In fact, as soon as the Westerners were evacuated, it seems the United States developed more problems of its own, and the story of one of the deadliest natural disasters in recorded history, which killed around 230,000 people two years ago, started to fade from memory.
However, during adolescence, high school students usually experience dramatic changes in physiology and psychology, and may develop more serious problems than do individuals of other ages if they engage in problem behaviors.
Mark Winstanley, of mental health charity Rethink Mental Illness, said: "Whether or not Trott has a diagnosable mental health problem is beside the point, his mental health was clearly suffering at the time and if he hadn't taken action, he may well have gone on to develop more serious problems.
However, Mattingly was confident Puig wouldn't develop more serious problems if he continued playing.
According to the US Centers for Disease Control and Prevention, long-term studies show that children exposed to SO2 "may develop more breathing problems as they get older, may make more emergency room visits for treatment of wheezing fits, and may get more respiratory illnesses than is typical for children" — though other pollutants can contribute to these conditions.
Approximately 5%to10%0% would develop more persistent problems, for example, depression, post-traumatic stress disorder, or other anxiety disorders unlikely to resolve without intervention.
Consequently, the findings of this study indicate that as long as negativistic and defiant behaviors in childhood are mild to moderate and do not reach clinical levels, boys and girls are equally likely to either outgrow these problems or not develop more serious conduct problems.
And while a minority of people will develop more serious psychological problems, most Americans are simply getting their first lessons in habits of mind long ingrained in Israel, Pakistan, Northern Ireland and other areas where life is uncertain and fear familiar.
This notion is supported by the results with transgenic mice which show that mice containing amyloid beta and tau develop more severe memory problems at an earlier stage than mice with either peptide alone.
Besides, very preterm boys tend to develop more cognitive and motor problems than very preterm girls [ 44, 51].
