Funding for this research was provided by:
Agencia Estatal de Innovación of Spain (MTM2016-75140-P)
Xunta de Galicia (R 2016/022)
Alexander von Humboldt foundation (German research Chairs)
AIMS-Cameroon (German research Chairs and the Teacher Training Program, 2017-2018 Tutor fellowship)
Article History
Received: 9 November 2017
Accepted: 5 May 2018
First Online: 16 May 2018