Tag Archives: Inattentional blindness

Are you Situationally Aware?

Apollo Robbins

Apollo Robbins

“Inattentional blindness” is an example of distraction and unawareness of the present moment.
Apollo Robbins’ illustrated the potentially serious consequences of inattention in his interactive Las Vegas, USA show, “The Gentleman Thief.”

He tells “targets” in the audience that he is about to steal from them, then uses visual illusions, proximity manipulation, diversion techniques, and attention control, to complete his imperceptible heists.

Unlike in real life, Robbins returns belongings to owners.
Former US President Jimmy Carter’s Secret Service agents were among those who  reclaimed their belongings.

These illustrations help people improve perceptual capabilities.
This increased awareness can reduce traffic accidents, industrial mishaps, and security violations.

The U.S. Department of Defense deploys Robbins’ skills at its Special Operations Command research and training facility at Yale University.

Barton Whaley

Barton Whaley

Defense application of these perceptual manipulation skills were identified by Barton Whaley of the U.S. Naval Postgraduate School and Susan Stratton Aykroyd in their Textbook of Political-Military Counterdeception.

Their historical survey of deception and counter-deception practices noted that amateur magicians’ practices were more advanced than those used by U.S. political or military intelligence analysts in the 1970s.

Stephen Macknik

Stephen Macknik

SUNY Downstate’s Stephen Macknik and Susana Martinez-Conde collaborated with Robbins on Sleights of Mind: What the Neuroscience of Magic Reveals about Our Everyday Deception.

Their empirical results supported Robbins’s observation that the eye will follow an object moving in an arc without looking back to its point of origin.

This perceptual tendency enables Robbins to distract audience members and to remove their possessions from their bodies.

Susana Martinez-Conde

Susana Martinez-Conde

Perceptual errors in illusions can suggest diagnostic and treatment methods for brain trauma, autism, ADHD, and Alzheimer’s disease.

These conditions may improve when patients practice observing illusion performances because they learn to train their attention and to focus on the most important aspects of their environment.

At the same time, they can suppress distractions that lead to disorientation and “inattentional blindness” (intently focusing a single task while overlooking things in plain sight).

Richard Wiseman

Psychologist and illusionist Richard Wiseman of the University of Hertfordshire demonstrated inattentional blindness when viewers failed to notice environmental changes while they focused on a card trick. 

Wiseman used these perceptual anomalies as a metaphor.
He suggested that people can recognise opportunities in life when they intentionally increase their attention.

Daniel Levin

Daniel Levin

Daniel Simons

University of Illinois’s Daniel Simons and Daniel Levin of Vanderbilt University demonstrated that observers were unaware of a person in a gorilla suit walking near people passing a basketball .

With Harvard’s Christopher Chabris, Simons reported that half of the observers said they missed this unusual detail when they focused on counting the number of ball passes by one team.

Christopher Chabris

Christopher Chabris

However, the same people easily recognized the gorilla when they were not asked to focus on a distraction task.

Edward Vogel

This finding shows that most people are unable to effectively “multitask” because they have limited ability to hold a visual scene in short-term memory (VSTM), suggested University of Chicago’s Edward K. Vogel and Maro Machizawa of Hiroshima University and separately by Vanderbilt’s René Marois and J. Jay Todd.

Gustav Kuhn

Gustav Kuhn

Gustav Kuhn of University of London collaborated with illusionist Alym Amlani and Ronald Rensink of University of British Columbia to classify cognitive, perceptual, and physical contributors in Towards a Science of Magic:

  • Ronald Rensink

    Physical misdirection by a magician’s gaze or gesture,

  • Psychological misdirection with a motion or prolonged suspense,
  • Optical illusions that distort the size of an object,
  • Cognitive illusions to prolong an image after the object has been removed,
  • Physical force and mental force influence “freely chosen” cards.

Rene Marois-J Jay Todd

Perceptual and cognitive illusions can cause people not to see things that are present.
This effect can lead to overlooking interpersonal cues, life opportunities.
and more dangerously, inattention in traffic accidents, and victimization.

Mindful awareness helps people pay attention to the present experience and to opportunities and to  mitigate potential perceptual misinformation.

-*How to you maintain focus to reduce “inattentional blindness”?

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©Kathryn Welds

Task Switching Skills Improved With Musical Training

Ira Hyman

Ira Hyman

“Multitasking” is more accurately described as “task switching” because people typically can’t effectively sustain split attention.
However, it is possible to alternate between two mental tasks, but there is a “cognitive switching cost” in decreased speed and performance accuracy.

S. Matthew Boss

S. Matthew Boss

One vivid example of performance decrements when performing simple “multitasking” is illustrated in a study of walking while using a mobile phone, conducted by Western Washington University’s Ira E. Hyman Jr., S. Matthew Boss, Breanne M. Wise-Swanson, Kira E. McKenzie, and Jenna M. Caggiano.

Ira Hyman-Unicycling Clown Attentional BlindnessThey found that walking and talking caused most volunteers to experience “inattentional blindness” to unicycling clown.

Breanne M Wise-Swanson

Breanne M Wise-Swanson

In addition, the “multitasking” participants walked more slowly, changed directions more frequently, and were less likely to acknowledge other people than individuals.

Hyman and team concluded, “Doing more than one task at a time, especially more than one complex task, takes a toll on productivity,” and went on to note the dangers of driving while talking on a phone.
In fact, a previous blog reviewed the evidence for reduced driving performance when listening to music, a less-demanding activity than texting or talking on a telephone.

Ranate Meuter

Ranate Meuter

Even switching between two well-practiced languages can reduce cognitive processing speed, found Queensland University of Techology’s Renata Meuter and University of Oxford’s Alan Allport.

They asked bilingual participants to name numerals in their first language or second language in an unpredictable sequence.
Participants responded more slowly when they switched to the other language, indicating a “cognitive switching cost.”

Volunteers named digits associated with a background color in their first language or second language.
They named digits in their second language more slowly, but were slower in their first language after the language changed from the previous cue.

Jeffrey Evans

Jeffrey Evans

Involuntary persistence of the second-acquired language interfered with participants actively suppressing their original language, leading to delays when responding in their more well practiced “birth tongue,” they argued.

As tasks become more complex, the performance-hampering effects of task switching increase, according to United Stated Federal Aviation Authority’s Joshua Rubinstein with Jeffrey Evans, and David Meyer of University of Michigan, who evaluated switching between different task like solving math problems or classifying geometric objects.

David Meyer

David Meyer

Like Meuter and Allport, they noted that people switching tasks navigate two stages of “executive control:”

  • Goal shifting: “I want to do this now instead of that,”
  • Rule activation: “I’m turning off the rules for that and turning on the rules for this”.Rubinstein’s team estimated that traversing these phases can reduce productivity by much as 40 percent, and noted that the problem is compounded for individuals with damage to the dorsolateral prefrontal cortex.
Linda Moradzadeh

Linda Moradzadeh

However, musical training seems to reduce the costs of task switching, found York University’s Linda Moradzadeh, Galit Blumenthal, and Melody Wiseheart.
This team matched more than 150 similar age and socioeconomic status participants who were also:

  • Monolingual musicians (averaging 12 years of musical training) or
  • Bilingual musicians (averaging 12 years of musical training) or
  • Bilingual non-musicians or
  • Monolingual non-musicians.
Galit Blumenthal

Galit Blumenthal

Volunteers performed task switching and dual-task challenges, along with intelligence and vocabulary measures.
Musicians demonstrated fewer global and local switch costs compared with non-musicians and bilingual volunteers.
This finding contrasts other results regarding bilingualism’s advantage for task switching performance in a previous blog post.

Melody Wiseheart

Melody Wiseheart

In addition, Moradzadeh’s team found no benefit of combining bilingual expertise with musical training to reduce task-switching costs,

These results suggest that musical training can contribute to increased ability to shift between mental sets in both task switching and dual-task efforts, thanks to “superior ability to maintain and manipulate competing information in memory, allowing for efficient “global” or holistic processing.”

-*To what extent do you find “multitasking” an effective practice to accomplish cognitive tasks?

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