Question 1

​Who developed both the two-point threshold and the concept of the just noticeable difference?

Accepted Answer

The two-point threshold and the concept of just noticeable difference were both developed by German physiologist Ernst Heinrich Weber, who is known as one of the founders of experimental psychology.

Question 2

According to Fechner,the effects of stimulus intensities are not ____ but are ____ to the amount of sensation that already exists.​

Accepted Answer

Fechner's law suggests that the strength of a sensation grows as the logarithm of stimulus intensity, meaning that the effects of stimulus intensities are not absolute but are relative to the amount of sensation that already exists.

Question 3

Fechner's flash of insight about the mind-body connection was that there is a(n)____ relationship between a mental sensation and a material stimulus.​

Accepted Answer

Fechner's insight was that there is a quantitative relationship between a mental sensation and a material stimulus, meaning that changes in stimulus intensity can be measured in terms of the changes they produce in sensory experience. This insight laid the groundwork for psychophysics, which studies the relationship between physical stimuli and the sensations and perceptions they produce.

Question 4

As a form of occupational therapy,Fechner ____.​

Accepted Answer

Gustav Fechner, in his period of recovery, engaged in various simple, manual tasks as a form of occupational therapy. These tasks included chopping vegetables, making strings and bandages, grinding sugar, and dipping candles. These activities helped him cope with his mental and physical health issues.

Question 5

Fechner proposed two ways to measure the lowest level of a sensation.One was the point of stimulus intensity below which no sensation is reported and above which subjects do experience a sensation;the other was ____.​

Accepted Answer

Fechner proposed two ways to measure the lowest level of a sensation. One was the point of stimulus intensity below which no sensation is reported and above which subjects do experience a sensation; the other was whether or not a stimulus is present or absent, sensed or not sensed.

Question 6

Weber's Law,the formulation of how much change in a stimulus is required for a subject to detect it,rests on the measurement of the ____.​

Accepted Answer

Weber's Law states that the Just Noticeable Difference (JND), or the smallest detectable difference between two stimuli, is proportional to the magnitude of the stimuli. Therefore, the measurement of the JND is crucial in understanding Weber's Law.

Question 7

The modern notion of subliminal perception rests on the idea that the threshold of perception or consciousness can be determined.The first experimental illustration of psychological threshold was demonstrated by ____.​

Accepted Answer

Weber was the first to experimentally demonstrate the concept of a psychological threshold, known as Weber's Law, which relates to the perception of changes in a given stimulus.

Question 8

​What is the smallest detectable difference between two stimuli?

Accepted Answer

The smallest detectable difference between two stimuli is known as the just noticeable difference (JND). This concept is also called the difference threshold, and it refers to the smallest amount by which two stimuli can differ and still be perceived as different at least half of the time.

Question 9

​What was the ratio of a weight to its just noticeable difference weight when they were lifted? What was the ratio of a weight to its just noticeable difference weight when the weights were placed in the subject's hands?

Accepted Answer

The correct ratio for a weight to its just noticeable difference when they were lifted is 1:40, and when the weights were placed in the subject's hands, the ratio is 1:30. This is based on Weber's Law, which describes the relationship between the actual change in a physical stimulus and the perceived change.

Question 10

Which of the following is true of Fechner?​

Accepted Answer

Fechner taught at Leipzig, developed the notion of the pleasure principle, seriously damaged his eyes by looking at the sun through colored glasses, and was "cured" of some symptoms by eating spiced raw ham soaked in Rhine wine and lemon juice.

Question 11

Weber's experiments led to two important contributions: (a)further research and (b)the focus of attention of later physiologists and the new psychology on the development of ____.​

Accepted Answer

Weber's work emphasized the importance of experimental methods for studying mind-body relationships, which influenced later research in psychology and physiology.

Question 12

Weber suggested that discrimination among sensations depended on ____.​

Accepted Answer

Weber's law states that discrimination among sensations depends on the relative difference or ratio between two stimuli. This means that for the same difference to be noticeable, the magnitude of the stimulus needs to increase proportionally with its intensity. So, the bigger the intensity of the stimulus, the bigger the difference that is required to notice a change. This law applies to most of the senses, including vision, audition, and touch, and is useful in explaining how people perceive differences in various stimuli.

Question 13

Fechner's most important contribution to psychology was the ____.​

Accepted Answer

Fechner's most important contribution was the quantification of the mind-body relationship, which he achieved through his work on psychophysics, establishing a mathematical relationship between physical stimuli and their perceived effects.

Question 14

After Fechner obtained the very important appointment of professor at the University of Leipzig,he ____.​

Accepted Answer

The answer of After Fechner obtained the very important appointment...

Question 15

The point of sensitivity at which the least amount of change in a stimulus gives rise to a change in a sensation is a definition of ____.​

Accepted Answer

The answer of The point of sensitivity at which the...

Question 16

Fechner wrote satirical essays ridiculing medicine and science under the pen name ____.​

Accepted Answer

Fechner used the pen name Dr. Mises for his satirical essays criticizing medicine and science.

Question 17

Whose major contributions to the new psychology involved the two-point threshold and the just noticeable difference?​

Accepted Answer

Ernst Weber is known for his work on the two-point threshold and the just noticeable difference, which are foundational concepts in the field of psychophysics.

Question 18

With regard to the speed of the nerve impulse,perhaps the most important conclusion of Helmholtz's research for psychology was the determination ____.​

Accepted Answer

Helmholtz's research determined that nerve impulses were not instantaneous and that there was a delay between perception and reaction. This supported the idea that thought and movement were not simultaneous, which was an important conclusion for psychology. The other options (A, C, D, E) are not directly related to this conclusion.

Question 19

While euphoric and suffering from delusions of grandeur,Fechner ____.​

Accepted Answer

The answer of While euphoric and suffering from delusions of...

Question 20

Who devised a theory of color vision as well as conducted research on audition?

Accepted Answer

Hermann von Helmholtz is known for his theory of trichromatic color vision, which proposes that color vision is based on three types of cones in the retina, each sensitive to different wavelengths of light. He also conducted extensive research on audition, including the anatomy of the ear and the perception of sound.

Quiz 3: Physiological Influences on Psychology

Who developed both the two-point threshold and the concept of the just noticeable difference?

According to Fechner,the effects of stimulus intensities are not but are to the amount of sensation that already exists.

Fechner's flash of insight about the mind-body connection was that there is a(n) ____ relationship between a mental sensation and a material stimulus.

As a form of occupational therapy,Fechner ____.

Fechner proposed two ways to measure the lowest level of a sensation.One was the point of stimulus intensity below which no sensation is reported and above which subjects do experience a sensation;the other was ____.

Weber's Law,the formulation of how much change in a stimulus is required for a subject to detect it,rests on the measurement of the ____.

The modern notion of subliminal perception rests on the idea that the threshold of perception or consciousness can be determined.The first experimental illustration of psychological threshold was demonstrated by ____.

What is the smallest detectable difference between two stimuli?

What was the ratio of a weight to its just noticeable difference weight when they were lifted? What was the ratio of a weight to its just noticeable difference weight when the weights were placed in the subject's hands?

Which of the following is true of Fechner?

Weber's experiments led to two important contributions: (a) further research and (b) the focus of attention of later physiologists and the new psychology on the development of ____.

Weber suggested that discrimination among sensations depended on ____.

Fechner's most important contribution to psychology was the ____.

After Fechner obtained the very important appointment of professor at the University of Leipzig,he ____.

The point of sensitivity at which the least amount of change in a stimulus gives rise to a change in a sensation is a definition of ____.

Fechner wrote satirical essays ridiculing medicine and science under the pen name ____.

Whose major contributions to the new psychology involved the two-point threshold and the just noticeable difference?

With regard to the speed of the nerve impulse,perhaps the most important conclusion of Helmholtz's research for psychology was the determination ____.

While euphoric and suffering from delusions of grandeur,Fechner ____.

Who devised a theory of color vision as well as conducted research on audition?

Quiz 3: Physiological Influences on Psychology

​Who developed both the two-point threshold and the concept of the just noticeable difference?

According to Fechner,the effects of stimulus intensities are not ____ but are ____ to the amount of sensation that already exists.​

Fechner's flash of insight about the mind-body connection was that there is a(n) ____ relationship between a mental sensation and a material stimulus.​

As a form of occupational therapy,Fechner ____.​

Fechner proposed two ways to measure the lowest level of a sensation.One was the point of stimulus intensity below which no sensation is reported and above which subjects do experience a sensation;the other was ____.​

Weber's Law,the formulation of how much change in a stimulus is required for a subject to detect it,rests on the measurement of the ____.​

The modern notion of subliminal perception rests on the idea that the threshold of perception or consciousness can be determined.The first experimental illustration of psychological threshold was demonstrated by ____.​

​What is the smallest detectable difference between two stimuli?

​What was the ratio of a weight to its just noticeable difference weight when they were lifted? What was the ratio of a weight to its just noticeable difference weight when the weights were placed in the subject's hands?

Which of the following is true of Fechner?​

Weber's experiments led to two important contributions: (a) further research and (b) the focus of attention of later physiologists and the new psychology on the development of ____.​

Weber suggested that discrimination among sensations depended on ____.​

Fechner's most important contribution to psychology was the ____.​

After Fechner obtained the very important appointment of professor at the University of Leipzig,he ____.​

The point of sensitivity at which the least amount of change in a stimulus gives rise to a change in a sensation is a definition of ____.​

Fechner wrote satirical essays ridiculing medicine and science under the pen name ____.​

Whose major contributions to the new psychology involved the two-point threshold and the just noticeable difference?​

With regard to the speed of the nerve impulse,perhaps the most important conclusion of Helmholtz's research for psychology was the determination ____.​

While euphoric and suffering from delusions of grandeur,Fechner ____.​

Who devised a theory of color vision as well as conducted research on audition?

Who developed both the two-point threshold and the concept of the just noticeable difference?

According to Fechner,the effects of stimulus intensities are not but are to the amount of sensation that already exists.

Fechner's flash of insight about the mind-body connection was that there is a(n) ____ relationship between a mental sensation and a material stimulus.

As a form of occupational therapy,Fechner ____.

Fechner proposed two ways to measure the lowest level of a sensation.One was the point of stimulus intensity below which no sensation is reported and above which subjects do experience a sensation;the other was ____.

Weber's Law,the formulation of how much change in a stimulus is required for a subject to detect it,rests on the measurement of the ____.

The modern notion of subliminal perception rests on the idea that the threshold of perception or consciousness can be determined.The first experimental illustration of psychological threshold was demonstrated by ____.

What is the smallest detectable difference between two stimuli?

What was the ratio of a weight to its just noticeable difference weight when they were lifted? What was the ratio of a weight to its just noticeable difference weight when the weights were placed in the subject's hands?

Which of the following is true of Fechner?

Weber's experiments led to two important contributions: (a) further research and (b) the focus of attention of later physiologists and the new psychology on the development of ____.

Weber suggested that discrimination among sensations depended on ____.

Fechner's most important contribution to psychology was the ____.

After Fechner obtained the very important appointment of professor at the University of Leipzig,he ____.

The point of sensitivity at which the least amount of change in a stimulus gives rise to a change in a sensation is a definition of ____.

Fechner wrote satirical essays ridiculing medicine and science under the pen name ____.

Whose major contributions to the new psychology involved the two-point threshold and the just noticeable difference?

With regard to the speed of the nerve impulse,perhaps the most important conclusion of Helmholtz's research for psychology was the determination ____.

While euphoric and suffering from delusions of grandeur,Fechner ____.