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Old 10-29-2010, 12:44 PM   #27
vicky_molokh
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Default Re: (Unofficial) FAQ of the GURPS Fora

Q: What are the differences and nuances of Empathy, Body Language, Psychology and Detect Lies?

A: Kromm has it sorted out!
Quote:
Originally Posted by Kromm View Post
There's a whole mess of traits here, but no two are exactly alike. The important bits:
Empathy
What It Is: The near-psychic ability to spot impersonators, pod people, possessed individuals, and traitors instantly with an IQ roll. Fringe benefits include detecting that someone is lying in general by making an IQ roll, and +3 to Detect Lies, Fortune-Telling, and Psychology.

When It Works: When you meet the subject in person. You don't necessarily have to see him, but you must come within touching distance of him.

Limitations: Doesn't work on IQ 0-5 entities or on spirits. Doesn't work outside of personal meetings. Its lie-detection ability is vague, and only reveals whether any lying is going on, not the specific bits that are lies, much less the truth.

Illustrations: If anybody in The Matrix had Empathy, they'd have strung up Cypher as soon as he cut his deal. If any of Mystique's enemies had Empathy, her power would be kind of useless.
Detect Lies (untrained use at Per-6 • defaults to Body Language and Psychology at -4 • gives Body Language at -4 • Empathy gives +3)
What It Is: The studied, fairly realistic ability to tell when somebody is lying, primarily from voice stress and word choice. It resists each attempt to lie to you; your subject rolls IQ, Acting, or Fast-Talk. Victory reveals whether a particular statement was a lie – a trick that's beyond simple Empathy (although someone with Empathy could add +3 to the default of Per-6 to try this at Per-3).

When It Works: Whenever you can hear your subject speaking. You do not have to see or even be very near him! This works on dictators giving shouted speeches at rallies or on the radio, and even over the telephone.

Limitations: Does nothing until the subject speaks. Doesn't detect emotions, hidden features, motives, or truths – only lies. Can be defeated by someone with high Acting or Fast-Talk.

Illustrations: This is the classic detective ability in police drama, where the cops behind the one-way glass listen to the interview with the suspect, and one of them suddenly says, "He's lying!"
Body Language (no untrained use • defaults to Detect Lies and Psychology at -4 • gives Detect Lies at -4)
What It Is: The studied, fairly realistic ability to read physical "tells." Can spot impersonators and strong emotions (but nothing as weird as possession or pod people) like Empathy, and lying like Detect Lies, by observing someone. A fringe benefit is being able to spot physical tension: "He's going for a weapon!", "He flinched when you said 'England.' He may be a British agent.", etc.

When It Works: Whenever you can see your subject. You do not have to hear or even be very near him! This works on dictators gesticulating at rallies or on TV, and even via camera or other remote optics.

Limitations: Does nothing if you can't see your subject; hearing or even touching him isn't enough. Doesn't detect motives or hidden features – just lies and impersonation. Empathy gives no bonus.

Illustrations: This is a traditional bodyguard skill, used to spot fake guards and people going for guns. This is also the classic kung fu sifu ability in martial-arts flicks, where the ancient master can tell when his student is angry, not training properly, etc. merely by looking at how he moves.
Psychology (untrained use at IQ-6 • defaults to Sociology at -4 • gives Body Language and Detect Lies at -4 • Empathy gives +3)
What It Is: The studied, fairly realistic ability to predict the general behavior of an individual in a particular situation. This can be reversed to determine whether a particular behavior or deed (e.g., a murder) suits a given person. This is the only predictive ability on this list (although someone with Empathy could add +3 to the default of IQ-6 to try this at IQ-3).

When It Works: After a lengthy period of observation or a full-length interview, possibly supplemented by scientific tests, or after reviewing a file that includes roughly the same level of data on the subject or deed of interest.

Limitations: Does nothing in short order – if you can't observe, interview, or review a file, you can't make any guesses at all. Vague, giving broad answers ("He'll resort to violence.") but never specifics ("Only one man would put deadly poison in the city's water supply."). Worthless against lies and impersonations happening right now.

Illustrations: This is the realistic profiler's ability, often used somewhat cinematically in serial-killer movies like Se7en and Silence of the Lambs.
Somebody with neither Empathy nor points in these skills has no chance of spotting motivations or impersonation on merely meeting or seeing someone, as described for Empathy and Body Language; can tell when he's being lied to in speaking with default Detect Lies at Per-6; and can predict others' behaviors from their profiles with default Psychology at IQ-6.
Highlights: Empathy allows using an IQ roll to get a general feel about a person, and to broadly detect lies. Or it can add +3 to Detect Lies instead of getting an IQ roll. Do note that while your Detect Lies skill will likely be higher than your IQ, it is a resisted skill. So think which is more advantageous - a straight roll, or a higher but resisted one. You must pick one or the other:
Quote:
Originally Posted by SE37
+3 to Body Language
or Detect Lies for having Empathy (or +1 for Sensitive), but not
if Empathy was used actively to detect the same lie; empaths
may make an active roll or claim this passive bonus, not both.
Also, the post is old, and the range limit is not confirmed anywhere in the books that I know of, and is in fact contrary to certain other statements (e.g. Remote allows one to use Empathy through phones without needing to be within any specific range; Emotion Sense acts as Empathy but only acts within 2 yards).

Also note that Detect Lies is at -3 when used on written text instead of spoken/signed.
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Last edited by vicky_molokh; 06-02-2017 at 08:16 AM.
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