neither nor in stimulus

[NetNet]

If I see "neither nor" in a stimulus, is it the same as "either or", "either or but not both", or "none" in LSAC world?

Also, if you have A or B -- > C, is the contra+ "NOT C --> NOT A AND NOT B" or is it "NOT C --> NOT A OR NOT B"
(I know to switch the +/- sign and negate on N side , but do we do the same on the S side too?)

TIA

[Dave Killoran]

Hi NetNet,

Neither/nor means both are not selected. Neither/nor is a shortening of "not either and not or," and the "not either" was contracted to "neither" and the "not or" became "nor." Thus, a phrase like "Neither A nor B" means "not A AND not B."

From a logical standpoint, neither/nor is the opposite of either/or. As we know, either/or means one or both of the variables, and thus the opposite will not include those possibilities, leaving only "zero" of the variables being selected. So, in your options, it's the first example of the CP you diagrammed. And, all signs switch on each side when you take the CP

Thanks!

[NetNet]

Thanks for the quick reply and helpful explanation, Dave.

I have been VERY impressed with how professional, responsive, and thorough Powerscore is. You really built something remarkable! I am a former Princeton Review teacher, from many moons ago (crazy that you can lose a skill like this), so I know both sides of the coin... I am beyond thankful that I chose Powerscore for LSAT prep.