Re: Night vision (Student question)

[Karl L. Wuensch]

Lots of possibilities -- distribution/density of rods, level of and rate of regeneration of rhodopsin (possibly related to diet -- eat carrots), clarity of any tissue through which light must pass on way to retina.  Or, maybe the brother and husband are just better guessers on the SAT.  ;-)  What most people describe as guessing yields better performance than would be expected by truely random guessing, and this applies to perceptual phenomena too (signal detection theory and all that). ----- Original Message ----- From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, November 06, 2000 6:15 AM Subject: Night vision (Student question) Folks, Are there any explanations for variations in the acuity of night vision from person to person (other than owning night vision goggles)?