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Church Growth Modelling

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Modelling Church Growth using mathematics & computer simulation.

In 1904-5 Moriah chapel was the centre of massive church growth in Wales through a God-sent revival.

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Agent-Based Model of Church Growth

Agent-based models describe population and social change by examining the behaviour of individual people - the agents. In an agent-based model of revival growth you can see the behaviour of individual enthusiasts passing on the faith the unbelievers. The result is infectious church growth! How does an agent-based model work? How do they help understand the growth of the church? How do they compare with system dynamics models? Read blog.

Welcome to the website of Church Growth Modelling. This is a science website, so prepare to be challenged. Questions welcome. It is a Christian website promoting revival, so prepare to be challenged spiritually!



The Rise & Decline of British Methodism

Over the last 270 years the Methodist church in the UK has grown rapidly, stabilised and then declined. Its change in membership patterns is typical of denominations founded before the twentieth century, most of whom are now declining, perhaps to an eventual extinction.

One possible explanation is that rising institutionalism has dampened the fires of revival and the zeal for conversions, leading to denominations dominated by aging congregations who cannot replace losses in membership fast enough.
The institutional model of church growth is compared with Methodist membership data. The data fit is good, and an analysis of flows shows how a church dominated by conversion has slowly changed into a one dominated by aging. Suggestions are given for how the church can deal with decline now. Blog Post. See the details.

The Models - Quick Guide

Limited Enthusiasm Model.
Church grows through the activity of enthusiasts who alone are responsible for the recruitment/conversion of unbelievers into the church.
Congregational Models.
Applied to the individual congregation only. Designed to assist church leaders.
Limits to Church Growth Models.
Models to illustrate barriers to church growth.
Sociological Models.
Based on theories in the sociology of religion.
What is Church Growth?
The discipline that analyses why churches grow and decline.
Sociology, Methodology, Mathematics, Computer Simulation.
What's New?
Latest additions to website
Self Enhancing Resource Model
Agent-Based Model of an Epidemic
Institutional Model
Geopolitical Growth
Blog
Informal articles:
Churches or Political Parties: Who has the Largest Membership?
Rise and Decline of Western Civilisation
Modelling Secularisation
Why Revivals Stopped in the UK
Church Growth - It's a Disease!
Enthusiasts are "contagious Christians"
Revival threshold
extinction threshold
Limited Enthusiasm - Revival
Understanding the dynamics of revival by analogy with the spread of a disease.
Revival growth threshold - how a small number of enthusiasts can make a big difference.
Church of England Decline
Limited enthusiasm with demographics applied to Church of England attendance data
What will it take for the church to survive?
Limits to Church Growth
What limits the growth of congregations? Lack of demand, lack of supply by the churches?
A variety of models to explore possible limits to church growth.
Renewal
Limited enthusiasm with inactive believers renewed.
Renewal not evangelism is key to church growth.
Critical mass.
1904/5 Welsh Revival & Spiritual Life
Application of the Spiritual Life model to the last big revival in Wales.
Religion is modelled as a disease of variable infectiousness depending on the spiritual life of the church, spread by enthusiasts.
Under the Bonnet
What is "modelling"? What lies underneath a dynamical model - the technical details that get it to work?
Overview of modelling methodologies.
Introduction to system dynamics & agent based modelling.

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Church Growth Modelling