Question 1

The minimum amount of change required for a person to detect a difference between two stimuli is referred to as the

Accepted Answer

The minimum amount of change that a person can detect between two stimuli is referred to as the difference threshold or just noticeable difference (JND). Therefore, choice D, difference threshold, is the correct answer. The other options are not correct: Transduction refers to the process by which sensory organs convert physical energy from the environment into neural signals, signal detection refers to the ability to detect a stimulus amidst noise or irrelevant information, and the absolute threshold refers to the smallest amount of stimulus energy required for a person to detect that stimulus at least 50% of the time.

Question 2

During transduction,most sensory information is transmitted first to the __________ before it is sent to the__________,where it is interpreted as sight,sound,smell,touch,or taste.

Accepted Answer

The thalamus acts as a relay station for sensory information, receiving signals from sensory organs and transmitting them to the appropriate area of the cortex for interpretation. Therefore, sensory information is transmitted first to the thalamus before being sent to the cortex for interpretation.

Question 3

Anna is reading her psychology textbook.The light reflects off the words on the page and falls on the sensory receptors in her retina,which results in __________.Then her brain interprets the stimuli as particular words,which is called __________.

Accepted Answer

The first blank refers to the process of sensation, which is the detection of external stimuli (in this case, light reflecting off the words) by sensory receptors in the body (in this case, the retina). The second blank refers to perception, which is the process by which the brain organizes and interprets sensory information to form meaningful experiences (in this case, interpreting the stimuli as particular words). Therefore, the correct answer is B, sensation and perception.

Question 4

When Petra jumps into a cold lake,she feels as though she is freezing.After a few minutes,she no longer notices the cold and feels comfortable in the water.This change is best explained by

Accepted Answer

Sensory adaptation is the process by which our sensory receptors and nervous system respond to constant stimuli by becoming less sensitive to them. In the case of Petra, her sensory receptors and nervous system adapt to the cold water, causing her to no longer notice the cold and feel comfortable in the water.

Question 5

The sense organs' detection of external physical stimuli is called __________,whereas further processing,organizing,and interpreting of those stimuli in the brain is called __________.

Accepted Answer

Sensation refers to the initial detection of physical stimuli by the sense organs, whereas perception involves further processing, organizing, and interpreting of those stimuli in the brain. Transduction is the process by which physical stimuli are converted into neural signals.

Question 6

Taj wants to create a robot that has sensation but not perception.The robot should

Accepted Answer

Sensation refers to the detection of physical energy emitted by stimuli, while perception refers to the interpretation of that detected information. Therefore, a robot with sensation but not perception would be able to detect external physical energy, such as light or sound, but would not be able to interpret or understand it. Option B is the best choice as it specifically mentions detecting external physical energy without interpretation, while the other options either involve understanding or memory.

Question 7

Which of the following explains that the greater the size of a chocolate bar,the more of it you will need to slice off before a customer notices that it is smaller?

Accepted Answer

Weber's law states that the more intense a stimulus is, the more it needs to change before it is noticeably different. In this case, the size of the chocolate bar is the stimulus and the amount that needs to be sliced off before it is noticed is the noticeable difference. Since larger chocolate bars have a greater starting size, they require a larger noticeable difference before a customer will perceive that they are smaller.

Question 8

According to signal detection theory,if Daniel incorrectly "detected" a stimulus that was not presented in a trial,he would be making a

Accepted Answer

According to signal detection theory, a false alarm occurs when a participant reports detecting a stimulus that was not actually presented. Thus, if Daniel incorrectly "detected" a stimulus that was not presented in a trial, he would be making a false alarm.

Question 9

The area where the optic nerve leaves the retina is referred to as the

Accepted Answer

The area where the optic nerve leaves the retina is known as the blind spot because it contains no photoreceptors, therefore light that falls on this area cannot be detected.

Question 10

With regard to sensation,signal detection theory accounts for a person's

Accepted Answer

Signal detection theory explains how people make judgments about whether a stimulus is present or absent in the environment, based on their sensitivity to the stimulus and their willingness to accept false alarms or miss detections. Therefore, it is related to the sensation aspect of perception.

Question 11

Mary's brain can't directly process sound waves to hear what her boyfriend is saying.Instead,her sensory receptors detect sound waves and change them into signals that her brain interprets as meaning "I love you," in a process called

Accepted Answer

Transduction is the process by which sensory receptors convert stimuli (such as sound waves) into neural signals that can be interpreted by the brain. Mary's sensory receptors are able to detect the sound waves, but her brain cannot process them directly without the signals being transduced first.

Question 12

Weber's law suggests that the size of a just-noticeable difference depends on the

Accepted Answer

Weber's law suggests that the size of a just-noticeable difference (JND) is proportional to the size of the initial stimulus. In other words, the larger the initial stimulus, the larger the JND must be in order for a person to detect a difference. This principle applies to all sensory modalities.

Question 13

Jasmine wants to get Uchenna's attention in the library.She whispers to avoid disturbing other students.However,she speaks so softly that Uchenna cannot hear.Jasmine's voice is

Accepted Answer

Jasmine's voice is too soft for Uchenna to detect, meaning it is below his absolute threshold. The absolute threshold is the minimum level of stimulation needed for a person to detect a particular stimulus 50% of the time, and Jasmine's voice falls below that threshold.

Question 14

For which of the following pairs would it be easiest to detect a difference in weight?

Accepted Answer

The difference in weight between a 1-pound bag of sugar and a 2-pound bag of sugar is 100%, which is significantly larger in relative terms compared to the other options, making it the easiest to detect.

Question 15

Jason is participating in a psychology experiment in which he is seated in a completely dark room.An initially undetected point of light is gradually made brighter.With each increase,he is asked if he can see the light.In this experiment,Jason's __________ is being measured.

Accepted Answer

The experiment is measuring Jason's absolute threshold, which is the minimum amount of stimulation needed for him to detect the light. The difference threshold is the minimum difference between two stimuli that he can detect, the just-noticeable difference is another term for the difference threshold, and transduction refers to the process by which sensory information is converted into neural signals.

Question 16

Kendra loves spicy curry,but her husband prefers a mild curry.Starting with a mild curry,Kendra increases the spiciness every time she cooks.One day her husband complains that the curry is too spicy.After that,Kendra always makes the curry as spicy as the last time before her husband complained.With this exercise,Kendra assessed her husband's

Accepted Answer

Kendra is increasing the spiciness of the curry until her husband can perceive a difference and complains. This means she is testing his difference threshold, which is the smallest amount of change in stimulation (in this case, spiciness) needed for a person to perceive a difference. Once she hits that threshold, she stops increasing the spice level, indicating that she has found his limit.

Question 17

After transduction,the neural signals of vision,hearing,taste,and touch all pass through the

Accepted Answer

The thalamus is responsible for relaying sensory information (including vision, hearing, taste, and touch) to the appropriate areas of the brain for further processing. The hypothalamus is involved in regulating basic bodily functions such as hunger and thirst, the hippocampus is responsible for long-term memory storage and retrieval, and the amygdala is involved in the processing of emotions and the formation of memories associated with emotional experiences.

Question 18

When sensory receptors change physical stimuli into signals that the brain can process,this is called

Accepted Answer

Sensory receptors change physical stimuli into neural signals through a process called transduction. Sensation refers to the process of detecting physical stimuli, whereas sensory adaptation refers to the decreasing sensitivity to a constant stimulus over time. Absolute threshold refers to the minimum amount of stimuli needed to detect a sensory experience.

Question 19

The minimum intensity of sensory stimulation required before a sensation is detected 50 percent of the time is called

Accepted Answer

Absolute threshold refers to the minimum level of sensory stimulation required to detect a sensation 50% of the time. Signal detection refers to the ability to discern between a sensory signal and background noise. Difference threshold is the minimum difference between two stimuli required for a person to detect a difference. Sensory adaptation refers to the decreased sensitivity to a constant or repetitive stimulus over time.

Question 20

Prashanth is participating in a psychology experiment in which he is asked to gradually shrink the image of a square on his computer screen until he can just barely see that it is smaller than a second square on the screen.Prashanth is trying to create a

Accepted Answer

Prashanth is trying to determine the smallest difference in size that he can perceive between two squares, which is known as the just-noticeable difference (JND).

Quiz 5: Sensation and Perception