Types of research...

Research Methodology includes:-

i- Experimental -- most conclusive of all methods
                        -- dependent & independent variables

ii- Correlational -- cause and effect 

iii- Causal comparative -- determines the cause or consequence between group of people

iv- Survey - obtains data to determine specific characteristics of a group

v- Ethnographic -

vi- Historical

vii - Action research - must alert with the group focus to overcome the problem
                                - always reflect and test

viii- Case study - qualitative or mixed method research