The human visual system can represent an object's spatial structure with respect to multiple frames of reference. It can also utilize multiple reference frames to mentally transform such representations. Recent studies have shown that performance on some mental transformations is not equivalent: Imagined object rotations tend to be more difficult than imagined viewer rotations. We reviewed seve...

We examined how grammatical aspect and visual perspective taking (firstor third-person) influence the ability to imagine accomplishments. Our main prediction was that it would be easier to imagine completed (I had built the fence.) than ongoing events (I was building the fence.) because accomplishments include natural temporal end points. Slow cortical brain potentials were examined as an index...

In 4 experiments, the authors investigated spatial updating in a familiar environment. Participants learned locations of objects in a room, walked to the center, and turned to appropriate facing directions before making judgments of relative direction (e.g., "Imagine you are standing at X and facing Y. Point to Z.") or egocentric pointing judgments (e.g., "You are facing Y. Point to Z."). Exper...

Although sociolinguists have performed a valuable service in challenging folk theories about African American English (AAE), they also have unwittingly participated in the construction of sociolinguistic folklore about variation and change in AAE. Several examples of sociolinguistic myths are presented, including the supraregional myth, the change myth, and the social stratification myth. Data ...