Editing Face perception (section)

===Mirror test===
[[Gordon Gallup Jr.]] developed a technique in 1970 as an attempt to measure [[self-awareness]]. This technique is commonly referred to has the [[mirror test]].

The method involves placing a marker on the subject in a place they can not see without a mirror (e.g. ones forehead). The marker must be placed inconspicuously enough that the subject does not become aware that they have been marked. Once the marker is placed, the subject is given access to a mirror. If the subject investigates the mark ''(e.g. tries to wipe the mark off)'', this would indicate that the subject understands they are looking at a reflection of themselves, as opposed to perceiving the mirror as an extension of their environment.<ref name="Gallup">{{cite journal|author = Gallup, GG Jr.|title = Chimpanzees: Self recognition|journal = Science|volume = 167|pages = 86–87|year = 1970|doi = 10.1126/science.167.3914.86|pmid = 4982211|issue = 3914|bibcode = 1970Sci...167...86G|s2cid = 145295899
}}</ref> (e.g., thinking the reflection is another person/animal behind a window)

Though this method is regarded as one of the more effective techniques when it comes to measuring self-awareness, it is certainly not perfect. There are many factors at play that could have an effect on the outcome. For example, if an animal is biologically blind, like a mole, we can not assume that they inherently lack self awareness. It can only be assumed that visual [[self-recognition]], is possibly one of many ways for a living being to be considered as cognitively "self aware".