Attempts to psychologically manipulate other humans have been around since consciousness. It's probably why we developed consciousness in the first place - to lie, & protect ourselves from lying.
There's an historical myth, based in truth, that during the Battle of Thermopylae (around 400 BC), the Persian king, Xerxes, warned the Greeks that their arrows would be so numerous they would blot out the sun.
We have no proof that the Greeks responded with the same swaggering valor as depicted in the movie 300 (2006), but the story gets cited the same. But even the fictional retort in the movie represents the ancientness of psychological warfare.