How to read a digital footprint

Researchers are using social media data to build a picture of the personalities of millions, changing core ideas of how psychological profiling works. They say it could revolutionise employment and commerce, but the work must be done transparently.

 

Your searches and statuses are all reflections of questions, experiences and emotions you have: all psychometric data. It’s the basis for a future where computers can truly interact with human beings.
   - John Rust

In 2007, Dr David Stillwell built an application for an online networking site that was starting to explode: Facebook. His app, myPersonality, allowed users to complete a range of psychometric tests, get feedback on their scores and share it with friends. It went viral.

By 2012, more than six million people had completed the test, with many users allowing researchers access to their profile data. This huge database of psychological scores and social media information, including status updates, friendship networks and ‘Likes’, is the largest of its kind in existence. It contains the moods, musings and characteristics of millions – a holy grail of psychological data unthinkable until a few years ago.

Stillwell and colleagues at Cambridge’s Psychometrics Centre provided open access to the database for other academics. Academic researchers from over 100 institutions globally now use it, producing 39 journal articles since 2011.

Meanwhile, the Cambridge Psychometrics team devised their own complex algorithms to read patterns in the data. Resulting publications caused media scrums, with a paper published in early 2015 generating nervous headlines around the world about computers knowing your personality better than your parents.


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Image: Footprints
Credit: malavoda

Reproduced courtesy of the University of Cambridge

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