DSM-5: Challenging diagnostic testimony

Area of Science:

• Psychiatry
• Psychology
• Forensic Psychology

Background:

• The Diagnostic and Statistical Manual of Mental Disorders (DSM) has undergone a complex 60-year evolution.
• Its construction, purpose, framework, and disorder inclusion have not followed a linear or cumulative path.
• The DSM is a critical tool in mental health diagnosis and treatment.

Purpose of the Study:

• To evaluate the stated purpose of the DSM-5 in the context of psychological expert testimony.
• To analyze the complications and criticisms of using DSM-5 for forensic purposes.
• To identify challenges experts may face when providing diagnostic opinions based on DSM-5, especially for neurocognitive disorders.

Main Methods:

• Literature review and critical analysis of the DSM-5.
• Examination of legal rules of evidence relevant to expert testimony.
• Focus on the application of DSM-5 in forensic psychological evaluations.

Main Results:

• The DSM-5's utility in forensic settings is questioned due to its evolution and inherent limitations.
• Explicit cautions within the DSM-5 and evidentiary rules complicate its use in legal testimony.
• Specific challenges arise when diagnosing neurocognitive disorders using the DSM-5 in forensic contexts.

Conclusions:

• The DSM-5 presents significant challenges for its application in psychological expert testimony.
• Forensic experts must anticipate and address these challenges when formulating diagnostic opinions.
• Careful consideration of the DSM-5's limitations is crucial for credible forensic evaluations.