PSY 2012 CH 4-6 TEST EXAM
QUESTIONS AND ANSWERS 100% PASS
2026/2027
Illusion - ANS perception in which the way we perceive a stimulus doesn't match its physical
reality
sensation - ANS detection of physical energy by sense organs, which then send information
to the brain
perception - ANS the brains interpretation of raw sensory inputs
transduction - ANS the process of converting an external every or substance into electrical
activity within neurons
sense receptor - ANS specialized cell responsible for converting external stimuli not neural
activity for a specific sensory system
sensory adaptation - ANS activation is greatest when a stimulus is first detected
psychophysics - ANS the study of how we perceive sensory stimuli based on their physical
characteristics
@2026 ALLRIGHTS RESERVED 1
, absolute threshold - ANS lowest level of a stimulus needed for the nervous system to detect
a change 50 percent of the time
just noticeable difference - ANS the smallest change in the intensity of a stimulus that we can
detect
Weber's Law - ANS there is a constant proportional relationship between the JND and
original stimulus intensity
signal detection theory - ANS theory regarding how stimuli are detected under different
conditions
inattentional blindness - ANS failure to detect stimuli that are in plain sight when our
attention is focused elsewhere
hue - ANS color of light
pupil - ANS circular hole through which light enters the eye
cornea - ANS part of the eye containing transparent cells that focus light on the retina
lens - ANS part of the eye that changes curvature to keep images in focus
accommodation - ANS changing the shape of the lens to focus on objects near or far
@2026 ALLRIGHTS RESERVED 2
QUESTIONS AND ANSWERS 100% PASS
2026/2027
Illusion - ANS perception in which the way we perceive a stimulus doesn't match its physical
reality
sensation - ANS detection of physical energy by sense organs, which then send information
to the brain
perception - ANS the brains interpretation of raw sensory inputs
transduction - ANS the process of converting an external every or substance into electrical
activity within neurons
sense receptor - ANS specialized cell responsible for converting external stimuli not neural
activity for a specific sensory system
sensory adaptation - ANS activation is greatest when a stimulus is first detected
psychophysics - ANS the study of how we perceive sensory stimuli based on their physical
characteristics
@2026 ALLRIGHTS RESERVED 1
, absolute threshold - ANS lowest level of a stimulus needed for the nervous system to detect
a change 50 percent of the time
just noticeable difference - ANS the smallest change in the intensity of a stimulus that we can
detect
Weber's Law - ANS there is a constant proportional relationship between the JND and
original stimulus intensity
signal detection theory - ANS theory regarding how stimuli are detected under different
conditions
inattentional blindness - ANS failure to detect stimuli that are in plain sight when our
attention is focused elsewhere
hue - ANS color of light
pupil - ANS circular hole through which light enters the eye
cornea - ANS part of the eye containing transparent cells that focus light on the retina
lens - ANS part of the eye that changes curvature to keep images in focus
accommodation - ANS changing the shape of the lens to focus on objects near or far
@2026 ALLRIGHTS RESERVED 2
