This energy source allows humans to enact defensive responses due to stress.

Brenner's defensive response told him the conversation was either being taped or overheard by others.

His most automatic defensive response is to say "I don't care."

This was a book Wallace wrote as a defensive response to the scientific critics of natural selection.

However, the habituation process in prairie dogs may depend on several factors including the particular defensive response.

Data implemented defensive and offensive responses to a possible attack.

"It's a defensive, antagonistic response where the victims are treated like the enemy," he said.

Their success was based on the simple fact that between unexpected assault and defensive response there must always be a recognition lag.

The shock of what he'd seen made his responses vague and defensive.

No one wants to seem like a rube - a defensive response, which in the end is self-anesthetizing.