Sensory, Attentional and Perceptual Processes
Bihar Board · Class 11 · Psychology
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What is sensation and how does it differ from perception?
Answer
Sensation is the initial experience of a stimulus registered by a sense organ - it's the process of detecting and encoding physical stimuli. Examples include experiencing 'bright', 'loud', or 'warm'.
Define Absolute Threshold (AL) with an example.
Answer
Absolute Threshold is the minimum value of a stimulus required to activate a given sensory system. It's the point where a stimulus can be detected 50% of the time. Example: The minimum number of sugar…
What is Difference Threshold (DL) and how is it measured?
Answer
Difference Threshold (DL) is the smallest difference in stimulus value necessary to notice two stimuli as different from each other. It's measured as the minimum change that produces a sensation diffe…
Name the seven sense organs and what information they provide.
Answer
External senses: 1) Eyes (vision), 2) Ears (hearing), 3) Nose (smell), 4) Tongue (taste), 5) Skin (touch, warmth, cold, pain). Internal senses: 6) Kinesthetic system (body position), 7) Vestibular sys…
Define attention and list its four main properties.
Answer
Attention is the process of selecting certain stimuli from a group of others for focused processing. Its four properties are: 1) Selection - choosing specific stimuli, 2) Alertness - readiness to deal…
Explain the difference between focus and fringe of attention with an example.
Answer
Focus of attention is when awareness is centered on a particular object or event - you're clearly conscious of it. Fringe of attention includes objects/events away from the center of awareness that yo…
What is selective attention and what factors influence it?
Answer
Selective attention is the selection of limited stimuli from many available stimuli. External factors: size, intensity, motion, novelty, complexity of stimuli. Internal factors: Motivational (biologic…
Compare Broadbent's Filter Theory with Triesman's Filter-Attenuation Theory.
Answer
Broadbent's Filter Theory: Multiple stimuli create a bottleneck, selective filter allows only one stimulus through for processing, others are completely blocked. Triesman's Filter-Attenuation Theory: …
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