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- Jensen_box abstract "The Jensen box was developed by University of California, Berkeley psychologist Arthur Jensen as a standard apparatus for measuring choice reaction time, especially in relationship to differences in intelligence.Since Jensen created this approach, correlations between simple and choice reaction time have been demonstrated in many hundreds of studies. Perhaps the best was reported by Ian Deary and colleagues, in a population-based cohort study of 900 individuals, demonstrating correlations between IQ and simple choice reaction time of –0.3 and –0.5 respectively, and of –0.26 with the degree of variation between trials shown by an individual. The Jensen box was also used on the Odd Man Out test.The standard box is around 20 inches wide and 12 deep, with a sloping face on which 8 buttons are arrayed in a semicircle, with a 'home' key in the lower center. Above each response button lies a small LED which can be illuminated, and the box contains a loudspeaker to play alerting sounds.Following Hick's law,reaction times (RTs) slow as a log2 of the number of choices are presented. Thus when all but one button is covered responses are fastest, and slowest when all 8 responses are available. Several parameters can be extracted: The mean 1-choice RT gives simple reaction time. The slope of the function across 1, 2, 4, and 8 lights gives the rate of information processing, and variance or standard deviation in RTs can be extracted to give a measure of response variability within subjects.Finally, the time to lift off the home button and the time to hit the response button can be measured separately, and these are typically thought of as assessing decision time, and movement time, though in the standard paradigm, subjects can shift decision time into the movement phase by lifting off the home button while the location computation is still incomplete. Masking the stimulus light can eliminate this artifact.Simple reaction time correlates around .4 with general ability, and there is some evidence that the slope of responding does also, so long as access to the stimulus is controlled.".
- Jensen_box thumbnail Jensen_box.gif?width=300.
- Jensen_box wikiPageID "19129909".
- Jensen_box wikiPageRevisionID "591663387".
- Jensen_box hasPhotoCollection Jensen_box.
- Jensen_box subject Category:Cognitive_tests.
- Jensen_box subject Category:Intelligence_tests.
- Jensen_box subject Category:Psychometrics.
- Jensen_box comment "The Jensen box was developed by University of California, Berkeley psychologist Arthur Jensen as a standard apparatus for measuring choice reaction time, especially in relationship to differences in intelligence.Since Jensen created this approach, correlations between simple and choice reaction time have been demonstrated in many hundreds of studies.".
- Jensen_box label "Boîte de Jensen".
- Jensen_box label "Jensen box".
- Jensen_box sameAs Boîte_de_Jensen.
- Jensen_box sameAs m.04jmt68.
- Jensen_box sameAs Q2923093.
- Jensen_box sameAs Q2923093.
- Jensen_box wasDerivedFrom Jensen_box?oldid=591663387.
- Jensen_box depiction Jensen_box.gif.
- Jensen_box isPrimaryTopicOf Jensen_box.
