Units 2 3 4 Vocab Test. Flashcards
Placebo Effect
when a person’s physical or mental health appears to improve after taking a fake treatment
Just-Noticeable Difference
(difference threshold)
the smallest amount of change needed in a stimulus before we detect a change
Weber’s Law
the change needed for just-noticeable difference is proportional to the original intensity of the stimulus
Top-Down Processing
using experience to perceive an object
Schemata
(schema)
mental representations of how we expect the world to be
Perceptual Set
predisposition to perceiving something in a certain way
Bottom-Up Processing
(feature analysis)
use the features to to build a complete perception
Figure-Ground Relationship
what part of a visual image is the figure and what part is the background
Gestalt Psychology
we normally perceive images as groups, and not as isolated elements
Proximity
Objects that are close together are more likely to be grouped
Similarity
Objects that are similar in appearance are more likely to be grouped
Continuity
Objects that are arranged in a continuous line or curve are more likely to be grouped
Closure
Objects that make up a recognizable image are more likely to be grouped, even with gaps
Monocular Depth Cues
depth cues that do not depend on having two eyes
Binocular Depth Cues
depth cues that depend on having two eyes
Linear Perspective
parallel lines appear to converge in the distance
Relative Size Cue
larger = closer
smaller = further
Interposition Cue
objects that block other object are closer
Texture Gradient
we see texture details up close, but not far away
Retinal Disparity
(binocular disparity)
each of our eyes view an object from a slightly different angle
Convergence
as an object moves closer to our face, our eyes move toward each other to keep focused on the object
Nature
genetic factors
Nurture
environmental factors
Teratogens
chemicals or agents that cause harm to baby if ingested by mother during pregnancy, can pass through protective placenta barrier