Motivation

Motivation is why the Character wants what s/he wants. Each Action has a larger motivation, which is probably rooted in the Given Circumstances of the scene. Each individual Tactic that a character tries also has a motivation - most likely something about the moment just before it happens.

When a dramaturg, a director, your teachers, and your peers are critiquing your work, they will look at each moment, and ask "why did that happen?" For each moment, you should be able to point out a motivation, and give them an answer.

An effective motivation will propel the Action forward in a recognizable way. An ineffective motivation is one that's not actually believable, or doesn't ultimately serve the story.