lolwut, u serious bro?
In case you are:
1. The new MCAT is much longer.
2. There isn't much practice sources available for the new MCAT and no one knows how it will be.
3. How exactly do you prep for the new section?
Hello again Agent B,
1. This is true. I think it's like 7 hours now which is quite a bit of time but remember the curve...personally I wouldn't see a 7 hr exam as that big of a deal, there's a lunch break and more minibreaks!
2. There isn't much practice material now because no one should really be studying yet (besides pre-reqs). There are, however, already sample questions on AAMC now so imagine what AAMC will have out by 2014 when these people need to get studying. They introduced the self assessments in 2012. I anticipate maybe a practice test or two for this new MCAT. It would be hard to imagine them not having one. (I've asked this question via Twitter so I will have to see). From that Kaplan, EK, Princeton, and Berkeley will try to emulate questions and teach students the new strategies.
3. This new social science/psychological/sociological/cultural competence section...
{KEEP IN MIND THE FOLLOWING IS MY OPINION}
It will resemble verbal mostly and have social science concepts mixed in, some to know and some they will introduce that you won't have to know but may know if you took upper level psych.
In First Aid in the Behavioral Science Section they have a whole page dedicated to ethical situations.
Ex.) "A middle-age married woman who had a masectomy says she feels "ugly" when she undresses at night" (Le, Bhushan, Tolles 60).
Then basically you listen to why they feel this way and avoid giving false compliments.
Maybe they'll ask questions like this.
Also, what I hope for is a listening component! Like someone should say something and then we have student interpret whether she's in a hurry and stuff but of course make it little more complicated than that. This would really help with social skills and stuff. Also, the passages should both clinical and non clinical stuff just like the previous MCAT wasn't about medicine at all.
...okay...
[This stuff is not my opinion and via AAMC]
So I actually watched AAMC's video on the new section and did some practice questions. Basically, there are going to be a couple terms sociological/psychological terms we're going to have to be familiar with like self-serving bias, reference group, etc...
Then they're going to present us with passages. Oftentimes these passages will have both graphs/tables (data) + a good amount of text (like the recent AAMC bio section)...basically like bio (but psych/soc/+little bio and verbal combined).
Then they're going to ask us similar questions that we've seen from the old MCAT verbal section/bio section:
Ex. They introduce the term homophilus group (wrong word...already forgot what they said) in the 1st passage (it's basically a group that shares demographical similarities [bmi/income lvl/etc] and research has shown that they are likely to act a same way when put together (which has been established).. Half the ppl in a study are put in this kind of group and half are in a group where things are different. This is what the passage tells you.
Then they ask a question along the lines of:
Which one of the following is like a homophilus group:
a.) reference group
b.) primary group
c.) secondary group
d.) some other choice
The answer's A because reference group is basically the sociological/psychological term for control group and that's what the homophilus group is if you read the passage.
Another question they asked along the lines of:
Which of the following is not an example of "self serving bias" (a concept they explained in the passage)
a.) obese ppl agreeing that there are too many fast food places in the area
b.) non obese ppl agreeing that they work hard
c.) poor/obese people in the inner city agreeing that they'll get shot if they try to go for a jog.
d.) healthy people agreeing there are no fast food places in the area.
Now...I'm not psych/soc major here but it self serving bias kind of speaks for itself and basically in A, B, and C the groups are saying things that will make themselves perceive themselves in a better light. Obese will say that there's this and that factor and fit people will say it's because of their work ethic to make themselves seem hardworking and of good character. So basically, healthy people agreeing that there are no fast food places in the area is the odd one out because it's not making them look any better and may actually imply that their healthy because of factors out of their control which is not making them feel good about themselves so the answer is D.
For this section, it seems like there will be a lot of terms to know. Also, a lot of psych/soc concepts will be introduced in passages (those which you won't be expected to know like the previous MCAT did with sciences sometimes). Then, asking similar questions to the previous MCAT they're going to assess your ability to make connections between things, recognize similarities...etc.
So the overall tl;dr part:
Looks like you're going to have to familiarize yourself with certain psychological/sociological concepts and just get a feel for how research is done and interpreted which should be the same for all other sections. Then, they're pretty much going to ask questions you'd see on the verbal exam or maybe BS part of the exam. Which of the following is not...which of the following terms (that you should know) is like the totally new term we used in a passage..of course these questions are probably way easier than what we'll see in Feb 2015 but I definitely think I could gain a good idea of what will be tested and what I need to do to prepare on my part. I would probably take an intro psych and intro soc. class to learn the basic concepts. I'd also maybe take a more advanced course just to improve my social science reasoning skills and then I'd probably study whatever sample material/practice material AAMC has to offer. Ya, there's no clear path but AAMC is not going to let everyone hang out to dry...and if they do it will show up on the curve.
Good luck 
