About the Authors

Karolina Sylwester

karolina.sylwester@gmail.com

Affiliation Cognitive Science Research Group, Queen Mary University of London, School of Electronic Engineering and Computer Science, Mile End Road, London, United Kingdom

Matthew Purver

Affiliation Cognitive Science Research Group, Queen Mary University of London, School of Electronic Engineering and Computer Science, Mile End Road, London, United Kingdom

Competing Interests

Purver holds grants for language processing research including concept creation (ConCreTe) and dementia diagnosis (SLADE). The SLADE project is funded by the Queen Mary Innovation Fund; the project ConCreTe acknowledges the financial support of the Future and Emerging Technologies (FET) programme within the Seventh Framework Programme for Research of the European Commission, under FET grant number 611733. He co-founded the social media analytics company Chatterbox Labs Limited in 2011, and remains a shareholder; he is co-inventor on a pending patent application for language analysis for mental health diagnosis. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: KS MP. Performed the experiments: KS. Analyzed the data: KS MP. Contributed reagents/materials/analysis tools: KS MP. Wrote the paper: KS MP. Collected the data: KS.