Internal validity
how valid is what we measure and find out?
Construct validity
is the construct that you are developing what it should measure
Reliability
how reliable is the outcome
External validity
the extent to which you can generalize the findings of a study to other situations, people, settings and measures.
Convergent validity
Check if the questions we think reflect on 1 construct do
indeed reflect on that construct
Discriminant validity
Check if the questions we think reflect on 1 construct do NOT reflect on other constructs
Face validity
whether it measures what it claims to (at face value)