<prompt> Delusion is a disorder of -ThoughtPerceptionAffectEmotions  <response>: Ans. is a i.e., Thought Thought disordersFormal thought disorders Disorders of thought processDisorders of thought contenti . Racing thoughts :- Anxiety, Schizophreniaii Retarded thoughts :- Depressioniii Circumstantiality :- Mania, Schizophreniaiv Thought blocking :- Schizophrenia, Severe anxietyv Perseveration :- Organic brain disease, Schizophrenia occasionallyvi Loosening of association : - Schizophreniavii Flight of ideas :- Maniaviii Tangentialityix Clunging punning :- Mania schizophreniax Neologism, word salad, Echolalia :- Schizophreniai Delusion :- Psychosis Schizophrenia, mania, depression othersii Obsessioniii Compulsioniv Preoccupationsv Phobiasvi Depersonalization Derealizationo In schizophrenia and mood disorders depression, mania all parts of the thought thought process as well as content are involved.o However, schizophrenia is conventionally referred as formal thought disorder. 