Abstract
Four rats' choices between two levers were differentially reinforced using a runs-test algorithm. On each trial, a runs-test score was calculated based on the last 20 choices. In Experiment 1, the onset of stimulus lights cued when the runs score was smaller than criterion. Following cuing, the correct choice was occasionally reinforced with food, and the incorrect choice resulted in a blackout. Results indicated that this contingency reduced sequential dependencies among successive choice responses. With one exception, subjects' choice rule was well described as biased coin flipping. In Experiment 2, cuing was removed and the reinforcement criterion was changed to a percentile score based on the last 20 reinforced responses. The results replicated those of Experiment 1 in successfully eliminating first-order dependencies in all subjects. For 2 subjects, choice allocation was approximately consistent with nonbiased coin flipping. These results suggest that sequential dependencies may be a function of reinforcement contingency.
| Original language | English |
|---|---|
| Pages (from-to) | 61-80 |
| Number of pages | 20 |
| Journal | Journal of the Experimental Analysis of Behavior |
| Volume | 93 |
| Issue number | 1 |
| Publication status | Published - 2010 Jan |
| Externally published | Yes |
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ASJC Scopus subject areas
- Experimental and Cognitive Psychology
- Behavioral Neuroscience
Cite this
A runs-test algorithm : contingent reinforcement and response run structures. / Hachiga, Yosuke; Sakagami, Takayuki.
In: Journal of the Experimental Analysis of Behavior, Vol. 93, No. 1, 01.2010, p. 61-80.Research output: Contribution to journal › Article
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TY - JOUR
T1 - A runs-test algorithm
T2 - contingent reinforcement and response run structures.
AU - Hachiga, Yosuke
AU - Sakagami, Takayuki
PY - 2010/1
Y1 - 2010/1
N2 - Four rats' choices between two levers were differentially reinforced using a runs-test algorithm. On each trial, a runs-test score was calculated based on the last 20 choices. In Experiment 1, the onset of stimulus lights cued when the runs score was smaller than criterion. Following cuing, the correct choice was occasionally reinforced with food, and the incorrect choice resulted in a blackout. Results indicated that this contingency reduced sequential dependencies among successive choice responses. With one exception, subjects' choice rule was well described as biased coin flipping. In Experiment 2, cuing was removed and the reinforcement criterion was changed to a percentile score based on the last 20 reinforced responses. The results replicated those of Experiment 1 in successfully eliminating first-order dependencies in all subjects. For 2 subjects, choice allocation was approximately consistent with nonbiased coin flipping. These results suggest that sequential dependencies may be a function of reinforcement contingency.
AB - Four rats' choices between two levers were differentially reinforced using a runs-test algorithm. On each trial, a runs-test score was calculated based on the last 20 choices. In Experiment 1, the onset of stimulus lights cued when the runs score was smaller than criterion. Following cuing, the correct choice was occasionally reinforced with food, and the incorrect choice resulted in a blackout. Results indicated that this contingency reduced sequential dependencies among successive choice responses. With one exception, subjects' choice rule was well described as biased coin flipping. In Experiment 2, cuing was removed and the reinforcement criterion was changed to a percentile score based on the last 20 reinforced responses. The results replicated those of Experiment 1 in successfully eliminating first-order dependencies in all subjects. For 2 subjects, choice allocation was approximately consistent with nonbiased coin flipping. These results suggest that sequential dependencies may be a function of reinforcement contingency.
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UR - http://www.scopus.com/inward/citedby.url?scp=78149481951&partnerID=8YFLogxK
M3 - Article
C2 - 20676268
AN - SCOPUS:78149481951
VL - 93
SP - 61
EP - 80
JO - Journal of the Experimental Analysis of Behavior
JF - Journal of the Experimental Analysis of Behavior
SN - 0022-5002
IS - 1
ER -