Economics at your fingertips  

Note on Idea Diffusion Models with Cohort Structures

Santiago Caicedo

Economica, 2019, vol. 86, issue 342, 396-408

Abstract: In this note I propose two alternative frameworks to study idea diffusion models with cohort structures. Both frameworks fix the Lucas (2009) aggregation mistake while keeping the analytical tractability of the model and its insights. The frameworks differ in their assumptions on the meeting process. I study first a continuous arrival process where agents meet at each point in time, and then a more commonly used Poisson process where meeting opportunities arrive stochastically at some given Poisson rate. I generalize the growth formula in Lucas (2009) and show that both models yield the same growth rate on a balanced growth path. Moreover, I show that the continuous arrival process can be viewed as the limit of Poisson processes where the meeting rate increases but the quality of meetings decreases.

Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: Track citations by RSS feed

Downloads: (external link)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link:

Ordering information: This journal article can be ordered from
http://www.blackwell ... bs.asp?ref=0013-0427

Access Statistics for this article

Economica is currently edited by Frank Cowell, Tore Ellingsen and Alan Manning

More articles in Economica from London School of Economics and Political Science Contact information at EDIRC.
Bibliographic data for series maintained by Wiley Content Delivery ().

Page updated 2019-12-07
Handle: RePEc:bla:econom:v:86:y:2019:i:342:p:396-408