08:30 - 10:00
Wed-B16-Talk VI-
Wed-Talk VI-
Room: B16
Chair/s:
Denise Stephan
Reshaping priming effects through response-deadline variation
Wed-B16-Talk VI-05
Presented by: Maximilian Wolkersdorfer
Maximilian Wolkersdorfer, Thomas Schmidt
University of Kaiserslautern-Landau
The method of response priming is a useful paradigm to investigate response-conflict on a visuo-motor level. The classical response paradigm demands participants to respond as quickly and as accurately as possible to a target stimulus preceded by a prime. The prime and the target can either be mapped to the same response (consistent) or to a different response (inconsistent). This usually leads to large priming effects in response times and error rates that increase with the stimulus-onset asynchrony (SOA) between prime and target. Previous studies of response times, pointing movements, and other measures indicate that the effect is based on prime-triggered response activation that is time-locked to prime onset and invariant with SOA. In this study, we impose different response-deadlines to accomplish three goals: 1) to alter the speed-accuracy tradeoff to move effects from RT to error rate or vice versa; 2) to reduce the variance in the respective dependent measure to increase power and precision. Analyzing the response time distributions by event-history analysis further allows us to trace the occurrence of priming effects over time. This way, we can 3) determine whether the onset of response priming effects in the distribution remains invariant when the response deadline is altered. We will report extensive data from eight participant based on >100 trials per condition and participant. We expect to see increasing priming effects in error rates as response deadlines are shortened, as well as decreased variance in response time effects.
Keywords: priming, speed-accuracy tradeoff, vision, perception, distributional analysis