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Although Mr.Tong was obviously busy reading an absorbing novel,his 4-year-old daughter kept interrupting him with comments and questions about the TV cartoons she was watching.Before Mr.Tong becomes irritated with his daughter for being inconsiderate,he should be alerted to Piaget's concept of
Absolute Threshold
The minimum intensity of a stimulus required to be correctly perceived by sensory systems at least 50% of the time.
Difference Threshold
The minimal change in stimulus that can just barely be detected by an organism, also known as the just noticeable difference (JND).
Trichromatic Theory
A theory of color vision proposing that colors are perceived through the relative rates of response by three kinds of cones, each one sensitive to a range of wavelengths.
Opponent-process Theory
A psychological and physiological model that explains how humans perceive colors as the result of complex interactions between various neurons that process color in an antagonistic manner.
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