Although much research exists of students' alternative conceptions about evolution and natural selection, the way in which these vary in time and how scientific explanations change during instruction remains to be described and understood. Therefore, the main objective of this research is to characterise the nature of the change in student…

This dissertation aims to understand the contribution of schools to reducing bullying behaviors and, in turn, to examine the benefits for students of attending a school that effectively reduces bullying. In doing so, this dissertation contributes to the literature on bullying by (a) locating the school as a key environment in social-ecology of…