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distance cues, which make the horizon Moon seem farther away.

When the Moon is near the horizon, it appears larger than when it is high in the sky. This effect is primarily a result of

below one's absolute threshold for conscious awareness.

A subliminal message is one that is presented

lack of a reproducible ESP phenomenon.

The greatest difficulty facing contemporary parapsychology is the


Damage to a region of the brain essential to recognizing faces results in a condition known as

extrasensory transmission of thoughts from one mind to another.

Telepathy refers to the

difference thresholds.

difference thresholds.

difference thresholds.

Experiments with the visual cliff suggest that

organize stimuli into coherent groups.

The Gestalt principles of proximity and similarity refer to ways in which we

perceptual constancy.

Perceiving objects as unchanging even as illumination and retinal images change is known as

objects are perceived to have consistent lightness even if the amount of light they reflect changes.

Lightness constancy refers to the fact that

an object's perceived color is influenced by its surrounding objects.

The phenomenon of color constancy best demonstrates that

relative height

Which of the following distance cues most likely contributes to the perception that the height of the St. Louis Gateway Arch is greater than its width?

50 percent of the time.

The absolute threshold is the minimum amount of stimulation that a person needs to detect a stimulus


The process by which we organize and interpret sensory information in order to recognize meaningful objects and events is called

physical stimuli and psychological experience.

Psychophysics is best defined as the study of relationships between

study of phenomena such as ESP and psychokinesis.

Parapsychology refers to the

large because we perceive it as unusually far away from ourselves.

The Moon just above the horizon typically appears to be unusually


The process of receiving and representing stimulus energies by the nervous system is called

linear perspective.

The seeming convergence of parallel lines provides the distance cue known as

depth perception.

The organization of two-dimensional retinal images into three-dimensional perceptions is called

diminishing sensitivity to an unchanging stimulus.

Sensory adaptation refers to

sensory adaptation.

Diminished sensitivity to an unchanging stimulus is known as

perceptual constancy.

Perceiving objects as having consistent shape, size, and color regardless of the angle, distance, and lighting conditions from which we view them is known as

group stimuli into smooth, uninterrupted patterns.

The principle of continuity refers to the perceptual tendency to

organized whole.

A gestalt is best described as a(n)


Jamal claims that his special psychic powers enable him to perceive exactly where the body of a recent murder victim is secretly buried. Jamal is claiming to possess the power of

shape constancy.

Although college textbooks frequently cast a trapezoidal image on the retina, students typically perceive the books as rectangular objects. This illustrates the importance of


Farouk insists that by intense mental concentration he can actually influence the mechanically generated outcomes of slot machines. Farouk is most specifically claiming to possess the power of

top-down processing.

Heather Sellers suffers from prosopagnosia and is unable to recognize her own face in a photograph. Her difficulty stems from a deficiency in

linear perspective.

The apparent narrowing of a river as it flows directly away from you into the distance best illustrates the depth cue known as

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