Warm Up: What was a mistake that you made once, and only once.

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Presentation transcript:

Warm Up: What was a mistake that you made once, and only once. How did you realize you messed up?

Processing, Illusions, and a little bit of MAGIC!

Bottom Up Processing When we respond to a stimulus in the world without prior knowledge or background Think of a bonfire. The first time you sit too close

Top Down Processing When we approach situations with prior knowledge or ideas, and stimulus is weak, we rely more on inner thoughts than outer perceptions Back to the bonfire Let’s not sit as close this time!

Selective Attention Perceptions about objects change from moment to moment. We can perceive different forms of the Necker cube; however, we can only pay attention to one aspect of the object at a time. OBJECTIVE 1| Describe the interplay between attention and perception. Necker Cube

Inattentional Blindness Inattentional blindness refers to the inability to see something in front of us. Usually because we are focused on something else Let’s watch this video: https://www.youtube.com/watch?v=vJG698U2Mvo And then this one! https://www.youtube.com/watch?v=b7LuvAM6XLg

Change Blindness Change blindness is a form of inattentional blindness, the classic example of this is the ol’ giving directions switcheroo. A more in-depth discussion of which is here! https://www.youtube.com/watch?v=VkrrVozZR2c

Perceptual Illusions Illusions provide good examples in understanding how perception is organized. Studying faulty perception is as important as studying other perceptual phenomena. OBJECTIVE 2| Explain how illusions help us understand some of the ways we organize stimuli into meaningful perceptions.

Muller-Lyer illusion

Perceptual Constancy Perceiving objects as unchanging even as illumination and retinal images change. Perceptual constancies include constancies of shape and size. OBJECTIVE 9| Explain the importance of perceptual constancy. Shape Constancy

Size-Distance Relationship

Size-Distance Relationship The distant monster appears bigger because of distance cues.

Ponzo illusion

Size-Distance Relationship https://www.youtube.com/watch?v=aS-vzPuZzuk

WHAT? Here’s how it works: https://www.youtube.com/watch?v=gJhyu6nlGt8

The Ames room is designed to demonstrate the size-distance illusion.

Perception & Human Factors Human Factor Psychologists design machines that assist our natural perceptions. OBJECTIVE 16| Describe the role human factors psychologists play in creating user-friendly machines and work settings. Photodisc/ Punchstock Courtesy of General Electric The knobs for the stove burners on the right are easier to understand than those on the left.

Perceptual Clues and Hidden Messages in Advertising Big title, simple concept: A lot of advertisers/companies/etc. will use visual clues and optical illusions to serve as an “Easter Egg” in their ads.