Evidence-based assessment/Instruments/Modified Overt Aggression Scale

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The Modified Overt Aggression Scale (MOAS) is a four-part behavior rating scale designed to measure four types of aggressive behavior as witnessed in the past week.[1]

Scoring[edit | edit source]

Total scores on the MOAS range from 0-40, with a higher score indicating more aggressive behavior. Each checked statement receives 1 point, then points from each section are summed.

Section scores are weighted as follows:

  • Scores from the "Aggression Against Property" section multiplied by 2;
  • Scores from the "Autoaggression" section multiplied by 3;
  • Scores from the "physical aggression" section multiplied by 4.

Weighted score are then added together to yield the total score. A scoring summary can be found at the bottom of the measure to aid in interpretation of responses.

External Links[edit | edit source]