Full Idea
Disposition and manifestation are the basic categories by means of which cause and effect are to be explained.
Gist of Idea
Causation should be explained in terms of dispositions and manifestations
Source
C.B. Martin (The Mind in Nature [2008], 07.8)
Book Reference
Martin,C.B.: 'The Mind in Nature' [OUP 2008], p.91
A Reaction
'Manifestation' sounds a bit subjective. The manifestation evident to us may not indicate what is really going on below the surface. I like his basic picture.