Question

which of the following involves longitudinal approach of investigation

Answer 1

Longitudinal study is a quasi experimental research design that involves repeated observation of the same variables e.g(people) over long period of time often many decades.i.e(uses longitudinal data).It is often a type of observation study although they can also be structured as longitudinal randomized experiment.

Answer 2

Longitudinal approach of study involves the investigation regarding the time and long term changes that incur over some time period. Longitudinal studies focus on long-term effectiveness and satisfaction.