Effects Of Caffeine On The Working Memory Tasks Essay

726 Words Jul 19th, 2016 3 Pages
Do you start your day with a fresh, steaming cup of coffee? Do you drink coffee to satisfy your addictive craze? Do you need caffeine to keep you awake? Caffeine is the most widely used drug in the world, consumed by some 80 percent of American adults every day. Caffeine generally improves alertness and reaction time, but evidence is inconclusive for its effect on higher memory and reasoning processes.
Smith (2012) compared those who received caffeinated coffee had significantly faster simple reaction times than those who received de-caffeinated coffee. In the categoric search task, the effect of caffeine on the difference score measuring reaction time to alternations as opposed to repetitions was significant. Those who received a de- caffeinated drink had a greater difference score than those who had received a caffeinated drink, confirming that they were slower at responding to alternations. These findings indicate that caffeine increases speed of encoding and response to a novel (i.e. alternated) stimulus. There were no significant main effects of caffeine in the working memory tasks. Kelemen and Creeley (2001) found that items that were generated by participants during study tended to be recalled at a higher rate than items that were read. Recall also tended to be higher when caffeine was ingested on both days compared to the other three conditions in their study.
On the other hand, Herz (1999) the number of words correctly recalled showed no effects or interactions…

Related Documents