Disfluent fonts don't help people solve math problems
Journal of Experimental Psychology General (2015) - Comment
pubmed: 25844628  doi: 10.1037/xge0000049  issn: 1939-2222  issn: 0096-3445 

Andrew Meyer, Shane Frederick, Terence C. Burnham, Juan D. Guevara Pinto, Ty W. Boyer, Linden J. Ball, Gordon Pennycook, Rakefet Ackerman, Valerie A. Thompson, Jonathon P. Schuldt