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Y CHROMOSOME

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

the sex chromosome which is accountable for ascertaining maleness in human beings and other mammals. The body cells of normal males have one and one x chromosome. The Y is a great deal smaller than the X chromosome and is considered to have merely a small handful of working genes. Therefore, males are much more vulnerable to sex-related illness than females, because they can't counteract any flawed genes carried on the X chromosome.

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Y-AXIS

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

noun. the vertical axis on a graph.

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Y-LINKED INHERITANCE

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

a type of sex-connected inheritance wherein a recessive trait is genetically transposed through a sole gene on the y chromosome.

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YANTRA

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

noun. a visual pattern that attention is centered upon in concentrative meditation.

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YATES CORRECTION

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

an alteration for continuity utilized in calculating chi-square in effort to enhance the correctness of the examination.

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YAWNING

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

the act of pulling in a volume of air via the mouth which is much bigger than that inspired in typical respiration, serving to enhance oxygen that goes to the brain. Some findings imply that yawning is mediated by the same neurotransmitters inside the brain which impact feelings, disposition, hunger, etc.

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YERKES-DODSON LAW

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

a law postulating that the association between drive and action can be signified by an inverted U-curve .

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YERKES, ROBERT MEARNS

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

American psychobiologist. Earning his doctorate at Harvard University in 1902 under the instruction of Hugo Monsterberg, Yerkes stayed there as a professor till World War I. Apart from his position as an organizer and advocate of psychology, Yerkes is primarily remembered for his illuminating experiments within the field of comparative psychology at the Yale Laboratories of Primate Biology, later re-named the Yerkes Laboratories.

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YERKISH

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

noun. a language composed of geometric shapes which has been taught to non-human primates in analyses of language learning and usage. There has been some controversy about whether animals trained with Yerkish demonstrate authentic language capacity.

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YES-NO JUDGMENT TASK

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

with regard to psychophysics, a signal detection job wherein involved parties undergo a sequence of trials wherein they must judge the existence or absence of a signal.

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