Answer:The technique use in this study is referred to as a double blind
Explanation:
A double blind study is the one that both participants and experimenters or researchers are not made aware who is given a certain treatment.
In double blind researchers will not know if what they are receiving is part of the test itself as they interact with participants or they are receiving a placebo.
This process is useful to eliminate and avoid bias results.
For example, in the above text the effect of caffein on attention is being tested so the researchers will not know whether the drink given to them is actual for the test or just the placebo , they don't know who is in control of the experiment.
Answer:
Prefrontal cortex.
Explanation:
The prefrontal cortex is an integral part of an individual's cognitive control functioning. It covers the front part of the frontal lobe, where various sensory modalities are integrated.
So, when Jack suffers the trauma to his brain, the alterations to his personality are the effects of the damage in his prefrontal cortex. Since this part of the brain is responsible for one's executive movements like focus, understanding the consequences of one's actions, personality development, decision making, etc, Jack's trauma left him devoid of these abilities.
Thus, his injury is in his brain's prefrontal cortex.
A.The Roman empire relied on physical features as natural barriers.
I think the answer is a I hope this helps:)
