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ERIC Number: EJ862901
Record Type: Journal
Publication Date: 2009-Jan
Pages: 20
Abstractor: As Provided
Reference Count: 39
ISSN: ISSN-0022-5002
Response Allocation in Concurrent Chains when Terminal-Link Delays Follow an Ascending and Descending Series
Christensen, Darren R.; Grace, Randolph C.
Journal of the Experimental Analysis of Behavior, v91 n1 p1-20 Jan 2009
Eight pigeons were trained in a concurrent-chains procedure in which the terminal-link immediacy ratio followed an ascending or descending series. Across sessions, one terminal-link delay changed from 2 s to 32 s to 2 s or from 32 s to 2 s to 32 s, while the other was always 8 s. For all pigeons, response allocation tracked changes in delay and was biased towards the 8-s alternative on the descending series, indicating a hysteresis effect, and was more sensitive to changes in the terminal-link delay ratio for relatively long (greater than 8 s) than short (less than 8 s) delays. Both the hysteresis and effect of delay duration were predicted by an extended version of Grace and McLean's (2006) decision model. The extended decision model provided an overall better account of the results than a simple linear-operator model (Grace, 2002), and holds promise for an integrated account of choice in concurrent chains for both acquisition and steady-state conditions. (Contains 3 tables, 8 figures and 1 footnote.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A