Supplemental Readings and note from Dr. Matsumoto

Tips for Watching the Hands

How can officers better “watch the hands”? Mike Willis, Law Enforcement National Training and Program Director for the US Deputy Sheriff’s Association, shares some tips.


Affective and predatory violence: from evolutionary adaptation to psychiatric morbidity

Note: This research matches what we teach in terms of two types of violence.


10 Tips for Felony/High Risk Traffic Stops

“It’s a nationwide epidemic in law enforcement, cops at the end of pursuits or situations running up to vehicles. It’s the worst thing we could be doing. It’s getting people killed,” says Mike Willis. “This has got to stop. This mindset has got to stop. Let’s stay back behind cover and do it safer.”


7 more tips for off-duty officer safety

Several recent events served as a reminder that off-duty officers risk coming under attack, as well as coming into contact with crimes in progress while not in uniform. Here are seven thoughts on staying safe when you’re not on the job.


10 non-verbal signs all officers should be able to recognize and interpret

When it comes to securing and maintaining your tactical advantage, the ability to recognize and interpret non-verbal communication when dealing with potentially troublesome subjects is one of the most powerful officer safety tools you have.


Dave Smith: Pay Attention or Pay the Piper

Don’t let the distractions presented by police and private technology make you a casualty.


How to watch the hands

It is imperative that you be able to recognize when suspects are using their hands to access and deploy weapons so you know how to respond. Never bring a control hold to a gun fight.


Preventing Attacks Using Targeted Violence Manifestos — LEB

The authors of the manifestos used these triggers, motivations, and grievances to explain and justify engaging in a violent attack.


Understanding Bombers’ Motivation: A Historical Study

After spending 25 years studying explosives and bombers, the author asks himself the same question after every explosion: What could have made someone commit such a heinous act?


Disgust as an Essentialist Emotion that Signals Nonviolent Outgrouping with Potentially Low Social Costs

This article is yet another that empirically demonstrates a link between disgust and motivations for elimination of hated (disgusted) objects.


Parasitic Disgust

While you might not want to think much about something disgusting, our brain’s disgust response may be more revealing than you know.


Emotions Expressed in Speeches by Leaders of Ideologically Motivated Groups Predict Aggression

New research entitled “Emotions expressed in speeches by leaders of ideologically motivated groups predict aggression” was recently published in the journal of Behavioral Sciences of Terrorism and Political Aggression.


The Role of Emotion in Predicting Violence

Emotion, one crucial aspect of human behavior often overlooked by researchers, operators, and policymakers who often view it as too “soft” for serious consideration or research, serves a crucial purpose in understanding any individual or group behavior.


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