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“Being in a good mood may lead to poor memory” Most people have had trouble
remembering something they just heard. Now, a University of Missouri researcher
found that forgetfulness may have something to do with being in a good mood.
Elizabeth Martin, a doctoral student of psychology in the College of Arts and
Science, has found that being in a good mood decreases your working memory
capacity.

"Working memory, for
example, is the ability to recall items in a conversation as you are having it,"
Martin said. "This explains why you might not be able to remember a phone
number you get at a party when you are having a good time. This research is the
first to show that positive mood can negatively impact working memory storage
capacity. This shows that although systems in the brain are connected, it is
possible to affect one process but not others."

Researchers gauged study
participants' mood before and after showing them a video clip. Some
participants were shown a segment of a stand-up comedy routine, while others
watched an instructional video on how to install flooring. Following the
videos, those that viewed the comedy routine were in significantly better moods
after viewing the video, while the mood of those that viewed the flooring video
had not changed.

After watching the videos,
both groups completed a memory test. This test provides several numbers to a
participant through headphones at a rate of four numbers per second. After the
recording stopped, participants were asked to recall the last six numbers in
order. Those that watched the comedy routine and were in a better mood
performed significantly worse on the task.

"While working memory
storage is decreased, being in a good mood is not all bad," Martin said.
"Being in a good mood has been shown to increase creative problem-solving
skills and other aspects of thinking." Martin said future research should
analyze the impact of mood on working memory storage capacity in real life
situations, such as a classroom setting.