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Overview page. Subjects: Psychology.

Loud, raucous laughter, without appropriate cause, most often found in hebephrenic schizophrenia. cachinnate vb. [From Latin cachinnare to laugh loudly + -ation indicating a process or...

See overview in Oxford Index

simple deteriorative disorder

Overview page. Subjects: Psychology.

A condition (included in the ICD-10 classification and in the DSM-IV appendix of conditions meriting further study) characterized by progressive decline in occupational or academic...

See overview in Oxford Index