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The Humintell Blog April 29, 2026

Master the Science of Nonverbal Behavior

What if everything you thought you knew about emotions was only half the story?

In this opening episode of the Nonverbal ACEs Masters Series, Dr. David Matsumoto — one of the world’s foremost authorities on emotion science, cross-cultural psychology, and the universality of facial expressions — challenges practitioners to go deeper than conventional training ever goes.

Drawing on decades of research spanning evolutionary biology, FACS methodology, and cross-cultural studies, Dr. Matsumoto unpacks:

  • Why facial expressions are biological tools, not cultural inventions — and what that means for how you read clients
  • The “open system” model of emotion: how triggers are learned, but responses are hardwired
  • Display Rules vs. Instrumental Behaviour — the two distinct layers of cultural influence that mask what clients truly feel
  • Why “Universalist” vs. “Constructivist” is a false debate — and what actually bridges them in clinical practice
  • What micro-expressions and subtle expressions reveal that macro-behaviour conceals

Whether you’re a therapist, psychologist, or coach, this episode reframes emotion not as a psychological concept — but as a biological system you can learn to read with precision.

🎯 FREE ACCESS: Watch all five episodes in the Nonverbal ACEs Masters Series: 👉 nonverbalaces.com/nvmaster-series

ABOUT DR. DAVID MATSUMOTO

Dr. David Matsumoto is a Professor of Psychology at San Francisco State University, Director of Humintell, and one of the world’s leading researchers in emotion, nonverbal behaviour, and cross-cultural psychology. His work is used by intelligence agencies, law enforcement, and clinical practitioners globally.

ABOUT THE NONVERBAL ACES MASTERS SERIES

The Masters Series brings together five world-leading experts in nonverbal behaviour, emotion science, trauma, values, and influence — giving mental health and coaching professionals the science-backed skills to read behaviour at a deeper level and transform client outcomes.

The post Master the Science of Nonverbal Behavior first appeared on Humintell | Master the Art of Reading Body Language.

Filed Under: Emotion, Nonverbal Behavior, Science

The Humintell Blog April 4, 2025

Dogs May Use Blinking To Bond With Other Dogs

Did you know? The subtle nonverbal exchange of blinking back at someone who blinks at you helps humans and primates bond. Now according to a new study, dogs may also use blinking as a form of connecting to other canines.

In their study entitled “If you blink at me, I’ll blink back. Domestic dogs’ feedback to conspecific visual cues“, researchers out of the University of Parme, “investigated the behavioral and physiological responses of 54 domestic dogs to videos of conspecifics performing blink”.

Research has already shown domestic dogs tend to blink more around other dogs. They also appear to blink to keep the peace with their canine companions—and humans as well—when tensions rise.

The Methodology

puppy-dog-eyesLead researcher Canori and her colleagues created a variety of 12-second videos of a terrier, a cocker spaniel, or a border collie looking at the camera. In some clips, the dogs were blinking, and in others, they weren’t.

A third set of videos showed the dogs licking their noses, a well-known gesture that can signal eagerness or frustration in dogs.

The researchers then edited the videos and strung them together into 71-second clips. In clips with blinking and nose licking, these movements occurred every 4 seconds throughout the clip.

The team then showed the videos on a large screen and in random order to each of 54 adult pet dogs of various breeds who had never interacted with the dogs in the videos.

Researchers outfitted the canine viewers with heart monitors to assess their emotional reactions and also filmed them to spot blinking and other behaviors.

The Results

A few of the dogs got bored and fell asleep but the rest blinked about 16% more on average when watching the other dog blinking than during the two other kinds of scenes.

They found that when dogs witnessed other dogs blinking, they were more likely to blink. They compared these habits to the other behaviors such as nose licking and remaining still and attentive.

Interestingly, only the blinking caused the mimicry effect. Experts suggests that this nonverbal behavior is similar to when we see others yawn and then yawn ourselves.

The researchers suggests that blinking has been a means to express non-aggressive intentions towards members of their own species.

Reciprocal blinking in dogs might help to:

  • Facilitate social bonds
  • Cope with frustration
  • Communicate non-aggressive intentions

Similar to yawning, researchers believe this behavior is related to emotion contagion; the phenomenon when someone’s emotions lead to or produce similar emotions to others.

Even if the blinking is purely reflexive, the results suggest dogs have evolved to use it in meaningful ways.

Researcher Francesconi notes the animals showed no signs of stress in their faces or heart rates while watching the videos.

“Blinking could be a way, for example, to signal, ‘I’m relaxed, and you can be, too.’”

The post Dogs May Use Blinking To Bond With Other Dogs first appeared on Humintell | Master the Art of Reading Body Language.

Filed Under: Emotion, Nonverbal Behavior, Science

The Humintell Blog January 29, 2025

Why Laughter is Good for the Soul and Your Health

A recent review published last year in the journal Plos One found that spontaneous laughter leads to health benefits.

The article combined the results from eight separate studies to answer the question: Does spontaneous laughter reduce cortisol levels?

What is Cortisol?

Cortisol is an essential hormone that affects almost every organ and tissue in your body.

It’s produced by the adrenal glans and plays many important roles, including: maintaining blood pressure, supporting immune function, boosting metabolism, and helping you stay awake.

When you are under stress, your body produces more cortisol; therefore, it is a good measure of stress levels. Too much cortisol can lead to weight gain, digestive problems, muscle weakness, depression, and anxiety.


Universal Laughter and Deception


Laughter as Medicine

Since the 1970s, medical experts have learned that laughter can boost pain tolerance and improve overall well-being.

This recent meta-analysis identified eight studies in which participants were encouraged to laugh by watching a funny video, working with a laughter therapist, or participating in a self-administered laughter program.

Some of the studies measured participants’ cortisol levels before and after a laughter session and others included control groups, which measured cortisol levels of participants without laughter.

Combining the data, researchers found that cortisol levels fell by 31.9% for people who participated in laughter interventions — and even a single laughter session led to a 36.7% reduction in cortisol. It didn’t matter how long participants laughed; any laughter led to reductions in cortisol.

Their analysis concluded that “spontaneous laughter is associated with greater reduction in cortisol levels as compared with usual activities, suggesting laughter as a potential adjunctive medical therapy to improve well-being.”

Other Health Benefits of Laughter

universal laughter and deceptionThis recent review builds on previous research that has found that laughter can improve your overall health, well-being, and life satisfaction.

Here are few studies and benefits of laughter:

  • A 2018 review found that laughter and humor interventions appear to enhance well-being in older adults.
  • Laughter is also found to improve mental health and bolster personal development.
  • Evidence suggests that laughter helps improve cardiovascular health.
  • Laughter can decrease pain perception. One study found that laughter therapy reduced pain scores of people living with terminal cancer by nearly half.

The take-home message: Laughter is good medicine, and there is data to prove it. So do your best to find opportunities to laugh and giggle as often as possible.

The post Why Laughter is Good for the Soul and Your Health first appeared on Humintell | Master the Art of Reading Body Language.

Filed Under: Nonverbal Behavior, Science

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