Drug Effects On Memory
In a recent psychology research project conducted at the University of Iowa, scientists experimented on marijuana and its effect on the brain’s ability to memorize and retrieve. With the use of 31 participants, 18 of the subjects smoked marijuana at least seven times a week; most of them smoked marijuana more than seven times a week. The scientists wanted to test the experimental subjects on their ability to remember a group of words and whether or not they could recall or retrieve the information. The hypothesis tested was that frequent marijuana use has an effect on a person’s blood flow to memory regions of the brain. The participants used in the experiment were 18 frequent marijuana users and 13 nonusers of the illegal drug. None of these participants had other related problems with alcohol, visual impairments, obesity, mental illnesses, and none were currently on a drug that would affect the positron emission tomography (PET) reading of the brain. The participants were asked to not use any type of drug seven hours prior to their hospitalization to begin tests. Each participant was asked to remember a list of 15 common words, such as drum, bell, etc., until that patient was able to repeat the list of words in order twic
This research project deals with the memory portion of class. It deals with a person’s ability to use short-term memory, long-term memory, and working memory. A person’s short-term memory allows him/her to hold information for 15 to 25 seconds. Long-term memory allows a person to store information on a more permanent basis. A person’s working memory is an active area where information is retrieved and manipulated, and where information is held through rehearsal. The marijuana users also showed signs of recency effect, where they memorized more of the words that were read to them more recently, or the words at the end of the list; users didn’t show much of a primary effect, where they would remember more words from the beginning of the list. I agree with the findings because I believe that most people that smoke marijuana frequently would behave in the same manner as the marijuana users in this experiment. I think that the marijuana would give most people a problem memorizing things when the drug is used often. It would affect their ability to interpret ideas and concepts. Without mentioning any names, I do know people that use the drug quite often, and it shows in their grades. They have a harder time remembering what they learn in class, which affects them greatly on exams and quizzes. The results of the experiment showed a slight difference between the users of marijuana and the nonusers. The hypothesis was not quite supported because there was not a large enough difference between the two experimental groups of people. When asked to memor
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,
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Approximate Word count = 1055
Approximate Pages = 4 (250 words per page double spaced)
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