AND PERCEPTION CERTIFICATION EXAMINATION|
COMPREHENSIVE Q&A
● perception. Answer: the process of organizing and interpreting sensory
information, enabling us to recognize meaningful objects and events.
● bottom-up processing. Answer: analysis that begins with the sensory
receptors and works up to the brain's integration of sensory
information.
● top-down processing. Answer: information processing guided by
higher-level mental processes, as when we construct perceptions
drawing on our experience and expectations.
● selective attention. Answer: the focusing of conscious awareness on a
particular stimulus.
● inattentional blindness. Answer: failing to see visible objects when our
attention is directed elsewhere.
● change blindness. Answer: failing to notice changes in the
environment.
, ● transduction. Answer: conversion of one form of energy into another.
In sensation, the transforming of stimulus energies, such as sights,
sounds, and smells, into neural impulses our brain can interpret
● psychophysics. Answer: the study of relationships between the
physical characteristics of stimuli, such as their intensity, and our
psychological experience of them
● absolute threshold. Answer: the minimum stimulation needed to detect
a particular stimulus 50 percent of the time
● signal detection theory. Answer: a theory predicting how and when we
detect the presence of a faint stimulus (signal) amid background
stimulation (noise). Assumes there is no single absolute threshold and
that detection depends partly on a person's experience, expectations,
motivation, and alertness.
● subliminal. Answer: below one's absolute threshold for conscious
awareness.
● priming. Answer: the activation, often unconsciously, of certain
associations, thus predisposing one's perception, memory, or response
● difference threshold. Answer: the minimum difference between two
stimuli required for detection 50 percent of the time. We experience
the difference threshold as a just noticeable difference (or jnd).