Montreal Cognitive Assessment (MoCA): A validation study among prisoners

Area of Science:

• Neuroscience
• Psychology
• Forensic Science

Background:

• Cognitive screening tools lack validation for the prison population.
• Prisoners are a vulnerable group susceptible to cognitive deficits.

Purpose of the Study:

• To validate the Montreal Cognitive Assessment (MoCA) for cognitive screening in prisoners.
• To assess the MoCA's psychometric properties and discriminatory accuracy in an incarcerated population.

Main Methods:

• 100 adult prisoners and 100 non-offenders completed the MoCA and Mini Mental State Examination (MMSE).
• Internal consistency (Cronbach's alpha) and correlations (Pearson's r) were calculated.
• Receiver operating characteristic (ROC) curve analysis evaluated discriminatory accuracy.

Main Results:

• The MoCA demonstrated reasonable internal consistency (α = 0.75) and correlated significantly with the MMSE.
• MoCA showed superior psychometric properties and higher discriminatory accuracy (89%) than MMSE (65%).
• Optimal cut-off for MoCA was <24, and for MMSE was <27.

Conclusions:

• The MoCA is a validated cognitive screening tool for prisoners.
• Further validation against detailed cognitive assessments is recommended.