannabis, ont été soumis à un test visuel pour identifier les biais liés au traitement de l'information par le sujet. Le test consiste en la présentation d'images vidéo concernant la consommation d'alcool ou de cannabis, sur lesquelles on note un changement neutre (pas en rapport avec la consommation) ou un changement significatif sur la notion de consommation. Les réactions des participants sont étudiées : les usagers lourds constatent les changements en lien avec la consommation plus rapidement que les usagers légers ou les non-usagers ; en revanche, pour les changements neutres, c'est l'inverse.
ENGLISH :
Aim: To apply a new paradigm using transient changes to visual scenes to explore information processing biases relating to "social" levels of alcohol and cannabis use. Participants: Male and female Student volunteers (n=200) not self-reporting substance-related problems. Setting: Quiet testing areas throughout the university campus. Design: A flicker paradigm, for inducing change blindness with lighter and heavier social users of alcohol (experiment 1, n=100) and social users and non- users of cannabis (experiment 2, n=100), explored the associations between habitual level of use and the latency to detection of a single substance-related or neutral change made to a scene of grouped substance-related and neutral objects. Measurements: Alcohol use was measured as the number of units of the heaviest drinking day from the previous week: cannabis use as the number of months of use in previous 12. Change-detection latency comparisons were used to evaluate processing biases. Findings: In both experiments, (i) heavier social users detected substance-related changes quicker than lighter and non-users: (ii) lighter and non-users detected substance-neutral changes quicker than heavier users; (iii) heavier social users detected substance-related quicker than substance-neutral changes ; and (iv) lighter and non-users detected substance-neutral changes quicker than substance-related changes. Conclusions: Alcohol and cannabis processing biases are found at levels of social use, have the potential to influence future consumption and for this reason merit further research. (Author' s abstract)
Affiliation :
School of Psychology, Univ. of Andrews
Royaume-Uni. United Kingdom.
Royaume-Uni. United Kingdom.