## Modeling the System Dynamics of Populations of Doves, Hawks and Law-Abiders

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### Description

This is a model of the population dynamics of three groups adopting dove, hawk and law-abider strategies. The model is taken from Chapter 3 of *Simulation for the Social Scientist*, by Gilbert and Troitzsch.

A vector integrator element ('*Proportions*') represents the proportions of the population adopting each of the three strategies, Dove (D), Hawk (H) and Law-Abider (L). A matrix data element '*PayoffMatrix*' contains payoffs for interactions between the three strategies. A fitness score (element '*Fitness*') is calculated by matrix multiplication of the payoff matrix and the proportions vector. A mean fitness (element '*MeanFitness*') of the whole population is calculated as the sum of the individual fitness scores of the population weighted by the respective population proportions. Rates of changes (element '*RatesOfChange*') are calculated based on current proportions of the three groups, the fitness scores of each group and the overall mean fitness.

### Additional Information

##### Keywords

Arrays, System dynamics

##### Categories

GoldSim Features & Capabilities, System Dynamics