This is an electronic version of a book review published in the journal, Research in Mathematics Education [© Taylor and Francis] and the definitive version is available online at: http://www.tandfonline.com/doi/full/10.1080/14794802.2011.585836
No takes yet. Share an insight, caveat, or question.
Matthew Inglis (2011) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: