Full Idea
An action for a reason is one that is, in a special way, under the control of reason. It is a response to, not a mere effect of, a reason.
Gist of Idea
Actions are not mere effects of reasons, but are under their control
Source
Robert Audi (Action, Intention and Reason [1992], p.177), quoted by Rowland Stout - Action 6 'Alien'
Book Reference
Stout,Rowland: 'Action' [Acumen 2005], p.96
A Reaction
This modifies Davidson's 'reasons are causes'. Audi has a deviant causal chain which causes trouble for his idea, but Stout says he is right to focus on causal 'processes' (an Aristotelian idea) rather than causal 'chains'.