In Gonzalo Rodriguez-Pereyra & Hallvard Lillehammer (eds.), Real Metaphysics
. Routledge. pp. 155-68 (2003
Dispositional essentialists claim that dispositional properties are essentially dispositional: a property would not be the property it is unless it carried with it certain dispositional powers. Categoricalists about dispositional properties deny this, asserting that the same properties might have had different dispositional powers, had the contingent laws of nature been otherwise.