Poster E23, Monday, March 27, 2:30 – 4:30 pm, Pacific Concourse
Reconsidering the face inversion effect: A state-strength approach
Robin I. Goodrich1, Andrew P. Yonelinas1; 1University of California, Davis
Face perception and recognition is more difficult when faces are inverted compared to when they are upright (i.e., the face inversion effect, FIE). Recent work has indicated that perceptual discriminations can be based on two functionally distinct processes: perceiving and sensing. However, whether the FIE impacts perceiving- or sensing-based perception is unknown. In the current study, we used confidence-based receiver operating characteristics (ROCs) to examine the effect of face inversion on perceiving and sensing for faces that had been either configurally or featurally manipulated. In Experiment 1, face inversion led to a reduction in the probability of discretely perceiving a difference, but did not impact sensing. Moreover, the FIE on perceiving was greater for faces with configural than featural changes. In Experiment 2, we replicated this pattern of results, albeit decreased in effect magnitude, for mono-oriented objects (i.e., buildings). In Experiment 3, we confirmed the earlier results and further verified that the findings based on ROC estimates of perceiving and sensing paralleled participants’ subjective reports of perceiving and sensing. Furthermore, the results showed that perceiving, but not sensing, responses were directly related to conscious access of detailed, veridical information about a specific change that had occurred. These findings not only extend our understanding of the FIE and the processes underlying face perception and recognition, but also provide a new perspective, via the use of a novel (ROC) method, on the dual processes that contribute to face processing.
Topic Area: EMOTION & SOCIAL: Person perception