I've learned from psychology is about the split-brain and normal brain: the split-brain can make it tempting to extend the conclusions to normal individuals. and the another one is about normal brain. normal brain can make findings in normal individuals does indicate to specialized in ways similar to what has been observed in split-brain individuals.for example, critical cases show that the normal brain can make a disease or trauma, can impair speechless.
and I also learned about psychologist.psychologist have identified several factor that seem to influence how stressful a situation seem; one factor identified as influencing the impact of stressors is predictability(glass and singer 1972).for example: people who live near subways or railroad tracks often show no discomfort the sound and unpredictable noise. a second factor is perceived control. for example a field experiment done in nursing home showed that is having control of the situation.
