The correct answer would be, Carryover Effect.
In this case, the study is contaminated by a Carryover Effect.
Explanation:
When an individual subject or a group of subjects, carries over from one experiment to another experiment, this is called as the carryover effect.
In carryover effect, subjects are exposed to one experiment, and then after some time they are carried over to another experiment. This effect is called as the Carryover Effect.
In the given example, Juan carried out experiment to check the effectiveness of two drugs in treating migraines on the same participant but with a gap of 8 hours. After 8 hours, the first drug was still in participant's system. In such a case, the study has been said to be contaminated by the Carryover Effect.
The true results of both drugs would have seen if the second drug was given to the participant when the first drug was completely out of the body of the participant.
Learn more about Carryover Effect in other scenarios at:
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<u>Advice of saying three time that 'The mountain of the Fenian women and the sky over it is all on fire'</u>
Explanation:
T<u>he witches order the woman to fetch water from the well in the sieve so as to use if for the cake.</u>
When the woman is unable to draw water from the well,a voice in the well asks her to bid yellow clay with moss and plaster the sieve with it so it will hold.
S<u>he does and then the voice asks her to enter the house from North and scream thrice 'The mountain of the Fenian women and the sky over it is all on fire'.</u>
The witches immediately run away to their secret abode.
This is the answer to your question. Hope this helps!
From the fourth day after fertilization until the end of eight week, the unborn baby is called an embryo and from 9th week is referred as fetus until the end of conception.It is an organism in the earliest developmental stage.
The hieroglyphics was their written language and the papyrus allowed them to write down this language