Peter Hovmand's Work

We found 35 items
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Campus sexual assault

A very simple, one stock, simulation of campus sexist attitudes toward rape and initimate partner vi ... Read more
A very simple, one stock, simulation of campus sexist attitudes toward rape and initimate partner violence. The model was originally developed in 1998 and later translated into Stella. The model has a number of modeling errors, but at the time, proved useful for gaining insight into the dynamics of the system and developing an innovative prevention program.
sim927 runs, 31 downloads
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campus sexual assault community norms


diagram383 downloads
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MNH Strategic Model

Strategic model of country-level policies to reduce maternal and neonatal mortality.
sim745 runs
global health maternal survival neonatal survival


diagram328 downloads
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model325 downloads
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diagram323 downloads
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Human Ecological Systems (HES)

The purpose of this model is to (1) demonstrate a way to represent human development that includes i ... Read more
The purpose of this model is to (1) demonstrate a way to represent human development that includes individual resources, social networks, and spatial relationships within a single model of a formal feedback theory of development, (2) provide an approach to theory development that begins with a simple model and gradually includes more complex facets of social reality (e.g., social networks, location), and (3) illustrate its application to formally testing and comparing a theory over a wider range of assumptions that can inform the design of data collection and analysis to more accurately reflect the dynamics of human development and outcomes. The approach has a wide range of possible applications in theory development and community intervention design, research, and evaluation. Examples include school-based and community based positive youth development interventions, drug use/addiction and treatment in rural settings, community responses to domestic violence, neighborhood effects and interventions, homelessness, supports for ex-offenders released from prison or jail, and health inequities. Version 1.0 focuses on mainly working out a simple example of interactions between social networks and spatial relationships. The model (right) represents a formal theory of how people will move to be close to their nearest friend. Since friends are determined by a social network where people have different sets of friends, and people are in different locations, movement will depend on an interaction between each individual’s social network, the location of their friends, the distance to their friends, and identifying their nearest friend and comparing one’s present location to the location of one’s nearest friend. The model implements this with a random social network for 100 individuals randomly distributed in 100m by 100m coordinate space.
sim139 runs
human development social theory methodology social networks spatial relationships
model214 downloads
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model168 downloads
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Human Resiliency

Simple proof-of-concept model of human resiliency.
sim530 runs
model136 downloads
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model130 downloads
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test from cld to sad

model69 downloads
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Test cld

diagram67 downloads
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Bathtub demo

model10 downloads
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demo cld

diagram8 downloads
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sim133 runs

July 1, 2019 demo

model4 downloads
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Illustrates distribution of long tails in human services
sim36 runs
human services disparities
Prototype simulation model for emergency medicine training
sim36 runs
emergency medicine training

coflow demo

sim56 runs
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Coupled Natural Human (CNH) systems demonstration.
sim53 runs

Fit statistics (v4)

sim29 runs

Wellbeing Demo

sim65 runs


sim140 runs

Community Health Game

sim4 runs

Services concept model

sim30 runs


sim6 runs

Resilency (mobile version)

sim11 runs

IHN demo

sim36 runs

Maternal Health Game

sim7 runs


sim9 runs


sim10 runs

Class demo

sim1 run


sim12 runs

Sim App (Sim)

An interface that allows users to interact with a model.

Image of a sim

Sim apps allow users to interact with a model using buttons, sliders, knobs, tables, graphs, and storytelling. These interactions help users understand how parts of a system interact.

Interfaces are created by model authors in the Stella desktop software and can be uploaded to the isee Exchange.


A diagram that represents how elements in a system influence one another.

Image of a model

Models are mathematical representations of how elements in a system are connected and interact (e.g., ecosystems, organizations, supply chains). When running models on the Exchange, results can be viewed in output devices like graphs and tables.

Models appear in the isee Exchange directory when authors upload them from the Stella® desktop software or create them with Stella Online™.

Causal Loop Diagram (CLD)

A map that represents the feedback structure of a system.

Image of a CLD

CLDs are high-level maps that represents the feedback structure of a system and easily communicate the essence of a model. They appear in the isee Exchange when authors upload them from the Stella desktop software or create them with Stella Online™.