Writing an abstract for a scientific paper.
The title and the abstract must work together to give the reader clear, concise information about what you did, what you found, and why it is important. The abstract, as well as the paper itself, should be written in the first person. The "royal 'we'" should only be used, if, in fact, there are multiple authors; otherwise, say "I".
Generally, abstracts (and papers, too) are written in the past tense, since the work has already been completed when the paper is written.
Title: The effects of Vitamin E supplements on manual dexterity in humans. (If you had found that Vitamin E enhances manual dexterity in both tests, you would say so in the title: Vitamin E supplements enhance manual dexterity in humans)
The first sentence of the abstract should introduce the reader to the work: I studied whether doses of Vitamin E taken to reduce the risk of cancer also reduced scores on manual dexterity tests.
The next 2-3 sentences should describe the methods and materials VERY BRIEFLY: I administered the Jones Test of Manual Dexterity and the QT Typing Test to 50 human volunteers taking 100mg of Vitamin E per day. I also tested 50 matched volunteer control subjects.
The next several sentences should summarize your results, one sentence to a result, if possible. The subjects taking vitamin E scored significantly better on the Jones test than did the control subjects. There was no difference between the two groups on the QT test.
The final 2-3 sentences should relate your findings to other work, and summarize the importance of your work. Previous studies of the effects of Vitamin E have only been done using mental ability tests. These studies concur that Vitamin E reduces subjects' mental abilities. My work shows that Vitamin E enhances subjects' manual dexterity. Vitamin E thus appears to have different effects on motor and brain neurons.
Although many writers speculate on the kinds of future experiments that need to be done in the discussion section of the full paper, such speculation should not be part of an abstract. Do not end with "The effects of vitamin E on different kinds of neurons needs to be fully investigated."
General guidelines: