Which of the following is not a formal thought disorder according to Schneider's list: desultory thinking, driveling, fusion, derailment, substitution, or omission?

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From the Research

Formal Thought Disorders

According to the studies, formal thought disorders are a key feature of schizophrenia, characterized by disruptions in the normal flow of thought. The following are considered formal thought disorders:

  • Derailment
  • Fusion
  • Omission
  • Substitution
  • Driveling
  • Desultory thinking

Schneider's List

Carl Schneider described several formal thought disorders, including:

  • Derailment
  • Fusion
  • Omission
  • Suspension
  • Driveling 1 However, substitution is not mentioned in Schneider's list.

Comparison of Options

Comparing the options provided, the following are considered formal thought disorders:

  • Desultory thinking 2, 1
  • Driveling 2, 1
  • Derailment 2, 1
  • Fusion 1
  • Omission 1
  • Substitution is not mentioned in Schneider's list, but it is mentioned in the study by 2 as a perturbed performance of thinking.

It appears that substitution is not a formal thought disorder according to Schneider's list, but rather a perturbed performance of thinking 2. Therefore, the correct answer is:

  • Substitution

References

1
Research

Formal Thought Disorders-Historical Roots.

Frontiers in psychiatry, 2018

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