National Criminal Justice Officer Selection Inventory Squared (NCJOSI²)


Exam Highlights:

National Criminal Justice Officer Selection Inventory Squared – NCJOSI²
The NCJOSI² is IOS’ flagship entry level law enforcement examination. This examination has been rigorously researched and successfully used in highly litigious environments. The NCJOSI² combines a comprehensive cognitive ability measure with a measure of integrity. Research suggests that this is the most predictive combination of measures. The NCJOSI² was selected by a third-party expert as the best performing of all commercially available law enforcement examinations in an independent research study performed for one of the largest police departments in the nation. The NCJOSI² most successfully predicted job performance while minimizing disparity.

Exam Features:

  • Parallel Forms: Two (2) – Form 1, Form 2
  • Length: Cognitive Ability Measure – 80 items, Non-cognitive (Integrity) Measure – 120 items
  • Administration Time: 2 ½ Hours, plus 15 minutes for instructions

Measurement Domains:


  • Deductive Reasoning
  • Flexibility of Closure
  • Inductive Reasoning
  • Information Gathering
  • Problem Sensitivity
  • Selective Attention
  • Spatial Orientation
  • Verbal Comprehension
  • Verbal Expression
  • Visualization

Non-cognitive Measure-

  • Anti-Social Behaviors
  • Positive Outlook
  • Orderliness / Diligence
  • Socialization

Available Study Materials:

We recommend agencies secure study materials for candidates directly, or provide information on where to find legitimate and accurate preparation materials.

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