Poster Session F, Tuesday, March 26, 8:00 – 10:00 am, Pacific Concourse
Integration of Event Order and Duration during Movie Watching
Saebyul Lee1, Su Keun Jeong1; 1Korea Brain Research Institute
Knowing the order and duration of events is crucial for many aspects of everyday life. In the laboratory, however, researchers have investigated how humans process event order and duration information in isolation and limited approach has been made to integrate these two aspects of event processing. Here, we sought to examine the integration of temporal duration in event order memory by specifically asking whether duration information is reconstructed from event order at retrieval or whether it is already encoded in event representations. To this end, we asked participants to estimate temporal positions of experienced events (still images from a video-clip) on a bounded horizontal timeline. We found that the participants overestimated the duration between earlier events and underestimated the duration between later ones. This systematic distortion corresponds to previous duration perception literature showing logarithmic time perception, suggesting that the participants might have retrieved event duration and order directly from their event representations. To rule out the possibilities that this logarithmic pattern of duration judgments is due to a response bias or strategy use during reconstruction (e.g., serial dependency and proportion judgment), in the following experiment, we provided an unbounded timeline without an informative endpoint. Results showed that serial dependency of estimates disappeared when the participants could not use reference points and proportion judgment strategy. Nevertheless, the logarithmic pattern of estimation was still found. These results implicate that event duration and order are integrated in event representation and the post-hoc reconstructive process might not be necessary at duration retrieval.
Topic Area: LONG-TERM MEMORY: Episodic