<Tr> <Td> Marche </Td> <Td> 45,000 th </Td> </Tr> <Tr> <Td> Tisane </Td> <Td> 85,000 th </Td> </Tr> <P> Most studies looking at the word frequency effect use eye tracking data . When words have a higher frequency, readers fixate on them for shorter amounts of time . In one study, participants' eye movements were recorded as they scanned single sentence stimuli for topic relevant words . Researchers used an Eyelink eye tracker to record the movements of the participants' eyes . Reading times were found to be longer when focusing for comprehension due to increased average fixation durations . Results showed that reading for comprehension rather than scanning for certain words took longer fixations on the text . </P> <P> A second method used to measure the word frequency effect is electroencephalogram (EEG). The results collected using EEG data vary depending on the context of the word . Expected or high frequency words exhibit a reduced N400 response at the beginning of the sentence . This study found that predictable words showed a lower N400 amplitude, but did not find a significant effect of frequency . More research is needed to see how frequency affects EEG data . </P>

A fairly common way to test for the word frequency effect is to