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LuckyWell [14K]
2 years ago
7

One of the following experiments has an internal validity problem and the other does not. First, identify which experiment DOES

NOT have an internal validity problem. Next, for the remaining experiment, identify at least one problem that threatens the internal validity.a) A cognitive psychologist believes that people learn better when they spread out their studying over several days, so she creates a study with three groups of participants. Each group studies the same list of 120 Chinese vocabulary words (none of the participants had studied Chinese before). One group studies the words for 20 minutes on the first day. The second group studies the words for 20 minutes on the first and second days. The last group studies the words for 20 minutes on the first, second, and third days. On the fourth day, all of the participants are tested on how well they have learned the Chinese vocabulary words. The people in the last group scored the best, so the researcher concludes that distributed studying does improve people’s ability to learn.b) A human factors psychologist is comparing visibility features for automobiles. (Human factors psychologists study how humans interact with the material world.) He plans to test whether drivers will avoid obstacles behind their cars more effectively when the car is equipped with an enhanced rearview mirror, a rear video camera system, or an object detector that sets off a buzzer alarm. He places a sample of 25 drivers into each of three cars. The cars are identical except for their object detectors. The drivers spend 1 hour familiarizing themselves with their vehicles and their object detectors by running through a set of drills on a closed driver’s course. During a test phase, the researcher places a set of objects behind each driver. The test objects range in height, color, and movement. Each driver attempts to back up his or her car while avoiding each of the test objects. Each object is presented three times each. The psychologist finds that, on average, drivers respond more accurately to the rear camera video system compared to the rearview mirror or the buzzer alarm.
Social Studies
1 answer:
grigory [225]2 years ago
4 0

Answer:

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Explanation:

asdfasdfmna sdf ansdf masdfmnnasd,f  adsnfn akjsdfnaksjdfaksd

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As an informational manager, Lia Morris would do all of the following EXCEPT:
stepladder [879]

Answer:

d. direct and counsel subordinates in daily activities

Explanation:

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3 0
2 years ago
In which activity did colonists directly change the natural environment? Options
Marrrta [24]

I think it may be

G) damming rivers to create power

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2 years ago
Among the following choices, what is the best indication that a particular ethical theory is strong?Correct!
dezoksy [38]

Answer:

Option A

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It does not need to consistent be with the law certainly as every lawful thing is not ethical every time but it has to be in alignment with the moral conduct that majority of the individuals living the society follow through.

3 0
2 years ago
The breakfast cereal aisle of the grocery store is a delightful place with boxes decorated with Barbie, Ninja Turtles, and Batma
maks197457 [2]

Answer:

The ethics of the manufacturers is less sensitive in marketing such products, most a times what they are after is profit at all cost, and they know clearly that children are mostly taken away by what they see and they cant resist it once they see such products.

The action that should be taken is to ensure that cereal aisle abide by some certain rules and regulations of not keeping such products on display but they should be on demand by either the parents or children accompanied by an adult.

Explanation:

5 0
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