I've reviewed JY's lessons for Sufficient, Pseudo Sufficient, and Necessary Assumptions twice, but I'm still struggling a lot with these question types. I frequently get them wrong, particularly Sufficient Assumption, and it's really frustrating. Any advice on how to overcome this stumbling block? I feel like as soon as I improve on these question types, my overall LR score will improve immensely, so any help/suggestions would be immensely appreciated.
Comments
When I read the question stem and I know it's a SA question, I anticipate either term or scope shifts. Recognizing what I have to do upfront allows me to better parse through the fluff in the stimulus. I don't know if this is recommended but I always do two read-throughs and my first read-through is dedicated to ignoring everything until I ID the conclusion and I immediately write it down. The next thing I do is try to find the main premise (typically there will be 1/2) that is used to substantiate the conclusion. After that, I remember that I'm looking for term or scope shifts -- what word is used in the conclusion that isn't mentioned in the premise? Or, one that I used to fall for, can we really make predictions about the present (conclusion) based on what happened in the past (1975)? Very often SA will have term shifts that will let you hone in on the missing premise.
If it helps you, you can diagram them out as well. I personally hate diagramming because I get caught up in the conditional logic, which takes time away from really engaging with the argument but to each his own.
TL;DR: finding the conclusion and main premise is most important step. If you can be absolutely confident and definitely say "this is what the argument is trying to say," the wrong answer choices will seem painfully obvious because they will seem grossly out of scope and unrelated to the main assumption.
Do you have any recommendations on how to approach RA questions?
http://7sage.com/discussion/#/discussion/comment/5005
Note, in the case of Assumptions, sometimes (even often) the assumption is not what you had anticipated as there are infinite assumptions associated with any argument, and the likelihood of you guessing the right one is nowhere near certain. If you cannot find what you had anticipated, just apply the method backward; look at each AC and see if that bridges (term or scope) the Ps and Cs together.
**NAs are required for validity, but do not necessarily entail validity
**SAs are sufficient for validity, but are not necessarily required for it
**PSAs are just SAs worded differently.
**Strengthening Qs are just a weaker form of SAs
**Weakening Qs are just the opposite of Strengthening