The effect of geometric and arithmetic progressions on demand for food under concurrent progressive-ratio and fixed-ratio schedules

Title
The effect of geometric and arithmetic progressions on demand for food under concurrent progressive-ratio and fixed-ratio schedules
Publication Date
2014
Author(s)
Cameron, Kristie E
Clarke, Katrina A
Bizo, Lewis
Starkey, Nicola J
Type of document
Conference Publication
Language
en
Entity Type
Publication
Publisher
New Zealand Association for Behaviour Analysis (NZABA)
Place of publication
online
UNE publication id
une:17440
Abstract
The aim of this study was to compare performance of 12 possums under concurrent progressive-ratio and fixed‐ratio schedules to investigate whether using different schedule and progression types would affect the determination of relative food preference. A progressive-ratio schedule was increased within (PR FR) or across sessions (PFR FR) and the alternative schedule remained constant. The progression of the incrementing schedule was also varied between a geometric sequence (basis 2), and an arithmetic sequence (step 5). The food pairs of berries and egg, and a barley mix and oats were tested. The parameters of the exponential (Hursh & Silberberg, 2008) and cross‐price demand (Hursh, Madden, Spiga, DeLeon, & Francisco, 2013) models predicted estimates that differed in their description of demand across schedules, progression and food type. Cross points were the most stable measure and showed that when preferred foods were available under the incrementing schedule higher cross points were observed.
Link
Citation
New Zealand Association for Behaviour Analysis 11th Annual Conference Programme, p. 9-9
Start page
9
End page
9

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