[Psi] Powers (basic set)
 

In the Basic Set, Detect lists Injuries and Diseases as possibilities, and in the Psi section, these are listed as part of the Healing power. Nowhere in the basic set does it say what the effect of these powers is, though. Do they replace Diagnosis? Offer a bonus? Would it offer a bonus to Physician or First Aid? Something else? I realize that these questions and more are probably answered in Powers and/or Psionic Powers, but I have neither, nor a gaming budget ATM.

Re: [Psi] Powers (basic set)
 

I'm not sure what the question is. An injury or disease means what it means, being stabbed is an injury and having a cold is a disease (there may be other examples).

Detect (Injury and Disease) lets you detect injuries and diseases, exactly as described for the Detect advantage. I believe you can justify getting a bonus to certain skills via Detect if you roll against IQ+Talent, Diagnosis should get +4 I think since Detect provide miraculous assistance. I'd require certain enhancements for them to be useful to Physician.

Healing lets you heal people using the rules listed for the Healing advantage.

Re: [Psi] Powers (basic set)
 

The question was whether Detect (Disease and/or poison) would replace Diagnosis for the purposes of determining what was wrong with someone, since Diagnosis is the skill of identifying a disease, which Detect would seem to override. Similarly, Detect (Injury) should, in principle, allow the location of internal injuries, which would ordinarily be a Diagnosis roll at a serious penalty. So I was inquiring what, per the rules, the interaction between Detect (Medical problems) or some subset would be with skills such as Diagnosis. I can certainly see the +4 to Diagnosis being fair, although I would suppose that this would entirely replace equipment modifiers, positive or negative, rather than being added to them.
Quite. However, there is a power group called Psychic Healing (B256), which includes, as powers eligible for that power modifier, both Healing and Detect (disease, poison, etc). All of the other powers have specified game mechanics, but it is not clear to me what the precise RAW benefit of this form of Detect, specifically, especially as it related to mundane medical skills.


Relating to the Healing power, what might people consider a fair discount for the limitation "cannot heal more than 3 HP per use," with the ordinary rules for repeated attempts on the same person? I figure probably somewhere between -5-10% is probably about right. Also, I'm pretty sure there's a rule somewhere about using a skill roll instead of/in addition to an attribute+talent roll. Am I correct in my understanding that using a Hard skill in place of an attribute roll is a 0% modifier? What, if anything, would a modifier that required a skill roll first be worth? e.g., if a character can only attempt to use the Healing power after making a separate Diagnosis roll, is that a limitation, or just a feature?

Re: [Psi] Powers (basic set)
 

I'd suggest using Diagnosis as the controlling skill for a Detect Disease in the first place, same as using Interrogation for Mind Probe.

Re: [Psi] Powers (basic set)
 

Aura Reading, GURPS Psionic Powers, pg 46 ... would answer some of that.

In practice?

Detect feeds you three levels of information.

Detect.Sense
Detect.BasicAnalysis
Detect.DetailedAnalysis

Detect.Sense tells you if it is there and how much of it is there.

Detect.BasicAnalysis tells you the details obtainable via observation. Applied to Detect (Humans), per Aura Reading, above, this acts as a successful Diagnosis check in addition to informing you how many HP and FP they have remaining, if they have any diseases or other infections and their vague emotional state.

Detect.DetailedAnalysis requires the Analyzing enhancement from Powers and gives you the details obtainable via intensive testing and lab work. Applied to Detect (Humans), this tells you the specific disease names, information on subtle, long-term problems and as much detail as the Emotion Sense ability would give. (Empathy, essentially) This counts as a full battery of lab tests, including medical imaging, for all purposes.

All of these information levels allow you to continue monitoring the subject without any additional concentration required.

As such?

Detect (Disease) gives you Detect.Sense for the presence or absence of diseases and a rough estimation of how diseased they are while Detect.BasicAnalysis would count as a successful disease-related Diagnosis check.

Re: [Psi] Powers (basic set)
 

AFAICT the Healing advantage as written doesn't require the use of Detect or Diagnosis beforehand, and allows you to heal someone even if you don't know what's wrong with them at all.

Re: [Psi] Powers (basic set)
 

Sure. There's no reason you couldn't just have the Healing ability. That's different from having a bunch of abilities (Detect, Healing, Afflictions) as part of a Healing power.

Re: [Psi] Powers (basic set)
 

I think you'd need Precise to find particular injuries, although some of the examples in Powers make me think that Using Skills With Powers allows a pretty generous interpretation of what you can do.

No, it adds to them but Detect won't provide a flat bonus. You have to roll for it so there's a chance of failure.

It helps you find where disease and injury is, just like Detect (Gold) helps you find gold. With Analyzing you can justify a bonus to Diagnosis with a successful IQ+Talent roll. A person trying to track the progress of a plague would benefit a great deal from having Detect (Disease) if they can personally walk through a city.

In Powers, yes.

I don't recall if that's RAW or just commonly accepted.

Fairly little, I believe. Fickle, from Powers, drops to -5% (ish, I don't have the book in front of me) if you get to roll for with with normal benefits.

Re: [Psi] Powers (basic set)
 

It's the basis of Skills for Everyone.

Re: [Psi] Powers (basic set)
 

Yes. The question was, if someone has the advantage Healing, how much of a limitation, if any, would it be if they needed to succeed at a Diagnosis roll before being able to make a Healing roll.
unfortunately, I haven't got that book.

Right; a successful Detect check gives a flat +4 to a subsequent Diagnosis roll


This appears to conflict with what you said in post 2, and also what Sunrunner's Fire said in post 5


About what I figured.

Re: [Psi] Powers (basic set)
 

Which part and how?

Re: [Psi] Powers (basic set)
 

I bolded the relevant parts. In post # 2, you indicate that a single roll against the unmodified Detect (disease and injury) advantage will give a bonus to Diagnosis. That would be the Detect roll in Basic set. In post 5, Sunrunner's Fire indicates that 2 successful rolls ( One to detect, and one to analyze, per Basic Set) against unmodified Detect (Humans) will completely replace a successful Diagnosis check. In Post 8, you state that you would need Detect (Injury and Disease) with the Analyzing enhancement in order to receive a bonus to Diagnosis.

Re: [Psi] Powers (basic set)
 

I think being able to get a bonus from Detect for ought to require Analyzing or Precise is most cases but that's an opinion not RAW.

Re: [Psi] Powers (basic set)
 

Per Abilities Enhancing Skills (Powers, pp. 162-162), Detect generally gives +2 for "does what fine-quality mundane equipment would do." I would allow Detect with the Analyzing enhancement to give the +4 for "truly miraculous" aid.

Re: [Psi] Powers (basic set)
 

Powers, p. 51:
So, it limits amount of FP spent (since there's less FP cost enhancement), but it might be the same.
Powers, p. 112 gives Requires (Attribute) Roll -10% for IQ. Transitioning from attribute roll to Hard skill is +0%.

Re: [Psi] Powers (basic set)
 

Good enough for me, thank you.