Question 1

As you focus on your cell phone conversation while driving, you miss the road sign where you needed to make a turn and drive 20 miles out of the way. This is an example of

Accepted Answer

This is an example of inattentional blindness, which occurs when an individual fails to perceive an unexpected stimulus that is in plain sight, due to attention being engaged on another task or aspect of the environment, in this case, the cell phone conversation.

Question 2

Although the senses reduce a mixture of sights, sounds, odors, tastes, and touch sensations to more manageable amounts, they are still too much for the brain to handle. That's why the brain further filters sensory information through

Accepted Answer

Selective attention is the process by which the brain filters sensory information, focusing on what is deemed important or relevant and ignoring other stimuli. This helps manage the overwhelming amount of sensory input we receive.

Question 3

When you are in a group of people, surrounded by voices, you can choose to focus on the voice of the person you are facing or even choose to eavesdrop on conversations around the room. This is known as

Accepted Answer

The "cocktail party effect" refers to the ability of individuals to focus their auditory attention on a particular stimulus while filtering out a range of other stimuli, as when a person can focus on a single conversation in a noisy environment.

Question 4

Which of the following can be thought of as a "bottleneck," or a narrowing in the information channel linking the senses to perception, that is, when one message enters the bottleneck, it seems to prevent others from passing through?

Accepted Answer

Selective attention acts as a bottleneck in the information channel linking the senses to perception by focusing on one message and filtering out others, thus preventing them from passing through.

Question 5

Regarding inattentional blindness, we are more likely not to perceive something when

Accepted Answer

Inattentional blindness occurs when an individual fails to perceive an unexpected stimulus that is in plain sight, due to the focus of their attention on another task, event, or object. This phenomenon is more likely to happen when our attention is narrowly focused on a specific aspect, making us oblivious to other potential stimuli in our environment.

Question 6

When you are in a group of people, surrounded by voices, you can choose to focus on the voice of the person you are facing or even choose to eavesdrop on conversations around the room. This is a good example of

Accepted Answer

Selective attention is the process by which a person can focus on one particular stimulus while ignoring others, as exemplified by focusing on a single conversation in a noisy environment.

Question 7

Simons and Chabris showed participants a film of two basketball teams, one wearing black shirts and the other wearing white. Observers were asked to watch the film closely and count how many times a basketball passed between members of one of the teams, while ignoring the other team. As the observers watched and counted, a person wearing a gorilla suit walked into the middle of the basketball game, faced the camera, thumped its chest, and walked out of view. Which of the following occurred?

Accepted Answer

Half of the participants failed to notice the gorilla's appearance, demonstrating the phenomenon of inattentional blindness, where an unexpected object is not seen because attention is focused elsewhere.

Question 8

After a musical concert that you enjoyed without distraction, a companion complains that she heard little of the music due to frequent shuffling and throat-clearing in the audience. The difference in your experience and hers is related to

Accepted Answer

Selective attention explains the difference in experiences because it refers to focusing on a particular object in the environment for a certain period of time while ignoring others. You were able to focus on the music, ignoring the background noise, while your companion was distracted by the audience noises.

Question 9

As you sit reading this page, receptors for touch and pressure in the seat of your pants are sending nerve impulses to your brain. Although these sensations have been present all along, you were probably not aware of them until just now. This "seat-of-the-pants phenomenon" is an example of

Accepted Answer

Selective attention explains why you were not aware of the sensations until they were pointed out; your brain was focusing on other stimuli, ignoring the constant pressure and touch sensations until attention was directed towards them.

Question 10

Which of the following processes can be consciously controlled?

Accepted Answer

Selective attention is a process that can be consciously controlled, allowing individuals to focus on specific stimuli while ignoring others.

Question 11

You are conducting an experiment in which participants are asked to focus intensely on the black star in the center of the screen. A small blue triangle is flashed for a moment in the right top corner. The failure of some of the participants to see the small blue triangle on the screen illustrates

Accepted Answer

Inattentional blindness occurs when an individual fails to perceive an unexpected stimulus that is in plain sight, due to the intense focus on another task or aspect of their environment. In this scenario, participants are so focused on the black star that they fail to notice the blue triangle, illustrating inattentional blindness.

Question 12

Failure to perceive a stimulus that is in plain view but not the focus of attention is known as

Accepted Answer

Inattentional blindness occurs when an individual fails to perceive an unexpected stimulus that is in plain sight, simply because their attention is focused on another task, event, or aspect of their environment.

Question 13

The ability to selectively attend to incoming sensory information is believed to result from

Accepted Answer

The brain's ability to prioritize certain sensory messages over others allows it to selectively focus on specific stimuli, effectively managing the vast amount of information it receives at any given time. This selective attention mechanism ensures that the most relevant information is processed preferentially.

Question 14

A researcher presents a blindfolded subject with a sweet liquid and then adds a drop of sweetener to the liquid and has the subject taste it. This process continues until the subject tells the researcher that the liquid tastes "sweeter." Regarding the sense of taste, this researcher is seeking the __________ threshold.

Accepted Answer

The researcher is seeking the "difference" threshold, which refers to the minimum difference in stimulation that a person can detect 50% of the time. In this case, it's the smallest change in sweetness level that the subject can perceive.

Question 15

Voluntarily placing priorities on sensory messages refers to the process of

Accepted Answer

Selective attention is the process by which individuals focus on one particular piece of information from the environment while ignoring other stimuli. This allows us to prioritize sensory information based on what we deem most important at any given time.

Question 16

Being able to focus on the traffic signals among all the neon signs and lights illustrates

Accepted Answer

Selective attention allows an individual to focus on specific stimuli, like traffic signals, in a busy visual environment, ignoring irrelevant stimuli such as neon signs and lights.

Question 17

Which of the following appears to be based on the ability of brain structures to choose and divert incoming sensory messages?

Accepted Answer

Selective attention is the process by which the brain chooses and diverts incoming sensory messages, focusing on certain stimuli while ignoring others.

Question 18

The "seat of your pants phenomenon" and the "cocktail party effect" refer to

Accepted Answer

The "seat of your pants phenomenon" refers to the ability to sense things without necessarily being consciously aware of them, often related to proprioception or the sense of body position and movement, which involves selective attention to specific sensory inputs. The "cocktail party effect" is the ability to focus one's auditory attention on a particular stimulus while filtering out a range of other stimuli, as when a person can focus on a single conversation in a noisy environment. This also involves selective attention and the voluntary focusing on a specific sensory input.

Question 19

You are about to take your psychology test when in the next room a nature video is being shown to another class. You focus intensely on reading and answering the test questions. When you look up a few minutes later, you realize that the video has stopped, and you hadn't even noticed. This situation illustrates your

Accepted Answer

Selective attention explains this situation because it involves focusing on a specific aspect of experience while ignoring others, such as concentrating on a test and not noticing the video stopping.

Question 20

You are at a party and are listening intensely to a friend tell the "latest gossip," when another person in the room mentions your name in a conversation in a group to the left of where you are standing. According to research on selective attention, you will most likely

Accepted Answer

The phenomenon where you suddenly shift your attention to a conversation where your name is mentioned, even when you are focused on another conversation, is known as the cocktail party effect. This demonstrates our ability to selectively attend to stimuli that are personally relevant amidst a sea of distractions.

Quiz 4: Sensation and Perception