This shows two people and a brain.
In "Mastermind," this was not the case. Credit: Neuroscience News

TV Quiz Shows Shed Light on Human Physiology Under Stress

Summary: Cognitive scientists used the British TV show “Mastermind” to study human physiology under high-stress conditions, impossible to replicate in a lab.

Analyzing contestants’ blinking patterns, the researchers gained insights into cognitive effort and stress responses. The study marks a novel approach to video-based neuroscience in real-world scenarios.

While blinking was linked to cognitive effort, differences between TV contestants and lab-based experiments highlight the need to understand how observed behaviors in controlled settings relate to real-world situations.

Key Facts:

  1. Researchers analyzed contestants’ blinking patterns on the TV show “Mastermind” to study stress responses.
  2. Blinking acted as a “punctuation of thought,” with contestants blinking at question and response starts.
  3. Differences between TV and lab results raise questions about the applicability of lab findings to real-world scenarios.

Source: University of Arizona

Quiz shows, where contestants answer rapid-fire questions in a high-stress, high-stakes environment, are an integral part of TV programming – and now they are demonstrating that they have research value.

By analyzing contestants’ behavior and patterns of blinking on the British TV show “Mastermind,” cognitive scientists at the University of Arizona have studied human physiology under conditions of stress that would be impossible to reproduce in the lab.

The results were published yesterday in the journal Psychophysiology.

“This is a dream I’ve had for a long time – to try to get physiological information out of video signals,” said Robert Wilson, senior author on the paper, who is an associate professor in cognition and neural systems at the UArizona Department of Psychology, in the College of Science.

On “Mastermind,” contestants sit in a big leather chair, Wilson said, answering rapid-fire questions under the glare of spotlights as a camera slowly zooms in on their face. The bright lights and slow camera work make it easy to identify blinks, and the stress of being interrogated on national TV cannot be re-created under lab conditions, he said.

“This is a feasible method for doing video-based neuroscience in outside-the-lab conditions so that we can get into situations that are closer to real-world scenarios,” said Skyler Wyly, the lead author of the study, who began this work as an undergraduate at UArizona and is now a doctoral student at Duke University.

How blinking is related to cognitive effort still needs to be explored, especially in real world tasks, Wilson said. However, he mentioned that there is a hypothesis that the more stressed humans are, the more they blink.

“We are yet to know about all the cognitive processes that modulate blinking,” Wilson said.

The researchers analyzed 25 episodes from two seasons of the game show to collect data from 100 contestants. A team of nearly 60 research assistants marked the onset and offset of every question and every response made by the contestants, as well as the time of every blink, all of which contributed to nearly 100,000 data points.

The researchers then analyzed the data to determine how blinking varied across individuals at different points in the game and compared their findings to those from less-stressful experiments performed in previous lab-based studies.

One key finding from the lab is that blinking acts like a “punctuation of thought,” Wilson said, and this result held true on TV. Contestants blinked at the “punctuation marks” of the game – at the start of each question and at the start of their response.

They also reduced their blinking while they were thinking about how to answer, which is also in line with results from the lab, Wilson said. The stress of “Mastermind” was also apparent in contestants’ blinking, with their blink rate nearly twice the number of the usual 20 blinks per minute of a person who is at rest.

However, some findings differed from lab tests. For example, in the TV show, older adults blinked more than younger adults, and women blinked more than men. In the lab, there are no differences between these groups, Wilson said.

There were also some behavioral differences. In lab tests, people tend to slow down and respond more carefully and accurately after they make an error. In “Mastermind,” this was not the case.

It’s not clear what is driving these differences between the lab and TV, but according to Wilson, the differences are the most exciting part of the research. One of the biggest questions in psychology right now, Wilson said, is how much of what is observed in the lab relates to what is going on in the real world.

“This question is critical, not only for our basic understanding of the mind, but also more practically if we want to find lab tests that can diagnose mental illness,” Wilson said.

For the researchers at UArizona, blinks are just the beginning, and there is so much information in video signals, Wilson said. The way people look, breathe and fidget in their seat can be pulled out by modern computer vision techniques. This can help researchers get a multidimensional measure of physiology.

“This is exactly what we need to study – the psychophysiology of real human behavior and real human thinking,” Wilson said.

About this stress research news

Author: Niranjana Sahasranamam Rajalakshmi
Source: University of Arizona
Contact: Niranjana Sahasranamam Rajalakshmi – University of Arizona
Image: The image is credited to Neuroscience News

Original Research: Open access.
The psychophysiology of Mastermind: Characterizing response times and blinking in a high-stakes television game show” by Robert Wilson et al. Psychophysiology


The psychophysiology of Mastermind: Characterizing response times and blinking in a high-stakes television game show

Television game shows have proven to be a valuable resource for studying human behavior under conditions of high stress and high stakes. However, previous work has focused mostly on choices—ignoring much of the rich visual information that is available on screen.

Here, we take a first step to extracting more of this information by investigating the response times and blinking of contestants in the BBC show Mastermind.

In Mastermind, contestants answer rapid-fire quiz questions while a camera slowly zooms in on their faces. By labeling contestants’ behavior and blinks from 25 episodes, we asked how accuracy, response times, and blinking varied over the course of the game.

For accuracy and response times, we tested whether contestants responded more accurately and more slowly after an error—exhibiting the “post-error increase in accuracy” and “post-error slowing” which has been repeatedly observed in the lab.

For blinking, we tested whether blink rates varied according to the cognitive demands of the game—decreasing during periods of cognitive load, such as when pondering a response, and increasing at event boundaries in the task, such as the start of a question.

In contrast to the lab, evidence for post-error changes in accuracy and response time was weak, with only marginal effects observed. In line with the lab, blinking varied over the course of the game much as we predicted.

Overall, our findings demonstrate the potential of extracting dynamic signals from game shows to study the psychophysiology of behavior in the real world.

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