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The Humintell Blog July 14, 2023

Can AI Tell Your Politics By Looking At Your Face?

Believe it or not, the 2024 Presidential Election is right around the corner. And according to a new study out of Denmark, AI may be able to predict your political views.

A team of researchers based in Denmark and Sweden recently conducted a study to see if “deep learning techniques,” like facial recognition technology and predictive analytics can be used on faces to predict a person’s political views.

The study was entitled “Using deep learning to predict ideology from facial photographs: expressions, beauty, and extra-facial information” and published as an open access article in March 2023.

The Methodology

Tfigure 5he researchers used a public dataset of 3,233 images of Danish political candidates who ran for local office and cropped them to only show their faces (see example image to the left).

After that, they applied advanced techniques to assess their facial expressions and a facial beauty database to determine a person’s “beauty score.”

Using these data points, the scientists predicted whether the figures pictured were left-wing or right-wing.

According to Business Insider, “The study found that the tech accurately predicted the political affiliations 61% of time.

The model predicted that conservative candidates  “appeared happier than their left-wing counterparts” because of their smiles, whereas liberal candidates were more neutral.

Women who expressed contempt — a facial expression characterized by neutral eyes and one corner of the lips lifted — were linked to more liberal politics by the model.”

In addition, the researchers found that AI correlated the political candidate’s level of attractiveness with their politics.

Women deemed attractive by their beauty scores were predicted to have conservative views, though there was not a similar correlation between mens’ level of attractiveness and right-wing leanings.

The study’s writers say the results of this study, “confirmed the threat to privacy posed by deep learning approaches.”

Attractiveness and Political Ideology

Links between attractiveness and political ideology are nothing new.

One study entitled “Effect of physical attractiveness on political beliefs” examined the relationship between attractiveness and political beliefs.

“more attractive individuals are more likely to identify as conservative and Republican than less physically attractive citizens…results are consistent across datasets and persist when controlling for socioeconomic status and demographics” https://t.co/l1LlQWfjbU pic.twitter.com/TkWnFDRNHF

— Rob Henderson (@robkhenderson) August 8, 2020

As reported in the Guardian, “The researchers took data from the 1972, 1974 and 1976 American National Studies surveys which asked people to evaluate the appearance of others and also explored participants’ political beliefs, income, race, gender, and education.

These results were compared with the Wisconsin Longitudinal study which focused on the physical characteristics of more than 10,000 high school students who were rated by others on their level of attractiveness.”

The results of that study suggested that “more attractive individuals are more likely to report higher levels of political efficacy, identify as conservative, and identify as Republican.”

Facial Recognition Technology and Political Orientation

Facial recognitionSimilar research suggests that facial recognition technology can predict a person’s political orientation with 72% accuracy.

Published in Scientific Reports one study suggests that facial recognition technology can accurately predict someone’s political stance from their Facebook profile photo.

Michal Kosinski, an associate professor at Stanford University, applied a facial recognition algorithm to 1,085,795 faces obtain from online social media profiles.

Of this dataset, 977,777 came from dating website users in the U.S., UK, and Canada who had self-reported their political orientation.

The other 108,018 faces were from Facebook users in the U.S. who also self-reported their political orientation and additionally completed a 100-item personality test.

The algorithm compared each participant’s facial features to the average facial features of liberals and conservatives. The technology used these similarity measurements to determine the likelihood that a participant was either a conservative or a liberal.

The results showed that the algorithm was able to predict political orientation alarmingly well and with similar accuracy across countries and social media platforms.

Among U.S. Facebook users, this accuracy hit 73%. Among U.S. dating website users, accuracy was 72%. Among dating website users in the UK and Canada, accuracy reached 70% and 71%, respectively.

The post Can AI Tell Your Politics By Looking At Your Face? first appeared on Humintell.

Filed Under: Science

The Humintell Blog May 30, 2023

Can Smiling Improve Your Mood? Research Says Yes.

Emotions and Facial Expressions

We all know that emotions give our lives meaning, and life without emotions is impossible to imagine.

Emotions are a vestige of our evolutionary history and are primarily controlled by an archaic part of the brain.

This is why Dr. Matsumoto describes emotions as immediate, involuntary, automatic, and unconscious reactions to things that are important to us.

Emotions help us react in some situations with minimal conscious awareness and are triggered by a universal, underlying psychological theme.

When triggered, they recruit an organized system of reactions that produce specific physiological signatures, direct our cognitions, and produce specific types of feelings.

Importantly, emotions produce specific, nonverbal behavior in the face, voice, and body.

Different emotions are expressed by different, specific, unique facial configurations (facial expressions) that are universal to all cultures, regardless of race, nationality, ethnicity, religion, gender or any other demographic variable.

Facial Feedback Hypothesis

If emotions produce specific universal facial expressions, can facial expressions in turn affect your emotions? According to the facial feedback hypothesis, they can.

But is this actually true?

Scientists have been interested in the idea of a facial-feedback hypothesis since the 1800s (Source: Betterhelp) and modern researchers have continued to study the hypothesis to this day.

Smiling is Good for Your Heart

One study conducted by clinical psychologists Tara Kraft and Sarah Pressman showed the positive effects of smiling. Turns out, smiling can be good for your heart in stressful situations.

How Masks Hinder PolitenessFor their study, the researchers examined participants’ heartbeats, since stress and heart health are related.

17o participants were split into 2 groups: one knew what the study was about, while the other didn’t.

In the training stage, the researchers taught the volunteers how to either hold their faces in a neutral expression, hold a social smile (upper right hand image), or hold a Duchenne smile (upper left hand image).

The researchers monitored the participants’ heart rates as they performed various tasks; both groups were required to use their hand to quickly trace a star reflected in a mirror, followed by placing their hand in a bucket of ice water for one minute.

While completing these tasks, each person had to hold chopsticks in their mouth which activated muscles corresponding to a forced smile.

They found the participants who were instructed to smile, and in particular those whose faces expressed genuine or Duchenne smiles, had lower heart rates after recovery from the stress activities than the ones who held their faces in neutral expressions.

Even the volunteers who held chopsticks in their mouths, that forced the muscles to express a smile (but they had not explicitly been instructed to smile), had lower recovery heart rates compared to the ones who held neutral facial expressions.

Interestingly, those who smiled genuinely during the trial recovered the fastest, followed by people with fake (social) smiles. Those with neutral smiles had the slowest recovery.

Even Fake Smiles Can Improve Mood

Recent research also suggests that fake or social smiling can make people feel happier.

An international collaboration of researchers led by Stanford University research scientist Nicholas Coles published a study in Nature Human Behavior.

As part of the Many Smiles Collaboration, a total of 26 research groups from 19 different countries and over 3,800 participants were involved. The average age of the participants was 26 and over 70% were women.

The researchers created a plan that included three well-known techniques intended to encourage participants to activate their smile muscles:

  1. One-third of participants were directed to use the pen-in-mouth method
  2. One-third were asked to mimic the facial expressions seen in photos of smiling actors
  3. The final third were given instructions to move the corners of their lips toward their ears and lift their cheeks using only the muscles in their face

In each group, half the participants performed a small physical tasks and simple math problems while looking at cheerful images of puppies, kittens, flowers, and fireworks, and the other half simply saw a blank screen.

They also saw these same types of images (or lack thereof) while directed to use a neutral facial expression. After each task, participants rated how happy they were feeling.

After analyzing their data, the researchers found a noticeable increase in happiness from participants mimicking smiling photographs or pulling their mouth toward their ears.

Interestingly, the researchers didn’t find a strong mood change in participants using the pen-in-mouth technique but the evidence from the other two techniques was clear.

It provided a compelling argument that human emotions are somehow linked to muscle movements or other physical sensations.

For more on how smiling boosts your mood, visit this past blog post

The post Can Smiling Improve Your Mood? Research Says Yes. first appeared on Humintell.

Filed Under: Emotion, Science

The Humintell Blog April 19, 2023

Does Music Elicit Universal Emotional Responses?

It’s no mystery that major and minor chords in western music makes us feel good. But could this be because of an evolutionary trait?

Recent research led by Eline Adrianne Smit and colleagues from the MARCS Institute for Brain suggests this could be the case.

Turn to any major pop radio station in the Western world and you’ll likely recognize some familiar features in the songs including:

  • A formulaic structure
  • Themes of romance
  • A catchy melody in a major scale
  • A song less than three and a half minutes

These unique features of modern music are designed to make the audience feel good, so we listen on repeat. But why do these songs make us feel good?

For the last few decades, psychologists have wondered if there are features to music that elicit universal emotional responses in humans.

Could certain elements of music be hard-wired into the human central nervous system?

A Musical Study

A recent study tested how different communities with varying levels of exposure to Western music would respond emotionally to major melodies and minor melodies. According to Discover Magazine, “At least in Western cultures, major and minor melodies and harmony heavily influence emotional responses to music. Major chords and progressions are associated with positive emotions, and minor chords and progressions are associated with negative emotions.”Smit and colleagues asked musicians and non-musicians in Sydney, Australia as well as different communities from Papua New Guinea with varying degrees of exposure to Western music, to associate major and minor melodies with either happiness or sadness.

The Results

The researchers found that the degree of familiarity with Western music corresponded with the association between major melodies with happiness, and minor melodies with sadness.

While this association was present for some groups in Papua New Guinea, researchers did not find evidence for this association in the community that was the most remote.

This study suggests that familiarity through cultural exposure plays and important factor when associating major and minor melodies with happiness and sadness respectively.

Interestingly, major chords tend to appear more frequently than minor chords in popular music and research shows that humans are likely to attribute positive emotions to things that we are familiar with.

Universality in Music?

Lead researcher Smit also thinks there could be some associative conditioning at play. She makes the important point that people typically don’t listen to music in isolation. Instead we listen to music that fits the context of our situation.

For example, we would usually hear major music at an event like a wedding, whereas we might hear minor music at a funeral.

If specific features of music are combined with emotionally laden events often enough, then we will likely associate that musical feature with that specific emotion.

Some psychologists have suggested that music was a sort of social glue in our evolutionary history, helping to facilitate the development of humans as a deeply social species.

While this study does support that culture reinforces the association between major and minor melodies with happiness and sadness, Smit does note that, “there is still absolutely the possibility that particular aspects of music might be universal.”

Universal Emotions in Music

In similar research conducted in 2016, Psychologist Heike Argstatter sought to determine whether universal basic emotions are recognizable in music across cultures.

This study built on her previous research which found that, within one Western culture, both trained musicians and laypeople consistently categorized the same musical sequences into categories based on the same basic emotions.

Dr. Argstatter then sought to extend these findings to audiences in disparate cultural settings.

The results? Dr. Argstatter found evidence that all participants, regardless of culture, would identify the same emotions in the same pieces of music. This was especially true for happiness and sadness.

The post Does Music Elicit Universal Emotional Responses? first appeared on Humintell.

Filed Under: Emotion, Science

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