Stimulus information as a determinant of reaction time.

  title={Stimulus information as a determinant of reaction time.},
  author={Ray Hyman},
  journal={Journal of experimental psychology},
  volume={45 3},
  • R. Hyman
  • Published 1 March 1953
  • Psychology
  • Journal of experimental psychology
In the typical reaction-time experiment, S's reaction time is greater when he has to respond differentially to one of two equally probable stimuli instead of to just one stimulus. In fact, Merkel (2), using one to ten alternatives, has demonstrated that when S has to respond to one stimulus chosen from a number of equally probable alternatives, his reaction time increases with the number of alternatives. The fact that S's response to stimulus A takes more time when A is one of several rather… 

Figures and Tables from this paper

The locus of stimulus probability effect in choice reaction time

A choice reaction time experiment was conducted in which subjects were to respond with one response to either of two stimuli, S1 and S2, and with another response to a third stimulus, S3. The stimuli

Choice Reaction Time as a Function of Stimulus versus Response Relative Frequency of Occurrence

This work has studied choice reactions to alternatives of unequal frequencies of occurrence in tasks with a 1 : 1 correspondence between stimuli and responses to find the answer to which variable is critical in determining the reaction time.

Choice Reaction Times for Skilled Responses*

Two kinds of choice reaction time experiments are reported, both of which make use of a highly overlearned sensori-motor response. When a response is required for each stimulus presented, no increase

Stimulus Categorization and Response Time

Two experiments were conducted in which the stimulus set was mapped onto the response set in a many-to-one-fashion and RT varied with the number of independent disjunctively combined attributes used to designate the critical category.

Stimulus probability and choice reaction time

Two experiments, in which three stimuli were paired with two responses in a 2:1, 1:1 arrangement, showed choice RT to be a decreasing function of the relative frequency of stimulus occurrence when

An informational approach to reaction times.

Prediction of choice reaction time from information of individual stimuli

A model is developed to predict the reaction time to stimuli using information content of the individual stimuli. Review of previous research in the area showed inconsistencies due possibly to the

A study of disjunctive reaction times

To decide what to do means to choose an appropriate response to a situation. In the simplest case, the situation may be one of several stimuli, to each of which there is a “correct response.” Other


An experiment is described which was designed to study the effects on rate or responding of (a) the frequencies of the various signals to which responses had to be made, and (b) the introduction of

Reaction time as a function of stimulus uncertainty on a single trial

In a discrete choice-reaction-time experiment, reaction times were measured between the onset of a light and the start of S’s pencil toward that light. The reaction time of unpracticed Ss, not aware



On the Rate of Gain of Information

The principal finding is that the rate of gain of information is, on the average, constant with respect to time, within the duration of one perceptual-motor act, and has a value of the order of five “bits” per second.