Correct my mistakes...

Es una traducción del español al inglés. Mirad si está bien, por favor.

Es difícil saber qué haría uno en ese momento. Supongo que les pagarían bien por hacer el experimento pero, aun así, creo que hubiera parado el experimento porque no podría provocar dolor a otra persona, aunque me lo ordenase una persona con autoridad.

It’s difficult to know what one would do in this moment. I suppose they would be paid well for doing the experiment but, even this way, I believe that I had stopped the experiment because I couldn’t cause another person pain, although a person with authority was ordering me it.

It’s difficult to know what one would do in this moment. I suppose they would be paid well for doing the experiment but, even so, I believe I would have stopped the experiment because I couldn’t (wouldn't want to) cause another person pain, even if a person with authority was ordering me to do it.[/QUOTE]

Para refinarlo más:
Puedes usar o one o they o I, pero escoge una sola forma.

It's difficult to know what I would do in this situation. I suppose subjects in this experiment would be well paid, but even so, I believe I would have stopped the experiment because I wouldn't want to cause another person pain, even if a person with authority was ordering me to do it.

It's difficult to know what people would do in this situation. Although subjects are probably well paid, they might stop the experiment because they wouldn't want to cause another person pain, even if a person with authority was ordering them to do it.

It's difficult to know what one would do in this situation. I suppose despite being paid well for doing the experiment, a subject might stop the experiment to avoid causing another person pain, even if a person with authority was giving orders to do it.