Ryan Sager looks at the results of two recent studies that explore the ways in which cities, commonly lauded as bastions of diversity, actually incubate groupthink.
Sager discusses the results of studies on cell phone preference by researchers from the Norwegian telecom provider Telenor, and friendship networks at different sized colleges, conducted by researchers at Wellesley College and the University of Kansas, that demonstrate "'small town' thinking can crop up as easily in the megalopolis as in Palookaville."
In the latter study of friendship networks, which has been replicated at the city scale but not yet published, researchers reached a surprising conclusion. "'People would expect in bigger and more diverse places you'd come into contact with a bigger and more diverse set of people,' says lead researcher Angela Bahns, a social psychologist at Wellesley. 'But you find the exact opposite.'"
According to Sager, these findings make sense. "It's simple, really: We like people who are like us. Social scientists call it the 'similarity-attraction effect,' and it influences everything from whom we date and hire to where we choose to live. The bigger the pond, the more likely we are-consciously or not-to swim around until we find a group of like and like-minded people."
FULL STORY: How Big Cities Can Lead to Small Thoughts

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?
As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

The Five Most-Changed American Cities
A ranking of population change, home values, and jobs highlights the nation’s most dynamic and most stagnant regions.

Rethinking Computing: Researchers Tackle AI’s Energy Demands
USC researchers are reimagining how AI systems are trained and powered — through smarter algorithms, innovative hardware, and brain-inspired designs — to dramatically reduce computing’s energy footprint.

Amazon-Owned Robotaxis to Begin Testing in LA
Los Angeles will become the sixth city where Zoox is testing its autonomous vehicle technology.

New York MTA Says No More Borrowing, Will Cut Costs Instead
The agency says it won’t take out any new loans to finance its planned improvements and is finding other ways to cut costs.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
New York City School Construction Authority
Village of Glen Ellyn
Central Transportation Planning Staff/Boston Region MPO
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Regional Transportation Commission of Southern Nevada
Toledo-Lucas County Plan Commissions