Open Access. Powered by Scholars. Published by Universities.®

Medicine and Health Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Psychiatry and Psychology

Wilfrid Laurier University

2008

Articles 1 - 2 of 2

Full-Text Articles in Medicine and Health Sciences

Escalation Of Wheel Running: An Animal Model Of Non-Drug Addiction, Ali Gheidi Jan 2008

Escalation Of Wheel Running: An Animal Model Of Non-Drug Addiction, Ali Gheidi

Theses and Dissertations (Comprehensive)

Animal studies using the self-administration paradigm suggest that duration of drug access (Ahmed, 2005) and individual phenotype (Piazza, Deminiere, Le Moal and Simon, 1989) are important factors in the development of drug addiction. Wheel running in rats has been proposed as a model to study non-drug addictions (Eikelboom & Lattanzio, 2003). When first given ad lib wheel access, young male rats initially run at low levels (about 1000 wheel turns per night) and gradually increase this distance to high levels (about 5000 wheel turns per night) (Afonso and Eikelboom, 2003). Like with self-administration, duration of wheel access has been found …


List Composition Effects For Masked Semantic Primes: Evidence Inconsistent With Activation Accounts, Jennifer C. Major Jan 2008

List Composition Effects For Masked Semantic Primes: Evidence Inconsistent With Activation Accounts, Jennifer C. Major

Theses and Dissertations (Comprehensive)

Priming is the benefit that an event receives when its processing has been preceded by the processing of a related or identical event. Context effects on priming are evident when priming changes as a function of some feature of experimental trials. The most commonly explored context effect is that of relatedness proportion (RP), where it has often been shown that the magnitude of priming (semantic or repetition) is directly related to the proportion of related trials: Increasing the related trials results in greater priming. Although previously thought to depend on strategic processing, recent evidence of context effects from designs using …