(v. t.) To throw or thrust with a sudden, smart movement; to kick or strike suddenly; to jerk.
(v. t.) To strike or lash with a whip.
(v. i.) To throw out the heels; to kick; to jerk.
(v. i.) To move a quick, jerking motion.
(n.) A sudden or quick thrust or motion; a jerk.
Example Sentences:
(1) The results were in agreement with the Yerkes-Dodson law in that the optimal physiological activation level for rapid performance varied with the degree of task difficulty, relatively lower activation being more favorable the more difficult the task.
(2) Chromobacteriosis caused by Chromobacterium violaceum was diagnosed as an Assam macaque, Macaca assamensis, that died 4 days after receipt of the Yerkes Primate Center, It was received from a primate facility in Florida where it has been housed with a group of rhesus monkeys for 5 years.
(3) The Yerkes Regional Primate Research Center has successfully bred chimpanzees since 1930.
(4) The results are discussed within the theoretical framework of the Yerkes-Dodson Law, which states a relationship between drive level, performance and different degrees of task difficulty.
(5) This paper describes the incidence of multiple births in the Yerkes Chimpanzee colony for a period of about 63 years.
(6) Greater than 75% of the sooty mangabey monkeys at the Yerkes Regional Primate Research Center are naturally infected with SIV without any apparent clinical symptomology.
(7) The apparatus was modified Yerkes discrimination apparatus.
(8) The relationship between arousal and efficiency of the brain is shown by the inverted U of the Yerkes-Dodson curve.
(9) The infants and their mothers lived as members of a captive social group at the Yerkes Regional Primate Research Center.
(10) The American Psychological Association Committee on Precautions in Animal Experimentation was founded in 1925 at the instigation of Walter B. Cannon, with Robert M. Yerkes as the first chair.
(11) Healthy mangabey monkeys in a colony at the Yerkes Regional Primate Research Center were found to be infected with a retrovirus related to human immunodeficiency virus (HIV).
(12) This article also reviews the literature on memory for stressful events with respect to two major theories: the Yerkes-Dodson law and Easter-brook's cue-utilization hypothesis.
(13) The results indicate that most if not all SIV-seronegative mangabeys from the colony at the Yerkes Primate Center are in fact infected with SIVsmm despite their lack of humoral immune response, confirming previous immunological and virological observations made by our laboratory.
(14) The analysis of behavioural sequences makes it probable that, according to the criteria of Yerkes and Hassenstein, we are dealing with problem-solving behaviour guided by regrouping of engrams.