I am looking for information about difficulty in registering information into memory. This information could be contained in any form, for example you may suggest an article, a study, a book, etc.
Most of the information I have found as a result of googling is related to Alzheimer. This is not exactly what I am looking for. Although Alzheimer is related to memory problems, my specific area would likely be students.
You may also give examples from your personal life. For example, I started taking Vitamin-B, then my memory improved. I do not recommend you to do the same without consulting a medical doctor. However, I still do have problem with registering information into my memory. If the information is not structured and logical enough, it does not stay in my memory long enough. Also, the degree of familiarity with the notations and the syntax which structure the information that I read is important.
Think of what I’m trying to remember. After a minute, think of it again. After several minutes, think of it again. Double or more the span and keep going. Eventually you get to once a day and then eventually once a week.
It’s up to the individual how rapidly to ramp things up for how long. For me, it’s about 4 times and I’m up to a day. Maybe one or so recall step after that.
Note: Cramming and other such stupid student tricks are the exact opposite of what you need to do. (Speaking for a lot of experience as an ex-prof.)
I also find noting initial letters of words and phrases helpful for my filing system. Not as mnemonics.
I have been told that there is evidence that chronic use of benedryl (for instance as a sleep aid) will interfere in the creation of memories. I don’t know any more than that.
There are many techniques that can help memory. One that I have used successfully is the Memory Palace.
In my own life I have found memory problems to be directly linked to lack of attention. You did not do well on the test because you did not pay attention in class. You don’t remember where your keys are because you were not paying attention when you put them down (these are trivial examples and I don’t mean to insult you). To a large extent Paying Attention and Listening are learned behaviors and need to be practiced to get good at them. As an (admittedly trivial) example, I used to constantly misplace my glasses. For a while I employed the technique of imagining that I blew up whatever I put them down on. If I put them on the night table, I would stand back and watch the night table explode as gloriously as possible. This forced me to pay attention. After a while I just started paying attention (not that I don’t occasionally misplace my glasses, but it is much less often).