In an experiment, teachers' judgments are used to measure the amount of misbehavior among students. The teachers are more likely to judge a given behavior as misbehavior at the posttest than they are at the pretest. This example most clearly illustrates which threat to the internal validity of the experiment?

It illustrates INSTRUMENTATION as a threat to the internal validity of the experiment.

balearic sea - is a body of water in the mediterranean sea around the balearic islands. baltic sea - is a mediterranean sea of the atlantic which is enclosed by scandinavian and baltic countries. barents sea - is a marginal sea in the artic ocean located off the northern coast of norway and russia.