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Representation of the stages of processing in a typical reaction time paradigm. Mental chronometry is the scientific study of processing speed or reaction time on cognitive tasks to infer the content, duration, and temporal sequencing of mental operations.
Simple reaction time correlates with general cognitive ability, [4] and there is some evidence that the slope of responding on the Jensen box does as well. [2] Ian Deary and colleagues, in a population-based cohort study of 900 individuals, demonstrated correlations between IQ and simple choice RTs between –0.3 and –0.5. [ 4 ]
A Jensen box. The Odd-Man-Out Reaction Time test (OMO RT) is a test of reaction times that uses Arthur Jensen's testing apparatus, the Jensen box.The box is normally used for measuring choice reaction times in which the participant in the experiment is tested on their ability to recognize which of the eight lights of the Jensen box is illuminated, as quickly as possible. [1]
The four boxes test is a computer-based test used to measure reaction times. In the test, a black circle appears in one of four boxes on the screen, and the patient presses the corresponding key on the keyboard as quickly as possible. The next circle appears after 500 ms, until 52 circles have been exposed.
The effect has been used to create a psychological test (the Stroop test) that is widely used in clinical practice and investigation. [ 1 ] A basic task that demonstrates this effect occurs when there is a mismatch between the name of a color (e.g., "blue", "green", or "red") and the color it is printed in (i.e., the word "red" printed in blue ...
Choice reaction times (CRTs or RTs) were then recorded and compared between congruent and incongruent conditions. [1] Other variants of the Eriksen Flanker Task have used numbers, [4] color patches, [5] or arrows as stimuli. Also, although most Eriksen Flanker Tasks show the flankers on the left and right of the target, they can also be placed ...
Exceptions to Hick's law have been identified in studies of verbal response to familiar stimuli, where there is no relationship or only a subtle increase in the reaction time associated with an increased number of elements, [5] and saccade responses, where it was shown that there is either no relationship, [6] or a decrease in the saccadic time ...
The PVT is a simple task where the subject presses a button as soon as the light appears. The light will turn on randomly every few seconds for 5–10 minutes. The main measurement of this task is not to assess the reaction time (mental chronometry), but rather to see how many times the button is not pressed when the light is on [citation ...