This is, as has been said, a very interesting argument unlike one I've ever seen on the LSAT. Let's break it down.
Interviewer:Therapist says that, with rigorous adherence to the proper treatment, any case of insomnia is curable
+
Some patients suffering from insomnia do not respond to treatment
→
[The therapist is wrong]
Therapist:Patients
do not respond to treatment
→
They are
not rigorous enough in adhering to treatment
Things to note:(1) We are focused on the therapist's reply. Thus, don't focus too much on finding the flaw in the interviewer's statement if a flaw exists at all.
(2) The "conclusion" of the interviewer is more or less implied. The interviewer is basically saying that the therapist is wrong in his statement that ALL cases of insomnia can be cured with certain treatment.
(3) Notice the gap in the Therapist's argument. The Therapist is saying that IF they don't respond THEN they must not be doing something right. Well what if they are doing everything right? The therapist is merely assuming that he is right; no if's and's or but's. As Mike already said, this is an argument unlike I have ever seen before so I wouldn't (and won't) make this into something that I look for frequently. Are there even any other problems like this, Manhattan Geeks?
(A) describes the flaw very well. The Therapist is merely concluding "I'm right...no matter what!" As Mike says...
Mike Wrote:he's created a situation in which it is impossible to refute him -- if anyone says it doesn't work - he can just say they are not wishing hard enough.
(B) is, in my opinion, the most tempting answer actually. I thought this was tempting because there was a little bit of funny business going on with the word "treatment." The interviewer is talking about "with rigorous adherence to the PROPER treatment..." while the Therapist is talking about "if patients do not respond to TREATMENT," period. Maybe the treatment isn't the right treatment? However, the problem with this thinking is that whether or not the treatment is proper doesn't matter. We are talking about ALL treatment. The Therapist says, "If patients don't respond to treatment..." This includes ALL treatment - both proper and improper. Thus, "treatment" is not really ambiguous here but I would still like some clarification on my thought process, if possible.
(C) is wrong because we don't know how the causes affect anything. Maybe the same treatment treats all causes of insomnia. It's possible as the stimulus never refuted it! Whenever it says "fails to acknowledge," we can simply acknowledge it and see how it changes the argument. If it doesn't really change the argument then it isn't a flaw.
(D) No statistics are needed. In fact, how would he even provide stats for not "adhering rigorously enough to the treatment?"
(E) The problem with this answer is that we are concerned with the people who DON'T improve, not those that DO.