pretest-posttest
UK[ˈpriːtest ˈpəʊsttest]US[ˈpriːtest ˈpoʊsttest]
n
A research design or measurement taken both before (pretest) and after (posttest) an intervention or event to assess change.
adj
Of or relating to such a design or measurement.
Morpheme Breakdown
pre
test
post
test
pre
before
test
trial
post
after
test
trial
Etymology
The compound term 'pretest-posttest' is a modern methodological construct built entirely from classical Latin elements. The prefix 'pre-' (from Latin prae) and the root 'test' (from Latin testari, 'to bear witness') combine to form 'pretest', literally a 'witnessing before'. This is symmetrically paired with 'posttest', where the prefix 'post-' (from Latin post) signifies 'after'. The logic is transparently spatial and temporal: the two 'test' events bookend an intervention, serving as witnesses to the state of affairs before and after. This compound elegantly encapsulates the core comparative logic of experimental and quasi-experimental research design.
Analysis
Structure: pre (before) + test (trial) + post (after) + test (trial)
- pre: Latin origin, a prefix meaning 'before, prior to'.
- test: Latin origin (from testum, 'earthen pot', later 'witness'), here meaning 'trial, examination'.
- post: Latin origin, a prefix meaning 'after, behind'.
- test: (Repeated) Same as above.
Examples
The study used a pretest-posttest design to evaluate the training program's effectiveness.
A significant difference was found between the pretest and posttest scores.
Researchers administered the survey as both a pretest and a posttest.