Sensation and Perception

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Which of the following is true?
The absolute threshold for any stimulus is a constant.
The absolute threshold for any stimulus varies somewhat.
The absolute threshold is defined as the minimum amount of stimulation necessary for a stimulus to be detected 75% of the time.
The absolute threshold is defined as the minimum amount of stimulation necessary for a stimulus to be detected 60% of the time.

The absolute threshold for any stimulus varies somewhat.

If you can just notice the difference between 10 and 11 pound weights, which of the following weights could you differentiate from a 100-pound weight? [1 pts.]
101-pound weight
105-pound weight
110-pound weight
There is no basis for prediction.

...

A decrease in sensory responsiveness accompanying an unchanging stimulus is called [1 pts.]
sensory fatigue.
accommodation.
sensory adaptation.
sensory interaction.

sensory adaptation

Which of the following is an example of sensory adaptation? [1 pts.]
finding the cold water of a swimming pool warmer after you have been in it for awhile
developing an increased sensitivity to salt the more you use it in foods
becoming very irritated at the continuing sound of a dripping faucet
witnessing a wolf attack and then being afraid of a chihuahua
all of the choices are correct

finding the cold water of a swimming pool warmer after you have been in it for awhile

Weber's Law states that [1 pts.]
the absolute threshold for any stimulus is a constant.
the jnd for any stimulus is a constant.
the absolute threshold for any stimulus is a constant proportion.
the jnd for any stimulus is a constant proportion.

the jnd for any stimulus is a constant proportion.

Given normal sensory ability, a person standing atop a mountain on a dark, clear night can see a candle flame atop a mountain 30 miles away. This is a description of vision's [1 pts.]
difference threshold.
jnd.
absolute threshold.
signal detection.
perception.

absolute threshold

In shopping for a new stereo, you discover that you cannot differentiation between the sounds of models x and y. The difference between x and y is below your [1 pts.]
absolute threshold.
signal detection.
receptor threshold.
difference threshold.

difference threshold.

Sensation is to _____________ as perception is to __________. [1 pts.]
recognizing a stimulus; interpreting a stimulus.
detecting a stimulus; recognizing a stimulus.
interpreting a stimulus; detecting a stimulus.
seeing; hearing.
tasting; smelling.

detecting a stimulus; recognizing a stimulus.

When admiring the texture of a piece of fabric, Jess usually runs her fingertips over the cloth's surface. She does this because [1 pts.]
if the cloth were held motionless, sensory adaptation to its feel would quickly occur.
the sense of touch does not adapt.
a relatively small amount of brain tissue is devoted to processing touch from the fingertips.
the sense of touch enhances the sense of vision.
all of the choices are correct

if the cloth were held motionless, sensory adaptation to its feel would quickly occur

Superman's eyes used __________, while his brain used __________. [1 pts.]
perception; sensation.
top-down processing; bottom-up processing.
bottom-up processing; top-down processing.
sensory adaptation; subliminal perception

...

________ are the raw data of experience, based on the activation of certain receptors located in the various sensory organs. [1 pts.]
Emotions
Cognitions
Thresholds
Perceptions
Sensations

Sensations

The point at which a person can detect a stimulus 50 percent of the time it is presented is called the ________. [1 pts.]
range threshold
noticeable threshold
absolute threshold
change threshold
difference threshold

absolute threshold

The lowest stimulus intensity required for detection is the ________ and the smallest noticeable difference between a standard stimulus intensity and another stimulus value is the ________. [1 pts.]
response criterion; sensory constant
difference threshold; absolute threshold
base value; just noticeable difference (jnd)
absolute threshold; difference threshold
sensory constant; just noticeable difference (jnd)

absolute threshold; difference threshold

Some people believe that ________ are messages that can be sent to consumers, prompting them to buy a product without their being aware of receiving such messages. [1 pts.]
below threshold perceptions
selective perceptions
adjusted threshold perceptions
subliminal stimuli
inductive perceptions

subliminal stimuli

The perceptual disorder in which a person has lost the ability to recognize familiar faces is [1 pts.]
parentism.
prosopagnosia.
habituation.
hollistic.
frequencisia

prosopagnosia.

Under certain conditions, an invisible image or word can ___________ a person's response to a later question. [1 pts.]
confuse
jnd
polarize
trick
prime

...

After constant exposure to an unchanging stimulus, the receptor cells of our senses begin to fire less vigorously, this phenomenon is called [1 pts.]
threshold difference.
sensory adaptation.
psychophysics.
subliminal messages.
priming effect.

sensory adaptation.

The study of the relationship between the physical characteristics of stimuli and our psychological experiences of them is [1 pts.]
the signal detection theory.
psychophysics.
Weber's Law.
absolute threshold.
jnd.

psychophysics.

Our __________are organized by meanings that our minds impose. [1 pts.]
sensations
perceptions
primes
neurons
thresholds

...

Sensory adaptation is beneficial because it allows us to focus our attention on informative changes in the environment without being distracted by uninformative constant stimulation. [1 pts.]
True
False

True

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