The irrelevancy of the inter-trial interval on delay-discounting experiments on an animal model of ADHD

SjØberg, Espen .A., Ramos, Sergio, López-Tolsa, Gabriela E., Johansen, Espen Borgå y Pellón Suárez de Puga, Ricardo . (2021) The irrelevancy of the inter-trial interval on delay-discounting experiments on an animal model of ADHD. Behavioural Brain Research, 408, 113236

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Título The irrelevancy of the inter-trial interval on delay-discounting experiments on an animal model of ADHD
Autor(es) SjØberg, Espen .A.
Ramos, Sergio
López-Tolsa, Gabriela E.
Johansen, Espen Borgå
Pellón Suárez de Puga, Ricardo
Materia(s) Psicología
Resumen Delay discounting involves choosing between a small, immediate reward, and a larger but delayed one. As the delay between choice and large reward gets longer, people with ADHD tend to become impulsive faster than controls, indicated by a switch in preference from the large to the smaller reward. Choosing the smaller reward when the larger is considered reward maximizing is labeled impulsive behaviour. It is well documented that increased delays between choice and reward affects choice preference in both humans and other animals. Other variables such as the inter-trial interval or trial length are observed to have an effect on human discounting, but their effect on discounting in other animals is largely assumed rather than tested. In the current experiment, we tested this assumption. One group of rats was exposed to increasing delays between choosing the large reward and receiving it, while another group experienced longer inter-trial intervals that were equal in length to the delays in the other group. This ensured that trial length was controlled for in delay discounting, but that the delay function and inter-trial intervals could be manipulated and measured separately. Results showed that while the delay between choice and reward caused impulsive behaviour in rats, the length of the inter-trial interval (and by extension trial length) had no impact on choice behaviour. A follow-up experiment found this to be the case even if the length of the inter-trial interval was signaled with audio cues. These results suggest that rats, and possibly animals in general, are insensitive to time between trials, and therefore cannot easily represent human counterparts on the task.
Palabras clave Delay discounting
Trial length
Animal testing
ADHD
Impulsivity
Patience
Editor(es) Elsevier
Fecha 2021-06-25
Formato application/pdf
Identificador bibliuned:DptoPBI-FPSI-Articulos-Rpellon-0001
http://e-spacio.uned.es/fez/view/bibliuned:DptoPBI-FPSI-Articulos-Rpellon-0001
DOI - identifier https://doi.org/10.1016/j.bbr.2021.113236
ISSN - identifier 0166-4328 - eISSN 1872-7549
Nombre de la revista Behavioural Brain Research
Número de Volumen 408
Publicado en la Revista Behavioural Brain Research, 408, 113236
Idioma eng
Versión de la publicación publishedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales The registered version of this article, first published in Behavioural Brain Research, is available online at the publisher's website: https://doi.org/10.1016/j.bbr.2021.113236
Notas adicionales La versión registrada de este artículo, publicado por primera vez en Behavioural Brain Research, está disponible en línea en el sitio web del editor: https://doi.org/10.1016/j.bbr.2021.113236

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Creado: Thu, 08 Feb 2024, 07:26:45 CET