AP Psychology Sensation
and Perception 2026 |
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Questions, Answers,
Rationales & Exam Review
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Updated 2026 Questions and Answers
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Rationales
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, Sensation Detecting physical energy from the environment and encoding it as neural signals
Bottom-Up Processing Analysis that begins with the sensory receptors and works up to the brain's
integration of sensory information.
Externally Driven.
Perception Selecting, organizing, and interpreting what comes in your window as meaningful
objects and events.
Top-Down Processing Guided by higher level mental processes, such as experience, motivation, and
expectations
Perceptual Adaptation Ability to adjust to an artificially displaced field
Psychophysics The study of how physical energy relates to our psychological experience
Transduction Conversion of one form of energy into another
Absolute Threshold The minimum stimulation needed to detect a particular stimulus 50% of the time
Difference Threshold The minimum difference a person can detect between any 2 stimuli 50% of the time
(JND)
Weber's Law Difference thresholds differ by a constant percentage rather than a constant
amount.
Signal Detection Theory Predicts when we will detect weak stimuli amid background noise
Depends on experience, expectations, motivation, and fatigue level
Subliminal Messages Stimuli below one's absolute threshold
Unconsciously sensed
Works to an extent
and Perception 2026 |
Study Guide, Practice
Questions, Answers,
Rationales & Exam Review
| Complete Ethics Study
Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, Sensation Detecting physical energy from the environment and encoding it as neural signals
Bottom-Up Processing Analysis that begins with the sensory receptors and works up to the brain's
integration of sensory information.
Externally Driven.
Perception Selecting, organizing, and interpreting what comes in your window as meaningful
objects and events.
Top-Down Processing Guided by higher level mental processes, such as experience, motivation, and
expectations
Perceptual Adaptation Ability to adjust to an artificially displaced field
Psychophysics The study of how physical energy relates to our psychological experience
Transduction Conversion of one form of energy into another
Absolute Threshold The minimum stimulation needed to detect a particular stimulus 50% of the time
Difference Threshold The minimum difference a person can detect between any 2 stimuli 50% of the time
(JND)
Weber's Law Difference thresholds differ by a constant percentage rather than a constant
amount.
Signal Detection Theory Predicts when we will detect weak stimuli amid background noise
Depends on experience, expectations, motivation, and fatigue level
Subliminal Messages Stimuli below one's absolute threshold
Unconsciously sensed
Works to an extent
