Stefan Elbers

66 Chapter 2 Appendix 1. Continued Author (year) 1 2 3 4 5 6 7 8 9 10 Decision Monticone (2016) + + + + - - + + + - high Nagel (2009) - + + + ? - + + + - high Nicholas (2020) + + + + + + + + + - high Olason (2004) - + + - - + + + + - high Oslund (2009) - + - - ? + + + + ? high Persson (2012) - + + ? ? + + + + - high Pietilä-Holmner (2020) - ? + + + + + + + - high Reck (2017) - + + + + + + + + - high Richardson (1994) - - + ? ? + - + + - high Roche-Leboucher (2011) + + - + ? - - + + - high Semrau (2015) + + + + + + + + + + low Silvemark (2014) - + + + + + + + + - high Smeets (2008) + + + + - + + + + + high Spinhoven (2004) + + + - - + + + + ? high Stein (2013) + + + - - + + - + - high Steinmetz (2019) + + + ? ? - - + + - high Strobel (1998) - + + ? ? + + - + - high Tavafian (2011) + + + + + + + + + - low Thieme (2003) + + + - - + + + + - high Van der Maas (2015) - + + + - + + + + + high van Hooff (2010) + + + + - + + + + + high van Wilgen (2009) + + + - ? + + + + - high Vendrig (2000) - + + + + + + + + - high Verkerk (2011) + + + - - + + + + ? high Volker (2017) + + + + + + + + + + low Vowles (2011) + + + + + + + + + + low Wagner (2011) - - + + - + - + + ? high Westman (2006) - - + + ? + - - + - high Zhuk (2018) + + + ? ? + - + + - high