PSY-exam 100% ACCURATE GRADE A+ GUARANTEED

Ch.4 ______ is the lowest intensity level of a stimulus that we can detect half of the time. an absolute threshold Ch.4 Which of the following theories takes into account the decision-making processes people use in detecting a stimulus? signal detection Ch.4 In signal detection theory, what does a correct rejection represent? not reporting a stimulus that is not there Ch.4 Using the classic method of ______, a person's threshold is assumed to be constant, but in ______, it is assumed that a person's threshold fluctuates. absolute threshold; signal detection Ch.4 The size of the just noticeable difference is a constant fraction of the intensity of the stimulus. This principle is also known as _________. Weber's law Ch.4 Malika has an unusually accurate sense of taste. While most people can taste the sweetness when there is at least one teaspoon of sugar in two gallons of water, Malika can taste the sweetness when there is only one half of a teaspoon of sugar. What do psychologists call this phenomenon? absolute threshold Ch.4 What is the typical absolute threshold for vision in humans? On a dark night, if a candle flame is about 30 miles away, a person will see the candle flame about half the time. Ch.4 You are working in a small group in the back of the classroom. Your instructor asks your group to talk more softly. You all speak more quietly, but your instructor comes back 30 seconds later and asks why you have not quieted down. Which of the following psychological concepts best explains why your instructor didn't realize that you were already speaking more quietly? difference threshold Ch.4 The difference threshold is defined as ________. the smallest amount of change between two stimuli that you can detect half the time Ch.4 The minimum amount of stimulation required to tell the difference between two stimuli is called the ________. difference threshold Ch.4 According to Weber's law, you are more likely to detect a difference in sound between ________. 2 and 4 decibels Ch.4 Julia is holding a basket of apples that weighs five pounds. Sammy keeps adding more apples to Julia's basket and asks her to tell him when she notices that the basket is heavier. Julia notices a difference when the basket's weight reaches six pounds. Now Julia is holding a basket of apples weighing ten pounds. According to Weber's law, how much additional weight in apples must be added for Julia to notice a difference? 2 pounds Ch.4 Based on what you have learned about Weber's law and just noticeable differences ________. it is easier to detect changes in stimulus intensity when the intensities are low Ch.4 Tammy wants to attend a concert of her favorite duo, Queen Tunius and the Jake-man. Unfortunately, she does not have a ticket. She has decided to sneak into the concert but is worried she might get caught because a security guard is sitting in the concert hall watching for trespassers. According to Weber's law, ________. Tammy should wait until most of the audience is in the concert hall before she sneaks in Ch.4 As the prosthetic detects stimulus information in the environment, the sensation is transmitted to the brain via ________. afferent nerves Ch.4 Igor Spetic is a patient who has used the new prosthetic. He says that with the prosthetic he is now able to feel textures such as cotton balls and sandpaper again. The ability of Igor's brain to tell the difference between textures is known as a(n) ________. perception Ch.4 Which of the following statements is TRUE? This new prosthetic arm provides more natural sensation than earlier devices Ch.4 Bottom-up processing ________. starts with recognizing the smaller pieces and builds up to the whole Ch.4 In perception, bottom-up processing focuses on ______, while top-down processing focuses on ______. what the stimulus is; the function or meaning of the stimulus Ch.4 You are looking at a painting in a museum. You perceive a house in the corner of the painting, although you cannot actually see the entire house because the edge of the frame is blocking part of the image. The fact that you know that what you are seeing is "a house," even though you can only see some parts of it, is due to ________. top-down processing Ch.4 ______ processing is when we use higher level thinking, experience, and expectations to help guide our perception of what is happening. Top-down Ch.4 Which one of the following examples demonstrates bottom-up processing? You viewed an ambiguous stimulus. Although you could not see the whole picture, you could still tell it was a dog. Ch.4 You are having fun joking around with the new boy in your school. There are some other students talking not too far away, but you don't even realize they are there until you hear one of them say your name. This is an example of ________. selective attention Ch.4 Attention is defined as ________. the limited capacity to process information under our conscious control Ch.4 You have been writing that dreaded term paper all night. It's 3am and you are very tired. You finally decide to quit and go to bed after you find yourself reading the same paragraph over and over. In this example, you have lost the ability to use which kind of attention? sustained attention Ch.4 Which of the following scenarios is the best example of multitasking? Fran is eating popcorn while watching a movie. Ch.4 Light enters the interior of the eye through the ________. pupil Ch.4 Which of the photoreceptors is responsible for color vision and is most functional in conditions of bright light? cones Ch.4 Humans are trichromatic. To what three colors are our eyes sensitive? red, green, and blue Ch.4 Meg had neurosurgery to remove a tumor. After the surgery, she could no longer see. Which of the following structures was most likely severed during the surgery? thalamus CONTINUED.....