“…A more detailed analysis of the topics under research reveals that some of the most recurrent themes in a number of the papers analysed (n = 27, 20.1%) are related to the interactions and discussions among the different participants, some of them in the context of online communities. These studies either analyse the nature or patterns of interactions between the participants (e.g., Nami, Marandi, and Sotoudehnama 2018;Sing and Khime 2006) or investigate their effects in supporting reflection (e.g., Jones and Ryan 2014; Mumford and Dikilitaş 2020), knowledge construction or learning transformation (e.g., Lee and Brett 2015;Wang, Chen, and Levy 2010) or, more broadly, the professional development of teachers (e.g., Liu 2012). The online communities, which are mainly used as a support for pre-service or beginning teachers (e.g., DeWert, Babinski, and Jones 2003;Hramiak 2010) or the continuous professional development of in-service teachers (e.g., Holmes 2013;Ribeiro et al 2014) are also the focus of some of the studies examined (n = 21, 15.7%).…”