Sentence:  Freeman , Cameron and McGhie , in their description of the <WSD>disturbances</WSD> of thinking found in chronic schizophrenic patients , say , in regard to condensation , that `` the lack of adequate discrimination between the self and the environment , and the objects contained therein in itself is the prototypical condensation '' . 
Meaning of the word marked with <WSD> tags:  an unhappy and worried mental state