The triangulation of data in researches increases
the reliability and validity[3]. Therefore mixed
methods are usually preferred [7]. When Table 2 is
examined, it can be seen that researchers collected
data using interviews, class observation, open ended
questions, multiple choice, free writing and role play.
Among the studies, 9 were found to include multiple
methods of data collection.
The data collection techniques and methods of
analysis used in the studies were conducted to
determine how socio-scientific issue decision making
is enhanced.