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Psychophysical Laws and Applications Quiz

#1

According to Weber's Law, the just noticeable difference (JND) is a constant fraction of the...

Stimulus intensity
Explanation

JND is constant proportion of stimulus intensity.

#2

The principle of 'just noticeable difference' (JND) is most closely associated with which psychophysicist?

Ernst Weber
Explanation

JND associated with Ernst Weber.

#3

The concept of 'absolute threshold' is most closely associated with which psychophysicist?

Gustav Fechner
Explanation

Absolute threshold associated with Gustav Fechner.

#4

Who is credited with the formulation of the 'just noticeable difference' (JND) concept?

Ernst Weber
Explanation

Ernst Weber formulated JND concept.

#5

The 'just noticeable difference' (JND) is also referred to as what in Fechner's terms?

Difference threshold
Explanation

JND is Fechner's difference threshold.

#6

Which psychophysical law states that the perception of a stimulus is proportional to its logarithm?

Fechner's Law
Explanation

Perception increases logarithmically with stimulus.

#7

In Stevens' Power Law, the exponent 'n' determines the relationship between the intensity of a stimulus and its perceived...

Sensation
Explanation

n determines stimulus-sensation relationship.

#8

Which psychophysical law suggests that the strength of a sensation grows as the logarithm of the stimulus intensity increases?

Fechner's Law
Explanation

Sensation grows logarithmically with stimulus intensity.

#9

According to Hick's Law, the time it takes for a person to make a decision depends on which factor?

Number of available choices
Explanation

Decision time depends on number of choices.

#10

Which psychophysical law states that the magnitude of the JND is proportional to the magnitude of the stimulus?

Weber's Law
Explanation

JND magnitude proportional to stimulus magnitude.

#11

The 'method of limits' is a technique used in psychophysics to measure what?

Absolute threshold
Explanation

Method to measure absolute threshold.

#12

According to Weber's Law, if you're holding a 10-pound weight, what would be the minimum weight difference required for you to notice a change?

1 pound
Explanation

Minimum difference to notice change is constant fraction of stimulus.

#13

Which psychophysical law states that the time it takes to process a decision increases logarithmically with the number of alternatives?

Hick's Law
Explanation

Decision time increases logarithmically with alternatives.

#14

In the context of psychophysics, what does the term 'suprathreshold' refer to?

Above the threshold of conscious perception
Explanation

Above threshold of conscious perception.

#15

The concept of 'just noticeable difference' (JND) is primarily associated with which type of sensory perception?

All of the above
Explanation

JND associated with all sensory perceptions.

#16

Which psychophysical law describes the relationship between the increase in stimulus intensity and the corresponding increase in perceived intensity?

Fechner's Law
Explanation

Relationship between stimulus and perceived intensity in Fechner's Law.

#17

Which psychophysicist is known for developing the concept of 'difference threshold'?

Ernst Weber
Explanation

Ernst Weber developed difference threshold concept.

#18

Which psychophysical law states that the time it takes to make a decision increases logarithmically with the number of choices?

Hick's Law
Explanation

Decision time increases logarithmically with choices.

#19

The 'method of constant stimuli' is a technique used in psychophysics to measure what?

Absolute threshold
Explanation

Method to measure absolute threshold.

#20

In Stevens' Power Law, what does the exponent 'b' represent?

Psychological magnitude
Explanation

Exponent 'b' represents psychological magnitude.

#21

Which psychophysical law suggests that the increase in intensity of a stimulus produces diminishing returns in terms of its perceived magnitude?

Stevens' Power Law
Explanation

Stimulus intensity increase gives diminishing returns in perceived magnitude.

#22

What is the formula for calculating the just noticeable difference (JND) in Weber's Law?

JND = k * log(I)
Explanation

Formula for calculating JND in Weber's Law.

#23

Who proposed the 'method of adjustment' as a psychophysical measurement technique?

Gustav Fechner
Explanation

Method of adjustment proposed by Gustav Fechner.

#24

Which psychophysical law states that the perceived intensity of a stimulus increases less than proportionally with its actual intensity?

Stevens' Power Law
Explanation

Perceived intensity increases less than proportionally with actual intensity.

#25

In Fechner's Law, what is the term 'S' typically used to represent?

Stimulus intensity
Explanation

Term 'S' represents stimulus intensity in Fechner's Law.

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