Sigrun, another question/thought about your process: Is it possible you narrow in on 2 suspects with 2 specific personality traits, but are wrong about the suspects and correct about the traits?
Definitely. And I have to be careful about which traits I glean from the crime scene and from identified suspects comes from.
So, crime scene:
S1 -> AII HPD severity mild to moderate
S2 -> AII NPD severity mild to moderate
Not much else. Latest development based on identified suspects:
S1 -> AII HPD w features AII RA, AII NP mild
S2 -> AII NPD w features AII ASP mild
This assumes the truth or new evidence/facts come out of course, but hypothetically, could you identify specific personalities of S1 and S2, name DR and LH as S1/2, but then find out that the culprits are DH and TH?
Yes, but we'd expect that those same patterns would appear uniform from one to the next. We might add info, but it shouldn't change the primary feature. If that doesn't happen it's a red flag.
Or must your personalities end up matching/identifying S1/2? A broad problem I have at this point is that your personality descriptions of S1/S2 sound like they could also very easily match DH and TH and I am wondering at what point do you exclude DH and TH or do you still include them? I guess another general way to ask this is: at what point or how do you balance psychology with limited or questionable evidence?
The first controlling factor is the rarity of the condition. Less than 1% of the general population exhibits mild to severe Axis II disorders. So, when you're looking at a laundry list of suspects, often they are not representative of the population. So, if we identify from actual evidence that we have two sets of candidates whose primary features match, we need something else to distinguish them. Right now, the evidence alone (no psychology) points to the most probable conclusion that S1 and S2 are as I've tentatively identified them, imo. And if that were not the case I wouldn't have left the crime scene yet.
But say you don't agree. Then keep reading, because we have not abandoned that subject at this stage, we're just moving forward:
Once the full narrative is built, what may seem weaker in the beginning can be stronger. In law they refer to this as "tiles of a mosaic" but it basically means that evidence can corroborate different parts of a narrative. So, I have to go with the best thing I have and run it out to see what the big picture says before I can say, oh wait, maybe it was this other set of suspects and a different narrative. That process doesn't take forever and usually runs much faster than this first phase, but yes you must reconcile the entire narrative, not just the part we've examined so far.
~ svh