Psyc 255 Quiz 4 All Questions With Answers LIBERTY UNIVERSITY , (Latest Version ) 2020/2021

Psyc 255 Quiz 4 • Question 1 0 out of 2 points Which of the following is a type of nonprobability sampling procedure? • Question 2 2 out of 2 points While selecting participants for her study, Jamie draws names from a hat to place participants in groups. Once the participant’s name has been selected, she does not put it back in the hat. Jamie is using _____________. • Question 3 2 out of 2 points In order to secure participants for his study, Jason uses class rosters from instructors. Jason selects every 5th person on the instructor’s class rosters for participation in his experiment. Jason is using _____________ sampling. • Question 4 2 out of 2 points Which of the following is not one of the types of probability sampling procedures? • Question 5 2 out of 2 points By selecting a convenience sample that is comprised of subgroups similar in number to a population, you are using a _____________ sampling procedure. • Question 6 2 out of 2 points A probability sampling technique in which a researcher begins by identifying subgroups and then randomly samples from each group is called _____________ probability sampling. • Question 7 2 out of 2 points In a _____________ sampling procedure, each individual in a population has a known probability (or chance) of being selected for a study. • Question 8 2 out of 2 points Ingrid has begun work on a research project. She has decided to recruit participants from General Psychology classes. However, she plans to make sure that her sample matches the university population in terms of ethnicity (i.e., 53% should be Caucasian, 25% should be African American, and 22% should be Hispanic American). Ingrid is planning to use which nonprobability sampling procedure? • Question 9 2 out of 2 points Studies conducted at most universities that use General Psychology students employ which nonprobability sampling procedure? • Question 10 2 out of 2 points A probability sampling technique in which a researcher identifies naturally occurring clusters of individuals from a population to select from is called _____________ probability sampling. • Question 11 2 out of 2 points According to Cohen (1965), what should be the baseline level for power? • Question 12 2 out of 2 points Stefani has identified several subgroups of individuals from the population she is studying. Stefani plans on randomly sampling participants from each of these subgroups. Stefani is using _____________ probability sampling. • Question 13 0 out of 2 points Kelly is conducting a study on campus parking for her psychology class. She begins her study by identifying naturally occurring groups of individuals who park on campus. These include those who park in the north, south, east, and west lots. She then sample participants from each of these groups. Kelly is using _____________ probability sampling. • Question 14 2 out of 2 points A researcher who places all potential participants for a study in a hat and randomly draws names for inclusion in their study is using a _____________ probability sampling procedure. • Question 15 2 out of 2 points In Kevin's study, he knows that each participant had an equal probability of being placed into each of his conditions. Kevin must have used _____________. • Question 16 2 out of 2 points When a change in the dependent variable could be due to how participants were picked or assigned to groups, __________ is a threat to internal validity. • Question 17 2 out of 2 points Which of the following statements accurately describes the use of double-blind studies? • Question 18 2 out of 2 points When a change in the dependent variable could be due to an event occurring sometime during the research study, and beyond the researcher’s control, _________ is a threat to internal validity. • Question 19 2 out of 2 points Which of the following threats to internal validity would be of concern if an outbreak of salmonella in peanut butter occurred while a study was being conducted on perceptions of peanut butter? • Question 20 2 out of 2 points When a change in the dependent variable could be due to changes in how the dependent variable was measured, _________ is a threat to internal validity. • Question 21 2 out of 2 points Research should be designed to _________ for nuisance and extraneous variables. • Question 22 2 out of 2 points Reflect on the Are You Equipped Now? section at the end of chapter 9. If the decrease in pain reported by participants was due to internal changes that occurred within the participant over a three-month time period, which of the following was a threat to internal validity? • Question 23 2 out of 2 points When a change in the dependent variable could be due to participants’ familiarity with the test, __________ is a threat to internal validity. • Question 24 2 out of 2 points __________ validity is confidence in saying that the independent variable caused the change in the dependent variable. • Question 25 2 out of 2 points If you and a friend watched an episode of Family Guy separately and counted the number of violent acts, you are likely to get different counts. Which threat to internal validity explains these results? • Question 26 2 out of 2 points Which of the following is an accurate statement regarding the similarities between extraneous and nuisance variables? • Question 27 2 out of 2 points In a __________ study, the participant has no knowledge of which group he or she has been assigned to, although the researcher knows. • Question 28 2 out of 2 points When a change in the dependent variable could be due to participants in one group talking to participants in another group, __________ is a threat to internal validity. • Question 29 2 out of 2 points Threats to internal validity are threats to saying __________. • Question 30 2 out of 2 points In a ___________ study, neither the participant nor the researcher knows which group a particular participants has been assigned.