Motivation, intentionality, and mind wandering: Implications for assessments of task-unrelated thought
Journal of Experimental Psychology Learning Memory and Cognition (2015) - Comment
pubmed: 25730306  doi: 10.1037/xlm0000116  issn: 1939-1285  issn: 0278-7393 

Paul Seli, James Allan Cheyne, Mengran Xu, Christine Purdon, Daniel Smilek