Which of the following is TRUE?

• Humans cannot sense stimuli below the absolute threshold.
• Humans cannot be affected by stimuli below the absolute threshold at all.
• Stimuli presented below the absolute threshold can have a subtle, brief effect on behavior.
• Stimuli presented below the absolute threshold exert a strong, powerful effect on behavior

If you move your watchband up your wrist an inch or so, you will feel it for only a few moments. This best illustrates: 

• parallel processing
• sensory adaptation
• accomodation
• Weber's Law

As we look at a flower, the intensity of the color we see is related to the light wave’s:

• placement on the spectrum
• length
• hue
• amplitude

The eye’s “blind spot” is related to:

• light rays focusing too far in front of the retina.
• light rays focusing too far behind the retina.
• a cluster of cells around the fovea which contains cones, but no rods.
• an area without receptor cells where the optic nerve leaves the eye.

Rather than saying a person is “colorblind,” it would be more accurate to say that the person:

• has a blind spot.
• lacks red- or green-sensitive cones.
• is experiencing an overstimulation of the red- and green-sensitive cones.
• has an excess of blue-sensitive cones

The hammer, anvil, and stirrup are found in the:

• inner ear
• vestibular sacs
• middle ear
• outer ear

As you talk with a friend at a party, her voice is distinct from all the other voices you hear.  This illustrates the perceptual principle of: 

• grouping
• figure-ground
• proximity
• closure

Makers of 3-D movies rely most heavily on:

• the visual cliff.
• The Lyer Illusion
• retinal disparity. 
• monocular cues. 

After hearing that Bryce had served a prison sentence, Janet began to perceive his friendly behavior as insincere and manipulative. This best illustrates the impact of: 

• sensation. 
• bottom up processing.
• perceptual sets

Which of the following activities requires you to use the absolute threshold for sensation?

• telling the difference between sweet and salty
• detecting a tiny, faint light on a radar screen
• deciding if two glasses contain the same amount of water
• telling if your guitar is in tune