- Bulgaria
- Szederjesi, 2012
- Canada
- Quebec: Lesage and Swert, 1978; Reynolds and Reynolds, 1992
- Denmark
- Blakemore, 2007
- Georgia
- Bakhtadze et al., 2008
- Greece
- Szederjesi and Csuzdi, 2012
- Iceland
- Blakemore, 2007b
- Madeira
- Talavera, 1996
- Norway
- Blakemore, 2007.
- Russia
- Perel, 1979; Perel-Vsevolodova, 1997; Blakemore, 2007c
- Serbia
- Milutinovic, 2010
- Sweden
- Blakemore, 2007
- Turkey
- Omodeo and Rota, 1989
- United Kingdom
- Sims and Gerard, 1999; Scotland: Carpenter, 2011
- United States
- Reynolds, 1995
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Data are not exhaustive. The database is permanently a work in progress.