An article in Health Day on June 14, 2011 carried the headline, Too Little Sleep in Preschool Years May Predict ADHD: Study suggests link between behavior in kindergarten and sleep loss earlier in life.
Their conclusion: "These findings suggest that some children who are not getting adequate sleep may be at risk for developing behavioral problems manifested by hyperactivity, impulsivity, and problems sitting still and paying attention."
So does sleep deprivation lead to a mental disorder? That seems to be the implication. But that couldn't be it, could it? Surely these scientists could not possibly believe that correlation is evidence of causation in this particular instance?
Adults act out too. The latest fad no-such-diagnosis making the rounds of confused lay people to describe them (or themselves) is "Schizophrenic Bipolar."