Rachel is studying the causes, consequences, and treatments of mental illness. She samples 100 people diagnosed with generalized anxiety disorder. She provides each individual in her sample w
either a new untested drug, a placebo, or a nocebo (which occurs when a person expects negative side effects of a medication), Rachel measures sympathetic nervous system arousal a week bef
and a week after the study. The results of the study appear in the following graph.
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Answer:

part a

random assignment ensured each participant had the same chance of being in each group so that means that the results can be more trusted as it leaves less room for data skews based on unfair grouping of participants.

the research method used was an experiment it was not effective, because as shown in the graph the results from the placebo and new drug are the the same so there was no affect on the levels of arousal with the new drug.

elements that limit the generalizability of her study include environmental factors of participants, length of time using drug, small sample size, and limited information about participants. these all affect the generalizability because each of these elements could vary greatly among test and especially in just a 100 person sample size it is hard to conclude that the results will be the same with people everywhere with GAD.

part b two physiological reactions she could have used are increased heart rate and blood pressure because these are typical signs of symptomatic nervous system arousal.

part c GABA blocks impulses between nerves in the brain cells  and with general anxiety disorder there is lots of stimuli's and when GABA is taken it can help create a calming affect  which reduces anxiety and helps people to relaxed rather than be anxious or on edge.

The relationship on the graph is showing that to have a good performance the optimal amount of arousal must be present because having too much arousal, like in many cases in which Rachel is studying, can cause anxiety and stress, and on the other side having not enough arousal can lead to consequences of not being able to sustain attention and lacks motivation.

Explanation:

CAUSES is a project determining the clinical impact of DNA sequencing for undiscovered diseases in British Columbia, and further observations are as follows:

Find out more information about the observation here:

brainly.com/question/9679245

Which of the following scenarios would best indicate a farmer using Green Revolution agricultural methods?

A) A farmer switches from a plow pulled by a horse to a plow pulled by a tractor
B) A tribe begins to rely on irrigation to water their crops, which means they no longer engage in shifting cultivation
C) Scientists working for a German corporation develop an herbicide that kills 98% of unwanted vegetation in their lettuce crops, but does not damage the lettuce.
D) Indonesian farmers harvest coffee beans and then burn the remaining vegetation, planning to return to the field in six years.
E) An American corporation opens a 600 acre farm in Costa Rica which harvests $60 million worth of sugar cane annually.

Develop an argument that explains whether or not hate speech - speech that offends or insults groups based on race, religion, sexual orientation, or disabilities - should be illegal in the United States.

Helppp please helppppp

Which of the following describes a feature of the original central business district (CBD) found in most cities?
A. Manufacturing space is located in the middle of the original CBD
B. Residential space is genuinely not permitted in the original CBD
C. Retail spaceis generally not permitted in the original CBD
D. Land values are the highest of any zone in the metropolitan area
E. Land values are the lowest of any metropolitan area

Which of the following statements explains the cost and distance relationship illustrated in the model in relation to the urban area's residential patterns?
A. Since land is more expensive in the suburbs wealthier families build larger single-family homes in zone five in areas that provide amenities such as private schools for their children
B. Land is cheaper near the central business district(CBD)resulting in the construction of low income apartments and giving low income residents access to the amenities of the CBD
C. The lower cost of land farther from the CBD makes it affordable to build single-family homes in zones 5 and 5 for a middle income and high income residents who desire to move into less crowded areas
D. People do not live in the CBD because of the traffic congestion, high cost of land, and lack of amenities such as museums and restaurants
E. Population density increases with the distance from the CBD and land prices decrease allowing residents of all income levels to move farther away from zone 2

Describe ONE difference between the level of industrialization typically seen in more developed countries and the level seen in less developed countries.