Question 1

The term psychophysics refers to

Accepted Answer

Psychophysics is the study of the relationship between physical stimuli and the subjective psychological experiences they produce. This involves studying the properties of stimuli such as intensity, duration, and frequency, and how these properties are perceived by individuals. The aim is to understand how physical phenomena are translated into psychological experience. Therefore, choice D is the best answer.

Question 2

Thresholds are typically defined operationally as

Accepted Answer

Thresholds are typically defined operationally as that minimal or maximal (for upper thresholds) stimulus intensity that is detected 50% of the time. This means that at this intensity level, a participant detects the stimulus half of the time and misses it the other half of the time. This is a commonly used definition in psychophysics and threshold measurement procedures.

Question 3

A difference threshold is defined as

Accepted Answer

A

Question 4

The formal beginnings of psychophysics are found in the work of

Accepted Answer

Psychophysics as a scientific discipline originated from the experimental and theoretical work of Ernst Heinrich Weber and Gustav Theodor Fechner. Weber's law and Fechner's law are the founding principles of psychophysics. While Wundt, Lotze, and Helmholtz contributed to the development of psychology, they did not play key roles in the formal beginnings of psychophysics.

Question 5

_____ systematically mapped the cutaneous sensitivity of the human body.

Accepted Answer

Ernst Heinrich Weber systematically mapped the cutaneous sensitivity of the human body.

Question 6

The just noticeable difference (difference threshold) is a constant mathematical function of the existing amount
Of stimulation. In its most basic form, this was first proposed by

Accepted Answer

The concept of just noticeable difference was first proposed by Ernst Heinrich Weber, who formulated Weber's Law that states that the just noticeable difference is a constant proportion of the original stimulus intensity.

Question 7

Fechner's night view of life is found in ________ whereas his day view of life is found in ________.

Accepted Answer

Fechner's night view of life is associated with panpsychism, which suggests that everything has a consciousness or soul, contrasting with his day view, which is more aligned with extreme materialistic positions, focusing on the physical and observable aspects of life.

Question 8

Fechner used the pseudonym "Dr. Mises" to support

Accepted Answer

Fechner used the pseudonym "Dr. Mises" to support panpsychism, the belief that consciousness is a fundamental aspect of the universe and exists in all things, not just in organisms with nervous systems.

Question 9

Elements of Psychophysics, a classic in psychology, was written by

Accepted Answer

Elements of Psychophysics was written by Gustav Theodor Fechner.

Question 10

You now employ a method in which comparison stimuli are simply presented with a standard stimulus in a
Random fashion and the subjects task is simply to report whether the comparison stimulus is equal to, greater
Than, or weaker than the standard. You are now using the method of

Accepted Answer

The method described is the constant stimuli method, in which various comparison stimuli are presented randomly with a standard stimulus. The subject must then indicate whether the comparison stimulus is stronger, weaker or equal to the standard. This method is often used to obtain more precise psychophysical measurements, as it allows for a greater range of stimulus intensities to be presented and for greater control over the stimuli used.

Question 11

You wish to measure brightness discrimination. Your subject views a standard light source and attempts to
Match the standard by turning a knob that controls the brightness of a comparison stimulus. You use an
Ascending and descending series. You are using the method of

Accepted Answer

The answer of You wish to measure brightness discrimination. Your...

Question 12

The first textbook claiming to be about physiological psychology was written by a German scholar who was
Also known for an approach to depth perception that involved a theory of local signs. He was

Accepted Answer

Rudolph Hermann Lotze was the German scholar who wrote the first textbook claiming to be about physiological psychology. He was also known for his approach to depth perception that involved a theory of local signs.

Question 13

The vision of _______ regarding the unity of the sciences was so great that he hardly knew when he was doing
Psychology, physiology or physics. He believed there were no mysterious forces or unknowable energies that
Activate the organism.

Accepted Answer

The reference to the unity of the sciences and the rejection of mysterious forces or energies points to the work and beliefs of Herman von Helmholtz.

Question 14

The ophthalmoscope, invented by ______ made it possible to gain visual access to the retina of the eye.

Accepted Answer

Hermann von Helmholtz is credited with inventing the ophthalmoscope in 1851, allowing physicians to see inside the eye and examine the optic nerve and retina.

Question 15

_____ possessed an intense interest in vision research, particularly in the areas of color vision, depth
Perception, and the physical structure of the eye.

Accepted Answer

While all of the listed individuals contributed to psychology and perception research in their own right, Hermann von Helmholtz is best known for his work in vision research and specifically the areas of color vision, depth perception, and the physical structure of the eye.

Question 16

Helmholtz's explanation of depth perception was based largely on

Accepted Answer

Helmholtz's explanation of depth perception emphasized the role of learned experiences and associations between visual and kinesthetic cues. He proposed that depth perception is not purely innate but develops through "unconscious inferences" based on empirical experiences, making his approach largely empirical.

Question 17

Helmholtz explained depth perception in terms of monocular cues and binocular cues. To more adequately
Study binocular cues for depth perception, he invented the

Accepted Answer

Helmholtz invented the stereoscope to study binocular cues for depth perception.

Question 18

The trichromatic theory of color vision grew largely out of the work of

Accepted Answer

The trichromatic theory of color vision was primarily developed by Thomas Young and Hermann von Helmholtz, with contributions from James Clerk Maxwell.

Question 19

The formal beginnings of experimental psychology are generally traced to the year _____ when _______.

Accepted Answer

The formal beginnings of experimental psychology are generally traced to the year 1879 when Wundt established a laboratory at Leipzig.

Question 20

Wundt's broad interests were evident in his 10-volume work

Accepted Answer

Wundt's 10-volume work is titled "Völkerpsychologie" which translates to "folk psychology" or "psychology of the people" and covers a wide range of topics including culture, language, morality, myth, and religion.

Quiz 10: Psychophysics and the Formal Founding of Psychology

The term psychophysics refers to

Thresholds are typically defined operationally as

A difference threshold is defined as

The formal beginnings of psychophysics are found in the work of

_____ systematically mapped the cutaneous sensitivity of the human body.

The just noticeable difference (difference threshold) is a constant mathematical function of the existing amount Of stimulation. In its most basic form, this was first proposed by

Fechner's night view of life is found in whereas his day view of life is found in .

Fechner used the pseudonym "Dr. Mises" to support

Elements of Psychophysics, a classic in psychology, was written by

You now employ a method in which comparison stimuli are simply presented with a standard stimulus in a Random fashion and the subjects task is simply to report whether the comparison stimulus is equal to, greater Than, or weaker than the standard. You are now using the method of

You wish to measure brightness discrimination. Your subject views a standard light source and attempts to Match the standard by turning a knob that controls the brightness of a comparison stimulus. You use an Ascending and descending series. You are using the method of

The first textbook claiming to be about physiological psychology was written by a German scholar who was Also known for an approach to depth perception that involved a theory of local signs. He was

The vision of _______ regarding the unity of the sciences was so great that he hardly knew when he was doing Psychology, physiology or physics. He believed there were no mysterious forces or unknowable energies that Activate the organism.

The ophthalmoscope, invented by ______ made it possible to gain visual access to the retina of the eye.

_____ possessed an intense interest in vision research, particularly in the areas of color vision, depth Perception, and the physical structure of the eye.

Helmholtz's explanation of depth perception was based largely on

Helmholtz explained depth perception in terms of monocular cues and binocular cues. To more adequately Study binocular cues for depth perception, he invented the

The trichromatic theory of color vision grew largely out of the work of

The formal beginnings of experimental psychology are generally traced to the year _ when ___.

Wundt's broad interests were evident in his 10-volume work