Which psychological disorder is characterized by major disturbances in thought

   Schizophrenia

Explanation:  It is a disorder characterised by disturbance in thinking and behaviour in general that is impulsive-compulsive, as well as disorders in the emotional experience of the world around them and overall perception. Schizophrenia is one of the major psychological disorders where the ability to function normally is totally impaired. Schizophrenics can experience various types of hallucinations and delusions, and can hardly manage their behaviour and emotions, and they need to be treated.

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answer; /// the above statement is (true);