objective

In the context of psychism, this refers to forms of psychism that are perceived as if they are externally (e.g., objective clairaudience is perceived as if people are speaking nearby – which has only happened to me once), and to matters which are matters of fact, not opinion – e.g., whether the physical weather is cloudy or rainy.

More generally, this word may imply something that is measurable or a fixed fact not subject to interpretation – more literally, ‘external to the mind’. 

There was a ‘guide’ that I once read that objective clairaudience could be indicative of mental illness. This is a dangerous guide, as mental illness could be indicated by a wide range of things - mental health professionals are the people to consult on that, not simplistic guides! Furthermore, some perfectly sane people could have objective clairaudience. If you want some sort of guide, a better one I have read of is this: is the person in control of the clairaudience and the effect it is having on them, or is the clairaudience having an out of control effect? As you contemplate this, be aware that, according to this site, 4 to 10% of people ‘hear voices’ in some way, and this Psychology Today article says that one in three voice hearers need help, but others may find their voices helpful. (See here, also, for a suggestion for health professionals on this.)

See also "subjective".