1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bogdan [553]
3 years ago
10

Students observed that when they played violent video games, they experienced an increase in heart rate. One student group condu

cted an experiment using five classmates as subjects. Students predicted that playing a violent video game would increase heart rate more than watching a violent movie. The students collected baseline data while the subjects sat still, breathing deeply. For the first stimulus, the students played a violent war-type video game for ten minutes. They rested for ten more minutes, and then watched the landing during D-Day from the movie "Saving Private Ryan".
Materials:
~Vernier computer interface : To record and interact with the data statistics.
~Vernier heart rate monitor
~ Video of movie
~Interactive video game

The initial heart rates, shown next to subject number in the graph, was taken wearing noise canceling headphones, with subject's eyes closed.
Each participant was subjected to the stimuli in this order: baseline, video game, movie scene. The date collected in shown here:

What would be an appropriate research question for this experiment?
A) Does any kind of violence cause an increase in human heart rate?
B) What type of stimuli will substantially increase your heart rate?
C) Will playing violent video games increase your heart rate more than watching a violent movie?
D) Will students remain calmer when at rest, listening to music or will they become agitated when playing a violent game?

The students concluded that playing violent video games caused a greater increase in heart rate than watching a violent movie. Some of the students thought the results of the study to be inconclusive. Can you site a reason why some students may feel this way?
A) Only five subjects were tested; they should test a larger group of randomly chosen subjects.
B) There was only one control situation; the design should include at leas two control situations.
C) They did not test other ways to increase heart rate as a method of comparison: running, exercising, walking alone in the dark.
D) They did not test situations that one would expect to lower heart rate, like playing soothing music or letting students pet a kitten

Biology
2 answers:
romanna [79]3 years ago
8 0

Answer:

1. C

2. A

Explanation:

1. The main objective of the researcher is to find the difference in impact caused on an individual when he/she watches a violent movies with the impact caused on an individual when he/she play video game for a certain period of time. Considering the objective of the research, option C is the correct answer.  

2. The sample size for this research was not adequate. The same subjects were first asked to play games and then watch a violent movie with a break of 10 minutes only. This could have produced an overlapping effect.  

Hence, option A is correct

Vera_Pavlovna [14]3 years ago
7 0

Answer:

the first question answer is C and for the second one is D

You might be interested in
13.<br> A glucose<br> B carbon dioxide<br> C oxygen<br> D DNA
olga nikolaevna [1]

Answer:

B carbon dioxide

Explanation:

the process uses oxygen and produces carbon dioxide as a waste product.

5 0
2 years ago
When trying to determine the evolutionary relationship between two species would?
soldi70 [24.7K]
<span>A biologist would concentrate on homologous features since they originated from a shared ancestor.</span>
3 0
3 years ago
What is true about relative humidity?
nekit [7.7K]

Answer:

D. It is the general term used to describe the amount of water vapor in the air

Explanation:

It's been a while since I've taken meteorology (2 years), but I think this is the correct answer because humidity in general refers to the amount of water vapor in the air and as we are discussing relative humidity, it cannot indicate the actual quantity of water vapor in the air (thus ruling out B). Therefore, D makes the most sense. I believe C refers to adiabatic cooling.

5 0
3 years ago
Read 2 more answers
Which of the following statements is FALSE?
Naya [18.7K]

Answer: d. None of the above is false.

Explanation: The reasons are:

Intermolecular forces should be reduced when molecules need to be vaporized, otherwise they will not be converted into vapours.

When the temperature increases, forces of attraction decreases which allows molecules to evaporate because energy will be increased which allows molecule to break bonding between them. Hence increasing temperature has effect on vaporization.

Dispersion forces is the weakest force between molecules and hydrogen bond is strong so molecule having only dispersion force will evaporate at the higher rate.

8 0
3 years ago
What is the relationship between the nucleotides, nucleic acids, and DNA?
Anika [276]

Answer:

Explanation:

Nucleotides are building blocks of nucleic acids (DNA and RNA). A nucleic acid contains a chain of nucleotides linked together with covalent bonds to form a sugar-phosphate backbone with protruding nitrogenous bases. For example, DNA contains two such chains spiraling round each other in the famous double helix shape.

5 0
3 years ago
Other questions:
  • A human being receives ________ chromosomes from each parent.
    5·1 answer
  • In the name Acer rubrum, the word rubrum designates the species. Please select the best answer from the choices provided T F
    13·2 answers
  • Why is it not always helpful to represent the natural world with models?
    14·2 answers
  • If the earth was not spinning, there could still be a
    9·2 answers
  • Explain why the answer is right please
    10·1 answer
  • Question 13 of 20 :
    9·1 answer
  • Which statement is a scientific law?
    10·1 answer
  • What skills and education do careers in agronomy require?
    6·1 answer
  • What can be used to measure primary productivity in an ecosystem?(1 point)
    8·2 answers
  • When there is a cut in the skin and bacteria enter the body, the immune system responds. First, macrophages approach the area of
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!