From Wiktionary, the free dictionary
From post- + observation.
postobservation (not comparable)
- After observation.
postobservation (plural postobservations)
- An observation or assessment made after an experimental intervention or procedure.
2001, James H. McMillan, Sally Schumacher, Research in Education: A Conceptual Introduction, →ISBN, page 344:
These designs offer significant improvement over the pretest-posttest design because with a series of preobservations and postobservations, patterns of stability and change can be assessed more accurately.