• Publications
  • Influence
Effects of truncation on reaction time analysis.
  • R. Ulrich, J. Miller
  • Psychology, Medicine
  • Journal of experimental psychology. General
  • 1 March 1994
Many reaction time (RT) researchers truncate their data sets, excluding as spurious all RTs falling outside a prespecified range. Such truncation can introduce bias because extreme but valid RTs mayExpand
Jackknife-based method for measuring LRP onset latency differences.
A new method based on jackknifing is presented for measuring the difference between two conditions in the onset latencies of the lateralized readiness potential (LRP). The method can be used withExpand
Using the jackknife-based scoring method for measuring LRP onset effects in factorial designs.
Miller, Patterson, and Ulrich (1998) introduced a jackknife-based method for measuring the differences between two conditions in the onset latencies of the lateralized readiness potential (LRP). TheExpand
Automatic and controlled stimulus processing in conflict tasks: Superimposed diffusion processes and delta functions
An elaborated diffusion process model (a Diffusion Model for Conflict Tasks, DMC) is introduced that combines conceptual features of standard diffusion models with the notion of controlled and automatic processes to account for a variety of distributional properties of reaction time in conflict tasks. Expand
Testing the race model inequality: An algorithm and computer programs
In divided-attention tasks, responses are faster when two target stimuli are presented, and thus one is redundant, than when only a single target stimulus is presented. Expand
On the optimality of serial and parallel processing in the psychological refractory period paradigm: Effects of the distribution of stimulus onset asynchronies
Within the context of the psychological refractory period (PRP) paradigm, we developed a general theoretical framework for deciding when it is more efficient to process two tasks in serial and whenExpand
Mental chronometry and individual differences: Modeling reliabilities and correlations of reaction time means and effect sizes
We used a general stage-based model of reaction time (RT) to investigate the psychometric properties of mean RTs and experimental effect sizes (i.e., differences in mean RTs). Using the model,Expand
Preparing for Action: Inferences from CNV and LRP
Abstract The execution of efficient motor actions is often preceded by preparation in the central nervous system. Although this kind of preparation cannot be observed directly, it, nevertheless,Expand
On the locus of speed-accuracy trade-off in reaction time: inferences from the lateralized readiness potential.
Lateralized readiness potentials (LRPs) were used to determine the stage(s) of reaction time (RT) responsible for speed-accuracy trade-offs (SATs). Speeded decisions based on several types ofExpand
Threshold models of temporal-order judgments evaluated by a ternary response task
  • R. Ulrich
  • Psychology, Medicine
  • Perception & psychophysics
  • 1 May 1987
This article examines various predictions of temporal-order judgment models (triggered-moment, attention-switching, and perceptual-moment models). These model tests are based on a ternaryExpand