volitional

His errors are volitional and are the portals of discovery.

But while the imitation is at first simply automatic, it becomes more and more volitional.

Our feelings and emotions are the fountains from which nearly all our volitional actions flow.

The volitional aspect of consciousness also is to some extent explicitly provided for in language.

Try to ascend a single flight of stairs, performing each elementary movement by a distinct volitional impulse.

The volitional character of such an act is therefore manifest.