### Abstract

In models of observational learning among Bayesian agents, informational cascades can result, in which agents ignore their private information and blindly follow the actions of other agents. This paper considers the impacts of two types of errors in such models: action errors, where agents occasionally choose sub-optimal actions and observation errors, where agents observe the action of another agent incorrectly. We investigate and compare the impact of these two types of errors on the agents' welfare and the probability of incorrect cascade. Using a Markov chain model, we derive the net payoff of each agent as a function of his private signal quality and the error rates. A main result of this analysis is that in certain cases, increasing the observation error rate can lead to higher welfare for all but a finite number of agents.

Original language | English (US) |
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Article number | 7039678 |

Pages (from-to) | 1917-1922 |

Number of pages | 6 |

Journal | Proceedings of the IEEE Conference on Decision and Control |

Volume | 2015-February |

Issue number | February |

DOIs | |

State | Published - Jan 1 2014 |

Event | 2014 53rd IEEE Annual Conference on Decision and Control, CDC 2014 - Los Angeles, United States Duration: Dec 15 2014 → Dec 17 2014 |

### Fingerprint

### ASJC Scopus subject areas

- Control and Systems Engineering
- Modeling and Simulation
- Control and Optimization

### Cite this

*Proceedings of the IEEE Conference on Decision and Control*,

*2015-February*(February), 1917-1922. [7039678]. https://doi.org/10.1109/CDC.2014.7039678

}

*Proceedings of the IEEE Conference on Decision and Control*, vol. 2015-February, no. February, 7039678, pp. 1917-1922. https://doi.org/10.1109/CDC.2014.7039678

**The impact of observation and action errors on informational cascades.** / Le, Tho Ngoc; Subramanian, Vijay G.; Berry, Randall A.

Research output: Contribution to journal › Conference article

TY - JOUR

T1 - The impact of observation and action errors on informational cascades

AU - Le, Tho Ngoc

AU - Subramanian, Vijay G.

AU - Berry, Randall A

PY - 2014/1/1

Y1 - 2014/1/1

N2 - In models of observational learning among Bayesian agents, informational cascades can result, in which agents ignore their private information and blindly follow the actions of other agents. This paper considers the impacts of two types of errors in such models: action errors, where agents occasionally choose sub-optimal actions and observation errors, where agents observe the action of another agent incorrectly. We investigate and compare the impact of these two types of errors on the agents' welfare and the probability of incorrect cascade. Using a Markov chain model, we derive the net payoff of each agent as a function of his private signal quality and the error rates. A main result of this analysis is that in certain cases, increasing the observation error rate can lead to higher welfare for all but a finite number of agents.

AB - In models of observational learning among Bayesian agents, informational cascades can result, in which agents ignore their private information and blindly follow the actions of other agents. This paper considers the impacts of two types of errors in such models: action errors, where agents occasionally choose sub-optimal actions and observation errors, where agents observe the action of another agent incorrectly. We investigate and compare the impact of these two types of errors on the agents' welfare and the probability of incorrect cascade. Using a Markov chain model, we derive the net payoff of each agent as a function of his private signal quality and the error rates. A main result of this analysis is that in certain cases, increasing the observation error rate can lead to higher welfare for all but a finite number of agents.

UR - http://www.scopus.com/inward/record.url?scp=84988214420&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84988214420&partnerID=8YFLogxK

U2 - 10.1109/CDC.2014.7039678

DO - 10.1109/CDC.2014.7039678

M3 - Conference article

AN - SCOPUS:84988214420

VL - 2015-February

SP - 1917

EP - 1922

JO - Proceedings of the IEEE Conference on Decision and Control

JF - Proceedings of the IEEE Conference on Decision and Control

SN - 0191-2216

IS - February

M1 - 7039678

ER -