When you use the attack action, you can make one attack at your highest base attack bonus that deals additional damage. Roll the weapon’s damage dice for the attack twice and add the results together before adding bonuses from Strength, weapon abilities (such as flaming), precision-based damage, and other damage bonuses. These extra weapon damage dice are not multiplied on a critical hit, but are added to the total.
The Psychic Warrior Mind Knight Path maneuver:
Beginning at 3rd level, you can expend your psionic focus as a standard action to make a melee attack against two creatures adjacent to you. For every five psychic warrior levels you gain thereafter, you can make one additional attack against another enemy adjacent to you.
Both of them are standard actions.