PubMed’s default Format setting is to display results in Summary view, which you can see reflected in the result below.
If you’d prefer to read the abstract without having to advance to the next screen, you can change the Format setting to Abstract, shown in the image below. Note the different appearance of the title, the ability to view more author information by toggling the + button, the addition of article keywords, and the presence of full-text link buttons below the abstract. To view similar articles, MeSH terms, and other supplemental data for the article, click Proceed to details.
When presented with a choice of full-text link buttons, always try either 
or 
before a publisher link, such as the Sage Journals link in the image above. PMC (PubMed Central) downloads are always free, and UMSL Libraries will provide access to free articles whenever possible. However, publisher sites often charge for downloads.
Please don’t ever pay for an article! If you need it and have a few days to wait, you can request the article through Interlibrary Loan at no cost to you. Please speak with a Reference Librarian if you need help with this.
TIP If an article looks promising, pay attention to the authors and keywords. An author will often write multiple articles exploring a single subject, and you can find those articles by clicking on his/her name. Keywords can offer other terms to search or suggest areas of focus for your paper if you haven’t yet settled on a topic.
By default, PubMed sorts results by relevance, with the topmost articles considered the Best Match for your search. You can easily sort the results by date the article was initially added to PubMed (as opposed to the publication date) by choosing Most Recent.
You can also sort results by publication date or alphabetically by first author, last author, journal title, or article title.
NOTE When you switch from Best Match to Most Recent, the number of results will sometimes change because the database is relying on straightforward criteria such as date added rather than using an algorithm to find the most relevant results.
You can also adjust the number of results that appear on each page. The default is 10, but you can change to as many as 200.