Longitudinal research/study
DEFINITION 1: A data-collection strategy in which data are collected from the same participants at different points in time. The purpose is to draw conclusions about individual change over time.
SOURCE: Hickman, Richard (2013). Cambridge Handbook of Educational Abbreviations & Terms (C.H.E.A.T.), Faculty of Education, University of Cambridge.
HYPERLINK: https://www.educ.cam.ac.uk/people/staff/hickman/CHEAT_RichardHickman_6th_ed%20_2013.pdf
DEFINITION 2: Scientific study of the development of individual or collective behavior in order to highlight the characteristics of stages of changes compared to earlier stages.
SOURCE: IIEP Glossary, IIEP-UNESCO.
HYPERLINK: http://learningportal.iiep.unesco.org/en/glossary/Longitudinal%2520survey