
Landscape Dynamics
The Dynamics of Conspicuous Consumption
Veblen Model: the Envy Rule
This is an exemplary model
that shows our approach in the context of an
intuitive and wellknown problem.
Primary sources: Friedman, 2001;
see also Friedman and Yellin, 1997, and
also Friedman and Yellin, 2001.
(See References.)
There are two basic flavors of conspicuous consumption,
as described in the literature: envy and pride.
For the present, we restrict attention to the envy model.
In our implentation of the model,
the initial distribution may be constructed.
(See the explanation below.)
Contents
 Explanation rev 5.x
 Explains the math, the interface, and recommended experiments
 Notes rev 5.x
 Explains the math, PDF format
 Applet rev 5.3
 The applet has been created with NetLogo 2.0.0.
 It will run in any browser that supports Java 1.4 applets.
 Pops up in a separate window, so explanation can be viewed here.
 NetLogo Model rev 5.3
 This page is the NetLogo program code, as plain text.
 If you have NetLogo 2.0.0 or higher, you may select this file,
then SaveAs Veblen.nlogo on your Desktop, and Open it in NetLogo.
 NetLogo Code rev 5.3
 This is the 284 line program for Veblen.
 Simulated Hump Movie
 Animated GIF of Veblen Rev 5.2, 300 KB download
 Shows a heap of consumers attracted to a delta function.
 Analytic Hump Movie
 Animation of the analytic solution, made with MATLAB and GIFfun.
 Follows closely the derivation in the Appendix.
 Two Trains Movie
 Animated GIF of Veblen Rev 5.2, 125 KB download
 Shows a two trains of consumers attracted to a delta function.
 References
 Annotated bibliography for conspicuous consumption.
Revised 29 April 2005 by Ralph Abraham
