Homo Urbanus

More

Jane Jacobs long ago argued that cities are the cradles of civilization and of economic development and that density and human interaction hold the key to economic progress. The findings of a major new study published in Science finds that density is a key factor in the emergence of modern human behavior.

Increasing population density, rather than boosts in human brain power, appears to have catalysed the emergence of modern human behaviour, according to a new study by UCL (University College London) scientists published in the journal Science. High population density leads to greater exchange of ideas and skills and prevents the loss of new innovations. It is this skill maintenance, combined with a greater probability of useful innovations, that led to modern human behaviour appearing at different times in different parts of the world.

In the study, the UCL team found that complex skills learnt across generations can only be maintained when there is a critical level of interaction between people. Using computer simulations of social learning, they showed that high and low-skilled groups could coexist over long periods of time and that the degree of skill they maintained depended on local population density or the degree of migration between them. Using genetic estimates of population size in the past, the team went on to show that density was similar in sub-Saharan Africa, Europe and the Middle-East when modern behaviour first appeared in each of these regions. The paper also points to evidence that population density would have dropped for climatic reasons at the time when modern human behaviour temporarily disappeared in sub-Saharan Africa.

Jump to comments
Presented by

Richard Florida is Senior Editor at The Atlantic and Director of the Martin Prosperity Institute at the University of Toronto. See his most recent writing at The Atlantic Cities. More

Florida is author of The Rise of the Creative Class, Who's Your City?, and The Great Reset. He is founder of the Creative Class Group.

Get Today's Top Stories in Your Inbox (preview)

A Breathtaking Tour Above the Moab Desert

Filmmaker Ian Cresswell rigs an HD camera atop a remote-controlled "octocopter" for some spectacular aerial views.


Elsewhere on the web

Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register. blog comments powered by Disqus

Video

Where Time Comes From

The clocks that coordinate your cellphone, GPS, and more

Video

Computer Vision Syndrome and You

Save your eyes. Take breaks.

Video

What Happens in 60 Seconds

Quantifying human activity around the world

Writers

Up
Down

More in National

From This Author

Just In