[en] Behaviour is usually assumed to depend on the reach of a critical intensity—termed reactivity threshold—by its motivation. This view represents a simple, predictive theoretical framework in ethology and psychology. However, it is here argued that only the influence of an isolated motivation on behaviour can be explained that way; that such a view fails to account for behaviour when several motivations are jointly activated. Upon analysis, the 'classical' theory of behaviour proves to be under-specified and thus leads to three conceptual problems that make it logically inconsistent for the study of multiple motivations. A revision of the 'classical' théory, called Anticipatory Dynamics Model (ADM), is then developed in order to bring a theoretical solution to these conceptual problems. The ADM hypothesizes that an organism’s motivational interactions are due to the limitation of the organism’s attentional resources. Several experiments are designed to test major predictions of the ADM.Tout comportement est censé dépendre du fait que sa motivation atteint une valeur critique d'intensité appelée seuil de réactivité. Cette approche constitue un cadre théorique simple et prédictif aussi bien en éthologie qu'en psychologie. Cependant, je tente de montrer que seule l'influence d'une motivation isolée sur le comportement peut être expliquée de cette façon ; que cette approche cesse d'être applicable lorsque plusieurs motivations sont activées simultanément. Après analyse, cette théorie 'classique' s'avère sous-spécifiée et conduit à trois problèmes conceptuels qui la rendent logiquement inconsistante pour l'étude des motivations multiples. Une révision de cette théorie 'classique', appelée Modèle de Dynamique Anticipatoire (MDA), est ainsi développée en vue d'apporter une solution théorique à ces problèmes conceptuels. Le MDA fait l'hypothèse que les interactions motivationnelles d'un organisme sont causées par la limitation de ses ressources attentionnelles. Plusieurs expériences ont été imaginées pour tester des prédictions importantes du MDA.
Disciplines :
Neurosciences & behavior
Author, co-author :
Anselme, Patrick ; Université de Liège - ULiège > PSCO - FAPSE - Département des sciences cognitives
Language :
French
Title :
Contribution théorique à l'étude des motivations multiples
Alternative titles :
[en] Theoretical contribution to the study of multiple motivations
Defense date :
18 October 2007
Institution :
Université de Liège
Degree :
Doctorat en sciences psychologiques et de l'éducation
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