Time required for a person to reliably identify a simple stimulus
Inspection time refers to the exposure duration required for a human subject to reliably identify a simple stimulus. Typically a stimulus made up of two parallel lines differing in length and joined at the tops by a cross bar is presented (similar to the Greek letter Pi). The ability to quickly detect the identity of a stimulus is moderately heritable[1] and correlates with the subject's IQ.[2]
^Luciano, M.; Posthuma, D.; Wright, M.; Degeus, E.; Smith, G.; Geffen, G.; Boomsma, D.; Martin, N. (2005). "Perceptual speed does not cause intelligence, and intelligence does not cause perceptual speed". Biological Psychology. 70 (1): 1–8. doi:10.1016/j.biopsycho.2004.11.011. PMID16038769.
^Nettelbeck, T.; Lally, M. (1976). "Inspection Time and Measured Intelligence". British Journal of Psychology. 67: 17–22. doi:10.1111/j.2044-8295.1976.tb01493.x.