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How practice tests improve memory

Date:
October 15, 2010
Source:
Kent State University
Summary:
Although most people assume that tests are a way to evaluate learning, a wealth of research has shown that testing can actually improve learning.

Although most people assume that tests are a way to evaluate learning, a wealth of research has shown that testing can actually improve learning.
Credit: iStockphoto/Laurence Gough

Although most people assume that tests are a way to evaluate learning, a wealth of research has shown that testing can actually improve learning, according to two researchers from Kent State University. Dr. Katherine Rawson, associate professor in Kent State's Department of Psychology, and former Kent State graduate student Mary Pyc publish their research findings in the Oct. 15, 2010, issue of the journal Science.

"Taking practice tests -- particularly ones that involve attempting to recall something from memory -- can drastically increase the likelihood that you'll be able to remember that information again later," Rawson said. "Given that hundreds of experiments have been conducted to establish the effects of testing on learning, it's surprising that we know very little about why testing improves memory."

In the article titled "Why Testing Improves Memory: Mediator Effectiveness Hypothesis," Rawson and Pyc reported an experiment indicating that at least one reason why testing is good for memory is that testing supports the use of more effective encoding strategies.

Rawson offered this illustration. "Suppose you were trying to learn foreign language vocabulary," she said. "In our research, we typically use Swahili-English word pairs, such as 'wingu -- cloud.' To learn this item, you could just repeat it over and over to yourself each time you studied it, but it turns out that's not a particularly effective strategy for committing something to memory.

"A more effective strategy is to develop a keyword that connects the foreign language word with the English word. 'Wingu' sounds like 'wing,' birds have wings and fly in the 'clouds.' Of course, this works only as well as the keyword you come up with. For a keyword to be any good, you have to be able to remember your keyword when you're given the foreign word later. Also, for a keyword to be good, you have to be able to remember the English word once you remember the keyword."

The research done by Rawson and Pyc showed that practice tests lead learners to develop better keywords. People come up with more effective mental hints or keywords, called mediators, when they are being tested than when they are studying only.

Rawson joined Kent State's faculty in the fall of 2004. Her grant-funded research, undertaken with colleague Dr. John Dunlosky, psychology professor and director of Experimental Training at Kent State, seeks to identify effective study strategies and study schedules for students to learn classroom material in a durable and efficient manner.

Earlier this year, Rawson traveled to the White House and received the Presidential Early Career Award for Scientists and Engineers, the highest honor bestowed by the U.S. government on young professionals in the early stages of their independent research careers. Nominated by the U.S. Department of Education, Rawson was one of 100 beginning researchers named by President Barack Obama to receive this award. She resides in Stow, Ohio.

Pyc received her master's and doctoral degrees from Kent State. She worked in Rawson's cognitive psychology lab. Pyc's research interests involve promoting student learning, including when retrieval practice is beneficial for memory, evaluating theoretical accounts for why retrieval practice is beneficial for memory, how students self-regulate learning, and how students' metacognition is related to their self-regulated learning. She is now a postdoctoral fellow at Washington University.


Story Source:

The above story is based on materials provided by Kent State University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Mary A. Pyc and Katherine A. Rawson. Why Testing Improves Memory: Mediator Effectiveness Hypothesis. Science, 15 October 2010: 335 DOI: 10.1126/science.1191465

Cite This Page:

Kent State University. "How practice tests improve memory." ScienceDaily. ScienceDaily, 15 October 2010. <www.sciencedaily.com/releases/2010/10/101014144235.htm>.
Kent State University. (2010, October 15). How practice tests improve memory. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2010/10/101014144235.htm
Kent State University. "How practice tests improve memory." ScienceDaily. www.sciencedaily.com/releases/2010/10/101014144235.htm (accessed April 23, 2014).

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