TWO-WORD STAGE
the development time frame, ranging from 18 to 24 months old, whenever kids utilize two words at the same time…
ULTRADIAN RHYTHM
any periodic variance in physiological or psychological operation recurring within a cycle of more than one day, like the female…
ULTRASOUND
noun. noise whose frequency goes beyond the wide range of audibility of human beings, which is, beyond 20 kHz. With…
ULTRAVIOLET (UV)
noun. the part of the electromagnetic spectrum from 0.5 nm to 400 nm. The upper range of the ultraviolet part…
ULTIMATE OPINION TESTIMONY
opinion testimony by a witness deemed to be an expert which directly informs the court about the issue being argued.
UMBILICAL CORD
a cord-like structure housing two arteries and a vein in a cylindrical membrane which links the fetus to the placenta…
UNBIASED SAMPLING PLAN
a survey model wherein the values generated by the samples clash in the long run with the authentic values in…
UNCERTAINTY
noun. the state or condition wherein something isn't correctly or totally acknowledged. 2. absence of confidence or conciseness in one's…
UNBIASED ESTIMATOR
a statistic whose predicted value is the value of the parameter being approximated. Therefore, if C is utilized to approximate…
UNCERTAINTY PRINCIPLE
a standard which it is impossible to gauge correctly on both the placement and the momentum of a particle at…
UNCERTAINTY FACTOR
with regard to psychological aesthetics, a trait of a work of art which is correlated with elevated positive scores on…
UNCONDITIONED STIMULUS (UCS US)
a stimulant which induces an unconditioned reaction, as in withdrawal from a hot stovetop, contracting of the pupil upon exposure…