There are nature and nurture components to virtually every behavior a human experiences. The research effort lies only in finding the relevant percentages, not on some absolute value. That's one of the reasons behavioral scientists have to be really good statisticians.
John MedinaA third or more of the brain is devoted to visual processing, not true of any other sense. We have color vision and it is truly binocular. This sophistication is not true of other senses, such as smell, where many genes are actually mutated and no longer work.
John MedinaHuman learning is a very aggressive style in its native state. I am not sure why, though it is a very useful trait in an unstable, unpredictable living environment.
John MedinaThe brain cannot multitask. Multitasking, when it comes to paying attention, is a myth. The brain naturally focuses on concepts sequentially, one at a timeโฆTo put it bluntly, research shows that we canโt multitask. We are biologically incapable of processing information-rich inputs simultaneouslyโฆStudies show that a person who is interrupted takes 50 percent longer to accomplish a task. Not only that, he or she makes up to 50 percent more errors.
John Medina