His stride broke. Data stopped. He stared into the forcefield. A friend.
Inefficient phraseology, but he understood in the vernacular what was meant.

-Star Trek TNG The Descent Novelization by Diane Carrey

“I’ll give you the chip our father made. It contains much more than just emotions. It has memories. Memories our father wanted you to have.”

Star Trek The Next Generation: Descent (Pt I & II)

For example, feeling angry about an injustice could lead someone to take a positive action to correct it.