# Phenomenal Property

(Nida-Rümelin, 2010)[1] proposes the following definition.

Definition
A property ${\displaystyle P}$ is a phenomenal property if and only if having or not having that property at a given moment constitutes a difference in the phenomenology of the overall state of the subject concerned.

This definition is based on the assumption that "we have a quite clear intuitive grasp of what it is to constitute a difference for the phenomenology of the overall state a subject finds itself in at a given moment."[1] The instantiation of a phenomenal property so defined "partially characterizes what it is like for the subject to be in its (his or her) present state".[1]

# References

1. Martine Nida-Rümelin, What about the emergence of consciousness deserves puzzlement?, 2010