Since that time investigators from several studies used this method. The verb following a named citation should be in past tense. Keep the tenses in the same sentence the same. The percentage of correct responses as well as the speed of the response increases with practice. The percentage of correct responses as well as the speed of the responses increase with practice.
Quotations are effective in research papers when used selectively.
A general rule is to avoid quotations unless they are particularly interesting, vivid, unusual, or apt . Keep all quotations as brief as possible. Over quotation can bore your readers and might lead them to conclude that you are neither an original thinker nor a skillful writer. You may paraphrase the original and quote only fragments, which may be easier to integrate into the text. The accuracy of quotations in research writing is extremely important.