Upcoming Reading

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2016-06-01 33K 33 0 0

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Read experiment 1 in the article by Lee Brooks for Thursday March 29th. Are All Subliminal Messages Intentionally Inserted?. These messages tend not to be clear and obvious. Are All Subliminal Messages Intentionally Inserted?. ID: 344556 Download Presentation

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Upcoming Reading




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Upcoming Reading

Read experiment 1 in the article by Lee Brooks for Thursday March 29th

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Are All Subliminal Messages Intentionally Inserted?

These messages tend not to be clear and obvious

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Are All Subliminal Messages Intentionally Inserted?

These messages tend not to be clear and obvious

Could it be that our brains mistakenly see or hear messages that aren’t really there?

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Are All Subliminal Messages Intentionally Inserted?

These messages tend not to be clear and obvious

Could it be that our brains mistakenly see or hear messages that aren’t really there?

Do brains make stuff up!?

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Are All Subliminal Messages Intentionally Inserted?

These messages tend not to be clear and obviousCould it be that our brains mistakenly see or hear messages that aren’t really there? Do brains make stuff up!?

Absolutely! All the time.

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Are All Subliminal Messages Intentionally Inserted?

Is there really a dog or are the spots enough like a dog for your brain to fill in the rest?

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Are All Subliminal Messages Intentionally Inserted?

Some other examples you already know about :

Missing fundamental, color constancy, size constancy, the

Kaniza

triangle, stereo depth, the

blindspot

, illusory conjunctions

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Subliminal “Messages” Where you Least Expect Them

How did Vokey and Read test the idea that subliminal messages might just be a case of mistaken perception?

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Subliminal “Messages” Where you Least Expect Them

They examined passages from various sources (Jabberwokey and the 23rd Psalm) played backwards to identify candidate messages

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Subliminal “Messages” Where you Least Expect Them

Listeners were given each passage (backwards) and asked to listen for 12 possible messages

Listeners detected “messages” in the appropriate

passage when primed to expect it

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Subliminal “Messages” Where you Least Expect Them

Interpretation: Your brain is remarkably good at “active construction” of patterns amid a background of noise.

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Subliminal “Messages” Where you Least Expect Them

Interpretation: Your brain is remarkably good at “active construction” of patterns amid a background of noise.

Creative listening by (well-meaning?) public censors can go very wrong

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Subliminal “Messages” Where you Least Expect Them

Consider the trial of Judas PriestBand sued for inserting the message “do it” which allegedly lead to the suicide of two teens

Listen for “Do It”

The “do its”

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Subliminal “Messages” Where you Least Expect Them

Consider the trial of Judas Priest

Band sued for inserting the message “do it” which allegedly lead to the suicide of two teens

Band acquitted on the basis of expert testimony

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Expert Testimony !

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Subliminal “Messages” Where you Least Expect Them

With enough creativity and patience one can see “subliminal messages” just about anywhere:

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Subliminal “Messages” Where you Least Expect Them

Our perceptual mechanisms are great at extracting meaningful images from noisy stimuli. For example - the famous face on Mars:

Viking, 1976

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Subliminal “Messages” Where you Least Expect Them

Given a clearer picture it looks a lot less like a face:

Mars Global Surveyor, 2001

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The message is…

Don’t be fooled by messages!

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Memory

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Overview of Memory

Atkinson-Shiffrin Model

Sensory Signals

Sensory Memory

Short-Term Memory

Long-Term Memory

ATTENTION

REHEARSAL

RETRIEVAL

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Sensory Memory

Supplementary reading:

Cognition (on reserve)

Averbach

and

Sperling

(course pack) Part 1

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Capacity

Describe a simple experiment that could measure the capacity of “memory”

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Capacity

Describe a simple experiment that could measure the capacity of “memory”

Briefly present some letters or digits and then ask the subject to report them

Called “whole report”

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Capacity

+

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Capacity

F S F EG S A UT O C G

+

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Capacity

“Recall as many letters as you can”

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Capacity

George

Sperling

- Systematic investigation of memory capacity

Result: subjects accurately recall

about 4 items

What can you conclude from this result

?

Maybe subjects can only hold about 4 items?

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