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The process in which the lens adjusts its shape depending on the distance between the eye and the object viewed in order to project a clear image onto the retina is


A) accommodation.
B) focusing.
C) constriction.
D) dilation.

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Studies that examine the ability of individuals from various cultures to take advantage of pictorial depth cues present in two-dimensional drawings indicate that the application of pictorial depth cues


A) is a skill that develops in all cultures.
B) is an acquired skill that depends on experience.
C) is a skill that develops naturally in early infancy.
D) is a skill shown only by adults.

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Quiroga et al. (2005) found individual neurons that would respond to images of famous people. Based on Quiroga's findings, you would predict that a neuron which fires in response to an image of Halle Berry will NOT fire in response to


A) the words HALLE BERRY.
B) images of Halle Berry's character in one of her movie roles.
C) images of Chuck Berry.
D) images of Halle Berry in the company of other people.

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The fact that the corner of a building thrust toward the viewer looks shorter than an inside corner thrust away from the viewer can be accounted for by the


A) horizontal-vertical illusion.
B) Ponzo illusion.
C) Müller-Lyer illusion.
D) illusion of relative size.

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Shelby created an animated scene using her computer. She drew a frog as he started to jump, and then drew the frog landing. The computer created 24 pictures between these two points, which adjusted the frog's position very slightly. When the entire sequence of 26 pictures is displayed in rapid succession, the frog appears to hop smoothly. This perception of smooth action is one example of


A) preattentive processing.
B) the phi phenomenon.
C) bottom-up processing.
D) feature detection.

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Which of the following is the MOST general of the Gestalt principles describing how individual elements are grouped into higher-order figures?


A) continuity
B) proximity
C) similarity
D) simplicity

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Natalie sat on her porch looking out at the field of soybeans. The fact that Natalie perceived the soybean plants as being grouped into a series of separate rows is consistent with the Gestalt principle of


A) closure.
B) simplicity.
C) proximity.
D) similarity.

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A microelectrode is recording the activity from a single cell in the visual cortex of a cat. The cell begins to fire rapidly when a line is presented at a 45-degree angle directly in front of the cat, but stops firing when the line is shifted to a position that is off to the left. In this case, the microelectrode is MOST likely monitoring activity from


A) a simple cell.
B) a cell in the superior colliculus.
C) a complex cell.
D) a hypercomplex cell.

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In order to keep focusing on an object as it moves closer to your face, you must


A) rotate your eyes outward.
B) rotate your eyes inward.
C) look straight ahead.
D) focus at a point some distance beyond the approaching object.

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Joan was sitting talking with some friends when she suddenly left the room to check on her baby. She was sure she heard little Emily cry out, but when she checked, Emily was sleeping peacefully. Based on signal detection theory, the fact that Joan thought she detected a baby's cry would be considered


A) a false alarm.
B) a correct rejection.
C) a hit.
D) a miss.

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Which of the following statements is MOST accurate?


A) Although subliminal perception was once dismissed by scientists as preposterous, recent data have made the notion less implausible.
B) Scientists have conclusively demonstrated that perception simply cannot take place without conscious awareness.
C) Recent research suggests that subliminal messages can be quite persuasive in convincing us to buy products we don't want and promoting satanic rituals.
D) Subliminal perception is only possible if sensory adaptation has taken place.

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The Gestalt principle of proximity refers to the idea that


A) people tend to gravitate toward a common interaction distance.
B) center-surround cells that are closer fire more often.
C) perception occurs in discrete time frames.
D) objects nearer to each other are seen as forming a unit.

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An inference about which distal stimuli could be responsible for the proximal stimuli sensed is a


A) sensory hypothesis.
B) sensory constancy.
C) perceptual hypothesis.
D) perceptual constancy.

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Jacob has been working at his computer for the past 2 hours, and the hum that he found so annoying when he started no longer bothers him. The change in Jacob's sensitivity to the noise from the computer illustrates the process known as


A) perceptual invariance.
B) perceptual assimilation.
C) adjusting just noticeable differences.
D) sensory adaptation.

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The explanation of the Müller-Lyer illusion that relates the lines to inside- and outside-corners accounts for the observation that people from non-Western cultures


A) are more susceptible to the illusion than people from Western cultures.
B) are less susceptible to the illusion than people from Western cultures.
C) are equally susceptible to the illusion as people from Western cultures.
D) do not perceive any visual illusions the same way as people from Western cultures.

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The phenomenon of size constancy implies that


A) the perception of size is not related to the perception of distance.
B) the farther away an object is, the more we underestimate its true size.
C) two objects will be perceived as the same size whenever they produce the same size retinal image.
D) two objects may be perceived as being the same size even though they produce different size retinal images.

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The question regarding whether sensory stimuli that fall beneath the threshold of awareness still influence behavior is associated with the concept of


A) sensory adaptation.
B) subliminal adaptation.
C) sensory perception.
D) subliminal perception.

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The function of the middle ear is to


A) convert sound into neural energy.
B) amplify the sound.
C) collect and funnel the sound.
D) aid in maintenance of balance.

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Which of the following statements is not consistent with feature analysis?


A) at times, perception of form may involve bottom-up processing
B) at times, perception of form may involve top-down processing
C) feature detector cells in the visual cortex suggest that some aspects of form perception involve feature analysis
D) feature analysis starts with individual components of a form and then combines the components into more complex forms

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Sonja put on a new watch this morning and found it uncomfortable because it was so much heavier than her old watch. However, at noon, when a friend asks her if she knows what time it is, Sonja finds she has forgotten she is even wearing the watch. The change in Sonja's sensitivity to the pressure of the watch illustrates the process known as


A) sensory adaptation.
B) perceptual invariance.
C) perceptual assimilation.
D) adjusting just noticeable differences.

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