- Positivity XI – Slovenia (2023)
- Positivity X – Pretoria, South Africa (2019)
- Positivity IX – Edmonton, Canada (2017)
- Positivity VIII – Chengdu, China (2015)
- Positivity VII – Leiden, Netherlands (2013)
- Positivity VI – El Escorial, Spain (2009)
- Positivity V – Belfast, Northern Ireland (2007)
- Positivity IV – Dresden, Germany (2005)
- Positivity III – Rhodes, Greece (2003)
- Positivity II – Nijmegen, Netherlands (2001)
- Positivity I – Ankara, Turkey (1998)