• Publications
  • Influence
A Theory of Memory Retrieval.
TLDR
A theory of memory retrieval is developed and is shown to apply over a range of experimental paradigms, and it is noted that neural network models can be interfaced to the retrieval theory with little difficulty and that semantic memory models may benefit from such a retrieval scheme. Expand
The Diffusion Decision Model: Theory and Data for Two-Choice Decision Tasks
TLDR
The diffusion decision model is reviewed to show how it translates behavioral data accuracy, mean response times, and response time distributions into components of cognitive processing, including research in the domains of aging and neurophysiology. Expand
Methods for dealing with reaction time outliers.
  • R. Ratcliff
  • Mathematics, Medicine
  • Psychological bulletin
  • 1 November 1993
TLDR
It is concluded using quantitative examples that robust measures are much less affected by outliers and cutoffs than measures based on moments, and fitting explicit distribution functions as a way of recovering means and standard deviations is probably not worth routine use. Expand
Modeling Response Times for Two-Choice Decisions
The diffusion model for two-choice real-time decisions is applied to four psychophysical tasks. The model reveals how stimulus information guides decisions and shows how the information is processedExpand
A comparison of sequential sampling models for two-choice reaction time.
TLDR
Although there was substantial model mimicry, empirical conditions were identified under which the models make discriminably different predictions and the best accounts of the data were provided by the Wiener diffusion model, the OU model with small-to-moderate decay, and the accumulator model with long-tailed distributions of criteria. Expand
Group reaction time distributions and an analysis of distribution statistics.
  • R. Ratcliff
  • Mathematics, Medicine
  • Psychological bulletin
  • 1 May 1979
TLDR
It is shown that this method of averaging is exact for certain distributions (i.e., the resulting distribution belongs to the same family as the individual distributions) and Monte Carlo studies and application of the method provide evidence that properties derived from the group reaction time distribution are much the same as average propertiesderived from the data of individual subjects. Expand
Psychology and neurobiology of simple decisions
TLDR
Patterns of neural firing linked to eye movement decisions show that behavioral decisions are predicted by the differential firing rates of cells coding selected and nonselected stimulus alternatives, which provides a quantitative link between the time-course of behavioral decisions and the growth of stimulus information in neural firing data. Expand
Estimating parameters of the diffusion model: Approaches to dealing with contaminant reaction times and parameter variability
TLDR
It is argued that explicit modeling is an important method for addressing contaminants and variability in nondecision processes and that it can be applied in any theoretical approach to modeling reaction time. Expand
Inference during reading.
TLDR
The minimalist hypothesis is proposed, and it is argued that automatically encoded minimalist inferences provide the basic representation of textual information from which more goal-directed, purposeful inferences are constructed. Expand
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