“…Many studies of familiar faces have shown that priming decreases when the study and test stimuli differ because of a change of viewpoint (e.g., Bruce & Valentine, 1985;Ellis, Young, Flude, & Hay, 1987) or picture format (Bruce, Burton, Carson, Hanna, & Mason, 1994). A reduction in priming with viewpoint changes between study and test has also been found for unfamiliar faces (e.g., Goshen-Gottstein & Ganel, 2000), although one study reported a similar amount of reaction time facilitation from identical and changed-viewpoint pictures across multiple repeated presentations (Hay, 2000). This exception aside, pose changes between study and test may account for some failures to find evidence of priming for unfamiliar faces (e.g., Campbell & DeHaan, 1998).…”