Question 1

The minimum intensity of physical stimulation required to produce any sensations at all in a person is the ____________.

Accepted Answer

The absolute threshold is the minimum intensity required for a person to detect a stimulus. It is the point at which a stimulus is detected 50% of the time.

Question 2

The smallest change in stimulation that can be detected 50 percent of the time is called the __________.

Accepted Answer

The difference threshold, also known as the just noticeable difference, is the smallest change in stimulation that can be detected 50 percent of the time. It is a critical concept in psychophysics and is used to study sensory abilities and the limits of perception. The other options are not correct as the response threshold refers to the minimum level of stimulation necessary for a person to detect a stimulus, the absolute threshold is the minimum intensity of stimulation that must be present for a person to detect it, and the separation threshold is not a commonly used term in psychology.

Question 3

The depressed spot in the retina which occupies the center of the visual field in which images are focused MOST sharply is called the:

Accepted Answer

The depressed spot in the retina which occupies the center of the visual field in which images are focused MOST sharply is called the fovea.

Question 4

The components in the sense organs that respond to energy are called _______.

Accepted Answer

The term "receptor" specifically refers to the component of a sense organ that responds to stimuli, making option B the correct answer. Option A, "sensor cells," is not specific enough to sense organs and could refer to any type of cell involved in sensing. Option C, "transducers," is a general term for any device that converts one form of energy to another and does not solely apply to sense organs. Option D, "effector cells," are responsible for the physiological response to a sensing stimulus and do not play a direct role in sensing.

Question 5

Dr.Delmar wants to determine how loud a certain noise must be in order for it to be heard from a distance of 50 feet.Her question involves the concept of:

Accepted Answer

The concept of absolute threshold is the minimum amount of stimulation needed for a stimulus to be detected, and in this case, Dr. Delmar wants to determine the minimum loudness needed for the noise to be heard from 50 feet away.

Question 6

Sensation is _______.

Accepted Answer

Sensation refers to the process of detecting and encoding sensory information from the environment through the stimulation of the senses. This includes all the sensory modalities such as vision, hearing, touch, taste, and smell.

Question 7

The point at which a person can detect a stimulus 50 percent of the time it is presented is called the __________.

Accepted Answer

This is the definition of the absolute threshold, which is the minimum amount of stimulus energy necessary for a person to detect a stimulus 50 percent of the time. The difference threshold is the minimum amount of difference between two stimuli that a person can detect, and the terms "range threshold" and "noticeable threshold" are not commonly used in psychology.

Question 8

Weber's Law states that a just noticeable change in a stimulus magnitude is ________ the original stimulus magnitude.

Accepted Answer

Weber's Law states that a just noticeable change (JNC) in a stimulus is proportional to the original stimulus magnitude. In other words, the JNC will be larger for larger stimuli and smaller for smaller stimuli. For example, if the original stimulus is a 10-pound weight, the JNC would need to be more than 1 pound to be noticeable. If the original stimulus is a 1-pound weight, the JNC would need to be less than 0.1 pounds to be noticeable.

Question 9

Which of the following is NOT a measure of threshold?

Accepted Answer

Absolute threshold, difference threshold (also known as the just noticeable difference threshold), and separation threshold are all measures of threshold, but separation threshold is not a commonly used term in psychology and may not be recognized by all researchers in the field.

Question 10

Detecting "environmental stimulation" is one way to define ______.

Accepted Answer

Sensation refers to the process of detecting and converting environmental stimuli, such as light or sound waves, into neural signals that are sent to the brain for processing. Perception involves interpreting and making sense of these signals, while feeling and awareness are broader concepts that encompass a range of conscious experiences.

Question 11

Professor Zander wants to know how loud a certain noise must be in order to be heard from a distance of 50 feet.This question involves the concept of _______.

Accepted Answer

The concept of absolute threshold refers to the minimum intensity of a stimulus that can be detected by a person's senses. In this case, Professor Zander is trying to determine the minimum loudness of a noise that can be heard from a distance of 50 feet, which is an example of absolute threshold.

Question 12

When Ann went to her doctor,he gave her a hearing test.During the test,the doctor presented tones to Ann through earphones.The tones varied only along the loud-soft dimensions (from very loud to very soft).The doctor asked Ann to raise her hand whenever she heard a sound.The doctor was testing Ann's _______.

Accepted Answer

The doctor was testing Ann's absolute threshold, which is the minimum intensity needed to detect a particular stimulus (in this case, the tone presented through earphones). The other options are not relevant to this type of hearing test. Auditory convergence refers to the merging of multiple sound sources into a single perception, refractory threshold refers to the amount of time needed for a sensory receptor to recover before it can respond to a stimulus again, and difference threshold refers to the minimum difference in intensity between two stimuli that can be detected as a difference (also known as the just noticeable difference).

Question 13

When Ann went to her doctor,he gave her a hearing test.During the test,the doctor struck several tuning forks,each of which vibrated at a distinct pitch,and asked her to choose two tones that sounded almost the same in pitch.The doctor was testing Ann's __________.

Accepted Answer

The doctor was testing Ann's difference threshold, which is the smallest difference between two stimuli that is detectable 50% of the time. In this case, Ann was asked to identify two tones that sounded almost the same in pitch, so the doctor was measuring the smallest difference in pitch that Ann could detect. Auditory convergence refers to the process by which multiple auditory signals are combined into a single perception, refractory threshold refers to the minimum amount of time that must pass between two stimuli for them to be perceived as separate, and absolute threshold refers to the minimum amount of sensory stimulation needed for a person to detect a stimulus 50% of the time. None of these concepts are directly related to the test that Ann was given.

Question 14

The term "just noticeable difference" is loosely synonymous with __________.

Accepted Answer

"Just noticeable difference" (JND) is a term used to describe the smallest difference between two stimuli that can be detected by an observer. Another name for JND is "difference threshold". Separation threshold and response threshold are not synonymous with JND, and while absolute threshold is related to the concept of JND, it refers to the lowest level of stimulus intensity at which a person can detect a stimulus at least 50% of the time.

Question 15

Which of the following is NOT a measure of threshold?

Accepted Answer

Absolute threshold, difference threshold, and just noticeable difference are all measures of threshold in sensory systems. Separation threshold is not a recognized measure of threshold.

Question 16

The purity,richness,or vividness of a hue is known as its __________.

Accepted Answer

Saturation refers to the intensity or purity of a hue, meaning how much gray is mixed in with the color. Brightness refers to how light or dark a color is, while depth can refer to the darkness or richness of a color. Additive mix is not relevant to the definition of a hue.

Question 17

The process whereby we receive information from the environment through our receptors is _______.

Accepted Answer

Sensation refers to the process of receiving information from the environment through our sensory receptors. Encoding involves converting that information into a form that can be processed and stored by the brain. Perception refers to the interpretation of that information, which is influenced by our past experiences and expectations. Transduction refers specifically to the conversion of sensory input into neural signals that can be transmitted to the brain. Sensation is therefore the best choice for the given question.

Question 18

The wavelength of the light to reach your eyes determines what __________ you see.

Accepted Answer

The wavelength of light determines the color or hue that is perceived by the eyes.

Question 19

Which of the following statements is true?

Accepted Answer

The absolute threshold and the difference threshold both vary from person to person and can also vary over time for any given person. The absolute threshold is affected by factors such as fatigue, attention, and expectations, while the difference threshold is affected by factors such as the stimulus intensity and the sensory modality. Therefore, both thresholds can vary among individuals and in different situations.

Question 20

If a researcher wanted to know how loudly a person must speak in order to be heard above the noise of two other simultaneous conversations,the researcher would likely measure the ________ .

Accepted Answer

The answer of If a researcher wanted to know how...

Quiz 3: Sensation and Perception

The minimum intensity of physical stimulation required to produce any sensations at all in a person is the ____________.

The smallest change in stimulation that can be detected 50 percent of the time is called the __________.

The depressed spot in the retina which occupies the center of the visual field in which images are focused MOST sharply is called the:

The components in the sense organs that respond to energy are called _______.

Dr.Delmar wants to determine how loud a certain noise must be in order for it to be heard from a distance of 50 feet.Her question involves the concept of:

Sensation is _______.

The point at which a person can detect a stimulus 50 percent of the time it is presented is called the __________.

Weber's Law states that a just noticeable change in a stimulus magnitude is ________ the original stimulus magnitude.

Which of the following is NOT a measure of threshold?

Detecting "environmental stimulation" is one way to define ______.

Professor Zander wants to know how loud a certain noise must be in order to be heard from a distance of 50 feet.This question involves the concept of _______.

When Ann went to her doctor,he gave her a hearing test.During the test,the doctor struck several tuning forks,each of which vibrated at a distinct pitch,and asked her to choose two tones that sounded almost the same in pitch.The doctor was testing Ann's __________.

The term "just noticeable difference" is loosely synonymous with __________.

Which of the following is NOT a measure of threshold?

The purity,richness,or vividness of a hue is known as its __________.

The process whereby we receive information from the environment through our receptors is _______.

The wavelength of the light to reach your eyes determines what __________ you see.

Which of the following statements is true?

If a researcher wanted to know how loudly a person must speak in order to be heard above the noise of two other simultaneous conversations,the researcher would likely measure the ________ .