Dr. Julian conducts an experiment to test the hypothesis that ...

[CQXA]

Dr. Julian conducts an experiment to test the hypothesis that when more witnesses to a crime are present, any one witness is less likely to help the victim.
 
  After providing a cover story, she randomly assigns participants to witness a staged crime either alone, in the presence of two other people, or in the presence of ten other people. Then, she assesses how many people make an effort to help. Identify the independent and dependent variables in this study.
 
  What will be an ideal response?

Question 2

All of the following except one are part of the guidelines for ethical research. Which is not?
 
  a. All research is reviewed by an IRB (institutional review board) that consists of at least one scientist, one nonscientist, and one person unaffiliated with the institution.
  b. A researcher receives informed consent from a participant unless deception is deemed necessary and the experiment meets ethical guidelines.
  c. When deception is used in a study, participants must be fully debriefed.
  d. There must be a cover story for every study, because all studies involve some type of deception.

[hollysheppard095]

Answer to Question 1

Answer: The independent variable is the one being manipulated or varied by the researcher, in this case, how many witnesses are present when encountering a staged crime. The dependent variable is the one that is measured as an outcome of the independent variable, and in this case is whether or not people made an effort to help the victim.

Answer to Question 2

Answer: D

[CQXA]

Thanks for the timely response, appreciate it

[daiying98]

Excellent