Improving Long-Term Memory

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For my business statistics course there are fundamental equations for each of the different types of distributions that are used to calculate various fundamental aspects of said distributions. Some of the equations are similar in that they utilize the same variables but treat the variables in different ways, while other equations may have completely unique parts that are unused in any others.
I will be tested over this information via multiple-choice exams. However, I would argue that while there are some elements of recognition-based testing, one must be able to recall how to manipulate the given data to arrive at one of the four or five answers provided. As is generally suggested, I will be studying to recall not just to recognize.
Between the introduction of a new idea and when I’ll be tested over it is generally several weeks. While the tests in this course are not cumulative by definition, the material does build upon itself throughout. This means that while I will not be explicitly tested over the same material twice, I will need to be able to utilize previously tested material in future tests if needed. I would also like to retain this knowledge for use outside of the course.
Information that resides in long-term memory has gone through quite the process in reaching the status of a durable memory. First, new information is imported into the brain through our sensory organs into our sensory memory. The sheer amount of sensory information that is generated is larger than what we as humans can give attention to. As a result, most of the information present in this first step will not be retained. Once in sensory memory, the attended stimuli will be shipped to the short-term memory. From short-term memory one of two things ...

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...terference by recalling all or part of a similar equation that was learned in a previous math class instead of the desired one. Conversely I would be suffering from retroactive interference in the following scenario. As stated earlier, the material builds upon itself. If we learn a new or more articulate method to find something, this new method may result in not using the original one again, save for in a test. If I was then tested on the original material I may have a hard time recalling it.
Of the two types of interference, I feel proactive interference would be the most detrimental. Events and memories that are most likely to decay lie in the present, as time elapsed since occurrence increases so does the solidity of the memory, thus resulting in newer memories comparatively to older memories being much easier to override, and much more difficult to correct.

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