[RPG] Does the caster of an enchantment spell always know if the spell worked or failed

pathfinder-1espells

Reading the story feat Twisted Love made me think about this, because it say:

You retain your +2 bonus on saving throws against enchantment effects.
If you succeed at a Will save against such an effect, the caster does
not learn that you succeeded at your saving throw (effects such as
detect magic and analyze dweomer still work normally).

For me this implies that a caster of an enchantment spell knows when her spell failed to work on a target, but I do not remember seeing this anywhere else in the rules (and in my games, it was usually used as a house rule for some spells like Zone of Truth). So my question; does the caster of an enchantment spell always know if the spell worked or failed?

Best Answer

Yes and No, the caster knows whether the spell has succeeded, as long as the spell isn't an area of effect spell.

So the caster can *sense* whether the target succeeded a save against a Charm Person spell, but not when using a Zone of Truth spell

PRD: (emphasis mine)

Succeeding on a Saving Throw

A creature that successfully saves against a spell that has no obvious physical effects feels a hostile force or a tingle, but cannot deduce the exact nature of the attack. Likewise, if a creature’s saving throw succeeds against a targeted spell, you sense that the spell has failed. You do not sense when creatures succeed on saves against effect and area spells.