“…The most important characteristics that influence these abilities are Paivio's scales of imagery and meaningfulness (Christian, Bickley, Tarka, & Clayton, 1978;Paivio, 1969Paivio, , 1976); Osgood's scales of evaluation, potency, and activity (Bradley & Baddeley, 1990;Contini & Whissell, 1992;Eysenck, 1976;Howard-Voyer & Whissell, 1994;Lamarche, Campbell, Matheson, & Whissell, 1993;Levonian, 1972;Osgood & Suci, 1955); word length (Lovatt & Avons, 2001); and frequency of use (Gregg, 1976). Even when these attributes are not part of the investigators' research object, there are at least two frequent occasions when the semantic and lexical equivalence of different word lists is essential: when using repeated measures or optimizing the sensitivity of measurements.…”