It is suspected that most of those diagnosed with paranoid schizophrenia are in fact mental invasion victims. If you go through the statements made by paranoid schizophrenics on forum sites you will find that most are describing symptoms that would be too difficult for an untrained piece of brain tissue to perform without a visible training period. The voices arrive too well trained, as is described on the security page on this site. Some likely are schizophrenic, others may be faking. Here are some videos of kids diagnosed with schizophrenia.