Well sure, any teenage girl who babysits could've told ya THAT....

From the Onion:

New Study Reveals Most Children Unrepentant Sociopaths
MINNEAPOLIS—A study published Monday in The Journal Of Child Psychology And Psychiatry has concluded that an estimated 98 percent of children under the age of 10 are remorseless sociopaths with little regard for anything other than their own egocentric interests and pleasures.
According to Dr. Leonard Mateo, a developmental psychologist at the University of Minnesota and lead author of the study, most adults are completely unaware that they could be living among callous monsters who would remorselessly exploit them to obtain something as insignificant as an ice cream cone or a new toy.

"The most disturbing facet of this ubiquitous childhood disorder is an utter lack of empathy," Mateo said. "These people—if you can even call them that—deliberately violate every social norm without ever pausing to consider how their selfish behavior might affect others. It's as if they have no concept of anyone but themselves."

"The depths of depravity that these tiny psychopaths are capable of reaching are really quite chilling," Mateo added.

According to the Hare Psychopathy Checklist, a clinical diagnostic tool, sociopaths often display superficial charm, pathological lying, manipulative behaviors, and a grandiose sense of self-importance. After observing 700 children engaged in everyday activities, Mateo and his colleagues found that 684 exhibited these behaviors at a severe or profound level.

The children studied also displayed many secondary hallmarks of antisocial personality disorder, most notably poor impulse control, an inability to plan ahead, and a proclivity for violence—often in the form of extended tantrums—when their needs were not immediately met....

Mateo added that even when subjects were directly confronted with the consequences of their inexplicable behavior, they had little or no capacity for expressing guilt, other than insincere utterances of "sorry" that were usually coerced.

Because children are so skilled at mimicking normal human emotions and will say anything without consideration for accuracy or truth, Mateo said that people often don't realize that they've been exploited until it is too late. ...

According to renowned child psychologist Dr. Pritha Singh, author of Born Without Souls, diagnosing preadolecents as sociopaths is primarily a theoretical interest, as the disorder is considered untreatable.

"We've tried behavior modification therapies, but children actually learn from our techniques and become even more adept at manipulating others while concealing their shameless misanthropy," Singh said. "Sadly, experience has taught us there is little hope for rehabilitation."

The last sentence is priceless:

"Just look at the way most adults act," Singh added.