An effective abstract has the following qualities:
It contains one or more clearly worded, concise, and lucid paragraphs.
Follows the same order as the paper, i.e. contains an introduction, body and conclusion structure.
Follows strictly the chronology of the article, paper, or report.
The information provided is well connected
Does not add extra information which is not present in the article
Can be easily grasped by a wide audience.