or... the people with sleep deprivation.. simply don't have enough energy left to focus on the test... was all the variable controlled? how did you record the data? Quantitative observeration? Qualitative observation? ... too many confounding variables usually screw over your psychological experiments.. I would know.. I can't even do the stroop effect experiment without realizing there are atleast one or two variables that simple cannot be controlled..
By the way people that study all night long.. and plans to do major cramming only means that they are born procrastinators.. whereas the people that studied earlier knows how to plan ahead and are most likely the better students.. (remember I am only generalizing) Study materials could also be different per student as well Loka..
Also Anex.. have you seen MRI scans or any brain scans in particular? I noticed that we use a lot more then 10%... but certain brain damages could really mess up your ability to use the full potential of your brain...
Also Anex read up on split personalities, it has some very interesting case studies.. I don't remember the specific case study... but the gist of the case study was this... (for the sake of easier explanation we'll call one of the personality Eva Black and the other personality Eva White)
oh wait.. eva..
eve?
oh shit.. my memory somehow triggered and I magically found the case study O.O
http://www.holah.karoo.net/thigpenstudy.htm
and I'm not really back yet.. happen to stumble on to your post since today is the start of a four day weekend.. and replied to your post because I find it very interesting and not the same old crap like in the other sections