Immunity to mind affecting effects?

[Ishpumalibu]

What does this entail? Spells with the mind affecting descriptor I know. But what about Morale bonuses, being intimidated, diplomacied, bluffed etc?

[Barry Armstrong]

If something doesn't specifically say it's a mind-affecting ability or effect, or have a RAW listing somewhere, then it's up to the DM to decide whether it is or not.

[Tar-Tar]

SRD wrote:

Immunity to all mind-affecting effects (charms, compulsions, morale effects, patterns, and phantasms).

Link

So based on how immunity to mind-affecting effects is described, morale bonuses would be included. Undead like vampires have a Sense Motive skill modifier, so I am fairly certain they are not immune to bluffs. I'm pretty sure the same goes for diplomacy, but I'm not sure. And I don't know for intimidate, I'd have to look around.

[Barry Armstrong]

All those things in parenthesis are either spells or special abilities. I think skills work differently (Bluff, Diplomacy, Intimidate). Those would take affect since they don't specifically "target" the mind. A compulsion, geas, charm, hold, dominate, color spray, confusion, illusion, etc...targets the mind itself, and not engage the PC/NPC directly like a skill would.

Intimidate is a bit different, since it gives the "Shaken" effect (a form of fear, but not specifically listed as a mind-affecting effect, so again, DM's call). Bluffs are basically lies. You can lie to an intelligent undead and they might believe you. Diplomacy may keep an intelligent undead from squashing you long enough to leave. That's why, like Tar-Tar said, they have Sense Motive skills.

[blackbloodtroll]

Now, the Mindless ability will give you immunity to Morale effect and such.