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Andrew Allen White
Submitted By: Andrew A White
Submitted: Nov 29, 2016
Last Updated: Nov 29, 2016
37 Downloads (10 Downloads in the last 3 months)

​The FN3D_V3 model has three main levels: person, household, and system. Inter-related person- and household-level methods represent birth, death, and the creation/dissolution of male-female pair bonds (note: the terms “pair bond” and “marriage” are used inter-changeably in this description and denote the same behavior in the model). These methods and their inter-relationships were informed by data from ethnographic hunter-gatherers.

Many parameters in the model are continuously variable, allowing the model to be used to “sweep” through a range of values and observe how differences in parameters are related to model behavior. The dependency ratio (the ratio of consumers to producers in a household) is a key variable in many economic decisions embedded in the methods.

This model is not intended to represent all details of any particular hunter-gatherer system. The exclusion of extraneous detail is a purposeful strategy to aid in constructing a model whose structure and behavior are understandable. The representations in the model are generic and broadly applicable to a variety of hunter-gatherer systems.

FN3D_V3 is an altered version of the FN3D_V2 model described by White (2014).

FN3D_V3 was built using Repast Simphony.

The documentation provides (1) a description of the representations of time and the entities (persons, households, social links) in the model; (2) a brief overview of the major groups of methods in the model (pair bond, reproduction, and mortality); (3) model-level variables, parameters, and lists; and (4) a detailed description of the “rules” and the operations of the model with specific numeric reference to sections of the code.

This model is associated with a publication:

This version of the ForagerNet3_Demography model was used for a paper titled "The Sensitivity of Demographic Characteristics to the Strength of the Population Stabilizing Mechanism in a Model Hunter-Gatherer System" in Uncertainty and Sensitivity Analysis in Archaeological Computational Modeling, edited by Marieka Brouwer Burg, Hans Peeters, and William Lovis, pp. 113-130. Switzerland: Springer International.

Cite This Model:
White, Andrew Allen (2016, November 29). "ForagerNet3_Demography_V3" (Version 1). CoMSES Computational Model Library. Retrieved from:
Model Version: 1 [Latest]
Version Notes:

Platform: Repast Simphony
Programming Language: Java
Operating System: Microsoft Windows
Instructions on Running This Model:

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