sentences:  Weaver (1943) claimed that fixation durations—which ranged from 270–530 ms—lengthened when the notation was more compact and/or complex, as Jacobsen had found, but did not disclose whether slower tempos were used.Halverson (1974), who controlled tempo more closely, observed a mild opposite effect.Schmidt's (1981) participants used longer fixation durations in reading easier melodies (consistent with Halverson); Goolsby's (1987) data mildly supported Halverson's finding, but only for skilled readers.