Palm board and verbal estimates of slant reflect the same perceptual representation
Attention Perception & Psychophysics (2016) - Comment
pubmed: 26603041  doi: 10.3758/s13414-015-1029-8  issn: 1943-393x  issn: 1943-3921 

Dennis M. Shaffer, Ally Taylor, Eric McManama, Allyson Thomas, Echoe Smith, Phil Graves