Linguistic frame of reference
Intrinsic frame of reference is a binary spatial relation in which the location of an object is defined in relation to a part of another object (its side, back, front, etc.). For instance, "The cat is in front of the house" means that the cat is at that part of the house that is its front, the side of the house that faces the street and has an entrance and maybe a porch.
Absolute frame of reference is also a binary system in which the location of an object is defined in relation to arbitrary fixed bearings, such as cardinal directions (North, South, East, West). For instance, “The cat is to the south of the house” has the location of the cat described independently of the position of the speaker or of any part of the house (as in intrinsic frame of reference). Apart from cardinal directions, fixed bearings such as seacoast, upriver/downriver, and uphill/downhill/across are also used.
Relative frame of reference is a ternary system. The location of an object is expressed in relation to both the viewpoint of the perceiver and position of another object. Thus, “The cat is to the left of the house” refers to three points of reference: the cat, the house, and the perceiver himself.
People can use multiple frames of reference in communication. For instance, in English, all three frames of reference are available and used, but the use of absolute frame of reference is limited to topographic objects ("Finland is to the east of Sweden"). The preferred frame of reference is the relative one.
Examples of languages that rely largely on intrinsic frame of reference, for instance, are Mopan (a Mayan language) or Totonac (a Totonacan language).
The use of different frames of reference has a far-reaching effect on the cognition. For instance, to be able to communicate in a language with absolute frame of reference the speakers have to run a kind of a mental compass, a remarkable neurocognitive capacity allows speakers to identify cardinal directions, even in unfamiliar locations.