Young-Helmholtz Trichromatic (three color) Theory This is a theory of colour and how humans perceive colour. According to this theory, the human …
Category: Y
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Yerkes-Dodson Law of Arousal This law states that an organism’s performance can be improved if that organism is aroused in some manner. …
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Y Chromosome The 23rd pair of chromosomes are the sex chromosomes. There are two types of sex chromosomes, an X and a …