There are many potential reasons for the lack of conclusions made about this issue. There were particular limitations to the results. Therefore, in this study, linear regression analysis showed that higher doses of caffeine impaired long-term memory, suggesting a dose-response relationship between caffeine intake and retention time.
We wanted to be able to detect any effects of the two main variables, plus any interaction effects of the variables: Everyone participating is familiarized with what is required of them for the study. Annales Universitatis Mariae Curie-Sklodowska.
Not many studies have performed an extensive study that that test all types of memory, but have rather made small steps on general ideas about caffeine.
Previous research suggested that the tip of the tongue phenomena can be corrected for with the use of caffeine, and that caffeine could help one to more quickly retrieve the word they are looking for.
Findings such as these give light to the idea that caffeine may help individuals perform at their optimal level. Results should be interpreted cautiously because another population of people might produce different results.
Sex differences[ edit ] Many studies provide support for the idea that caffeine has different effect on males versus females when related to memory. Now, researchers at Johns Hopkins University have found another use for the popular stimulant: Duration of caffeine avoidance[ edit ] There is also existing evidence that reflects on the duration of the caffeine avoidance period in relation to the significance of the withdrawal symptoms.
All participants were shown a word list which would eventually be tested. This implies that memory acquisition was not affected, while increases in memory retention were. Memory can be broken up into to two general types: Caffeine consumption for 4 weeks also significantly reduced hippocampal neurogenesis compared to controls during the experiment.
The other 10 words are low frequency words that appear less frequently in English materials. They measured declarative verbal memory, procedural motor skills, and perceptual learning. It should be noted that all researchers participating were trained not to show much emotion while administering the caffeine or providing the word list or blank sheet of paper.
The three caffeine groups were given caffeine levels of either 1. There was a significant difference in those taking caffeine, but there was no difference in scores between males and females.
Two groups of 20 would be separated and put into two different rooms in order to eliminate crowding. It is mostly recognized as a mild central nervous system stimulant, but because its ability to produce cholinergic stimulation, it may lead to higher cognitive functioning.
The results were consistent with previous research in that caffeine helps boost certain types of memory. Journal of clinical psychology. Those participants who ingested the most caffeine also ate more high-sugar snack foods in the laboratory, and reported higher protein and fat consumption outside the lab.
After time is up, researchers replace the word list with a blank sheet of paper and writing utensils.Sex differences have not been thoroughly covered in the literature concerning caffeine’s effect on memory. Since most studies do not report significant sex differences in this area of memory study, it is reasonable to assume that there is not strong evidence to support sex differences in caffeine’s effect on memory.
Until now, caffeine's effects on long-term memory had not been examined in detail. Of the few studies done, the general consensus was that caffeine has little or no effect on long-term memory retention. Effects of Caffeine and Sex Differences on Memory This study was conducted to determine the effect caffeine has on memory recall and verify whether or not there are sex differences.
Though there are different types of memory, this study focuses on free immediate recall.
Caffeine Stimulants Arousal Memory Gender differences THE effects of caffeine on cognitive performance depend upon an individual's typical level of arousal . For exam- ple, Gilliland  administered 0, 2 or 4 milligrams of caffeine per kilogram of body weight to introverts and extraverts and measured their performance on a test consisting of.
However, there were no sex differences in memory recall found. There still is a need for further research on sex differences, caffeine's effects, and the varying types of memory because of potential relationships between these variables.
Interestingly, there were significant gender differences, with boys drinking high-caffeine Sprite showing greater increases in diastolic blood pressure (the lower number) than boys drinking the low-caffeine Sprite, but girls being unaffected.Download