Once we have him, then I'll worry about the other things, the psychological motivation.

Other readers hold that Oliver's psychological motivations are beside the point.

But the more important problems here concern the Ripper's psychological motivation.

California Dream is the psychological motivation to gain fast wealth or fame in a new land.

But that doesn't change the psychological motivation behind the making of this video.

I cannot resist asking a few questions about the director's psychological motivation.

Human behavior and psychological motivation being complicated, he said that a sexual motive could not be ruled out.

Which explains revolutions by psychological motivation for taking part in political violence.

These seem to have a "psychological" motivation similar to that of the other type.

Other theories have also focused on the need to belong as a fundamental psychological motivation.