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Ch. 13 - Sensory - Perceptual Development questions and answer

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Ch. 13 - Sensory - Perceptual Development questions and answer

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  • June 23, 2024
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  • 2023/2024
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Ch. 13 - Sensory - Perceptual
Development
acuity - correct answer-- sharpness of sight;
- 1st month: 20/400 (5% of adult level);
- infant can differentiate facial features at 20 in.;
- approx. 20/30 by age 5 & 20/20 by age 10

aspects of object perception - correct answer-- figure & ground: objects of interest seen as
distinct from background, mature at about 8 yrs.

- whole & part: parts of picture or object discriminated from whole, but can be integrated,
mature at about age 9

- shape & orientation: object recognized even if its orientation changes, mature at about 10
yrs.

audition in infancy - correct answer-- infants' threshold for sound higher than adults' but
allows detection of normal speaking voice;
- rapid improvement seen in 1st week;
- at 3 months, infants hear low-frequency sounds well

auditory changes w/aging - correct answer-- hearing loss (presbycusis) more frequent in
older adults;
- some loss might have physio source;
- some loss might result from lifelong exposure to environmental noise;
- absolute & differential thresholds generally increase;
- hearing amid noisy background more difficult

auditory development: sensation - correct answer-- external ear;
- middle ear;
- cochlea of inner ear

auditory perception - correct answer-involves perception of:

- location: mature by age 3;
- differences in similar sounds: mature about age 8;
- patterns;
- auditory figure & ground

body awareness - correct answer-- identifying body parts: children improve in labeling;
- objective awareness of self develops in 2nd yr.;
- up to 30 months scale errors common but improve thereafter;
- knowing body's spatial dimensions: children master up & down, front & back, then side to
side

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