YOHIMBINE

a stimulus alkaloid stemming from the bark of the African tree Pausinystalia yoliimbe and from Rauwolfia serpentina root. It serves as an antagonist at...

YANTRA

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

YES-NO JUDGMENT TASK

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

YERKES-DODSON LAW

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

YATES CORRECTION

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

YAWNING

the act of pulling in a volume of air via the mouth which is much bigger than that inspired in typical respiration, serving to...

Y CHROMOSOME

the sex chromosome which is accountable for ascertaining maleness in human beings and other mammals. The body cells of normal males have one and...

YERKES, ROBERT MEARNS (1876- 1956)

During his years as a graduate student at Harvard, Yerkes shifted from an early interest in medicine to research on the evolution of behavior...

YOKED-CONTROL GROUP

research subjects in a control group who are subject to some of the same encounters as subjects in the experimental group, but not inclusive...

Y-LINKED INHERITANCE

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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