Abstract
Determining the effects of the activities carried out in out-of-school learning environments based on socio-scientific issues on the decision-making of the 7th grade students is the aim of this study. The embedded research design which is one of the mixed research design method was used. Twenty-one 7th grade students studying at a secondary school were included in this study. While “Adolescent Decision-Making Questionnaire” was used as the data collection tool, semi-structured interviews were held. Friedman Test and Wilcoxon Signed Ranks Test were used to analyze the data obtained from the adolescent decision-making scale. Content analysis was used to analyze data obtained from the semi-structured interviews. At the end of the research, it was confirmed that the activities carried out in out-of-school learning environments based on socio-scientific issues affect the decision-making processes, self-esteem levels and vigilance which is a positive coping style for decision-making of the students. Besides, it was concluded that the qualitative findings of the study supported the obtained results of the study as well.