Aspartame demand in rhesus monkeys: effects of volume and concentration manipulations.

Aspartame demand in rhesus monkeys: effects of volume and concentration manipulations. Research Abstract Details 

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Aspartame demand in rhesus monkeys: effects of volume and concentration manipulations. Abstract Text:

Tammy Wade-Galuska,Chad M Galuska,Gail Winger,James H Woods,

Three rhesus monkeys' lever presses produced aspartame-sweetened water according to a fixed-ratio schedule. The response requirement was increased across sessions and a demand-function analysis was used to assess the reinforcing effectiveness of different magnitudes of aspartame by manipulating reinforcer duration (1 and 3s) in Phase 1 and concentration (0.3, 0.5, 0.7, and 1.0mg/ml) in Phase 2. When duration was manipulated, the number of aspartame deliveries was mainly a function of the response requirement rather than unit price (responses/duration), suggesting that changes in duration did not significantly affect the reinforcing effectiveness of aspartame. When concentration was manipulated and the lowest concentration excluded, consumption was best described by unit price (responses/concentration) in two monkeys and by the response requirement in the third. Although results from the concentration manipulation provide some evidence that consumption was modulated by unit price, the results overall suggest that scalar equivalence does not exist between the components of unit price; specifically, the response requirement exerted a larger influence than duration or concentration on total consumption. Finally, a normalized demand analysis revealed that aspartame is a more elastic commodity than food and drug reinforcers.

Aspartame demand in rhesus monkeys: effects of volume and concentration manipulations. Publishing Authors By Initials

T Wade-Galuska,CM Galuska,G Winger,JH Woods,

For similar water research abstracts see: water research

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Aspartame demand in rhesus monkeys: effects of volume and concentration manipulations. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Behavioural processes

VOLUME: 74

Page Numbers: 71-8

Journal Abbreviation: Behav. Processes

ISSN: 0376-6357

DAY: 6

MONTH: 10

YEAR: 2006

Aspartame demand in rhesus monkeys: effects of volume and concentration manipulations. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 7703854

Aspartame demand in rhesus monkeys: effects of volume and concentration manipulations. Keywords Mesh Terms:

KEYWORDS: Water

MESH TERMS: pharmacology

Chemical & Substance for Abstract: Aspartame demand in rhesus monkeys: effects of volume and concentration manipulations. Information

Substance Name: Water

Registry Number: 7732-18-5

Grant and Affiliation Information for Aspartame demand in rhesus monkeys: effects of volume and concentration manipulations.

AFFILIATION: Department of Pharmacology, University of Michigan, Ann Arbor, MI 48109, USA. twadegal@umich.edu

Country: Netherlands

AGENCY: United States NIDA

GRANT: DA 015449

ACRONYM: DA

MEDLINETA: Behav Processes

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