Is it appropriate to use "and/or" in a sentence, and how else might I achieve this? [duplicate]

Solution 1:

Shouldn't the title say "...and/or how else might I achieve this?" ;-)

In the sentence as presented, the use of the initial "either" really requires that you follow it up only with an "or"; "either/and" just doesn't work. If the options given are not inherently exclusive, they should be understood to be "one, the other, or both".

Alternatively, you could say "the amount of X increased when Y, and also when Z."

Or, "the amount of X increased when Y, or when Z (increasing linearly/exponentially/whatever when both Y and Z)."

Solution 2:

If it's used repeatedly in your paper and it's important to specify, then I'd probably stick to "and/or" if the intention is clear: it's fairly widely used and, compared to adding a parenthesis such as "(or where both cases hold)", it has the merit of being concise.

I also wouldn't get too bogged down: if the editor really doesn't like it for some reason, they'll change it or ask you to change it. For what it's worth, I translate professionally (both academic material and more general texts) and have never been asked to avoid "and/or".

[Conversely, for my own sanity, I have stopped using "iff" for "if and only if" after this 'misspelling' was highlighted to me various times.]

Solution 3:

I believe a scientific paper is expected to use fairly literate English, so use of short-cuts such as "and/or" might be inappropriate.

However your peer reviewers are likely to be preoccupied with the appropriateness of "bunnies" enjoying sunsets, so it won't detract greatly from the result.

If "it is important [to record] that the events have the same effect when they occur separately or together" - why not just say so?

Solution 4:

As you have used either in the first part of your sentence, the second part of the sentence must only use or, as either-or is a complementary pair, one must follow the other. Either-and would not make the correct grammatical sense.
In the above case, the use use of either-or and and would make two drastically different sentences.