the pre-testing in an experiment has a systematic effect on the main experimental results, regardless of what happens between the measurements.
RESEARCH PRE-TESTING BIAS (PRE-MEASUREMENT ERROR OR MAIN TESTING EFFECT)
Meaning of RESEARCH PRE-TESTING BIAS (PRE-MEASUREMENT ERROR OR MAIN TESTING EFFECT) in English
Raynet Business and Marketing English glossary. Английский глоссарий компании Raynet Business and Marketing . 2012