Test 2 Flashcards
Examining the effect of a drug court program on offenders’ drug use in order to make a recommendation as to whether more states should establish drug courts is an example of:
b
A researcher wants to examine the role that girls have in the social structure of a gang. She wants to observe the gang and hear how girls talk about the experience of being a gang member. When collecting data, she is most likely to use what type of method?
Qualitative
True experiments must have:
True experiments must have all of the following elements: independent and dependent variables, a pre-test and post-test and experimental and control groups.
Quantitative research is more scientific than qualitative research.
False
For the hypothesis “if gun control laws are stricter, crime will decrease,” ____________ is the independent variable and _____________ is the dependent variable.
Strength of gun control laws, criminal activity level
It is not necessary to an experiment that the theory be falsifiable.
false
The dependent variable is hypothesized to influence the independent variable.
false
Most universities require researchers to have all research involving human subjects authorized by the:
institutional review board
The institutional review board (IRB) reviews all research carried out with federal funding even if it does not involve human subjects
false
One way to maintain openness and honesty in research is to describe research procedures in published studies
true
Operationalization is the process of:
specifying the operations that will be used to indicate the value of a variable
______________means all of the variable’s attributes or values can be classified into one of the
mutually exclusive
An evaluation of a prevention program includes the statement that “the average delinquency of adolescents was reduced by 33% during the time of the study.” If this statement is literally true, the level of measurement of delinquency in the study was at least:
dichotomous
Variables are created when concepts are operationalized.
true
If an instrument is valid and reliable in one setting, then it will be reliable and valid in all settings.
false
For a study on the health problems of drug users, a random sample of New York City high school students is drawn. A low level of health problems is found. Jim argues that the findings are generalizable to New York City high school students because they were based on a random sample. Meagan argues that the findings are not generalizable to high school students outside of New York City. How would you evaluate their positions?
Both claims concerning sample and cross-population generizability are correct
When all units in the population are identical or resources are unlimited:
b
You have been asked to draw 400 cases from a population of 6,000. You decide on a systematic random sampling strategy. The sampling interval is:
b
A list of elements from which a sample is to be selected is termed a:
sampling frame
Which of the following is a nonprobability sampling method?
cluster
In a true simple random sample, the probability of selection:
unknown
In proportionate stratified random samples, the probability of selection is:
equal between males and females
Most gang members are male. In order to obtain an equal number of male and female gang members, a researcher should use a:
Disproportionate quota sampling
The National Crime Victimization Survey selects subjects by identifying rural counties or metropolitan areas as primary sampling units, then chooses geographic regions within these units, and then chooses addresses within the geographic regions. This is an example of:
Multistage cluster sampling
Which of the following circumstances makes disproportionate stratified random sampling more appropriate?
A concern with small groups in the population
A researcher obtains a list of all prisons in the United States. She draws a random sample of 75 of the prisons on this list. She then obtains a list of all inmates from the warden at each of the 75 prisons and interviews a random sample of 30 inmates at each prison. This is a:
Multi stage cluster sampling
A researcher randomly selects 4 days out of 1 month to interview participants of a drug treatment program. The researcher will ask for volunteers in each group session. This sampling design is
Availability Sample
To study organized crime, a researcher is able to interview leading members of organized crime families. During these interviews, she requests the names of leading members of other organized crime families. She interviews these other leaders, asks them for additional leaders’ names, and continues in this manner until she has interviewed 45 members from 19 different families. Her sampling method is:
Snowball sampling
The more heterogeneous the population, the less confidence we can have in the representativeness of a sample of any particular size.
true
A sample is the entire set of elements in which a researcher is interested.
false
A study is conducted of a population that is small enough that the entire population can be examined. This study would be considered a census.
b
Two studies test a hypothesis about the association between crime and drug use. Study A uses a cross- sectional survey design to test the hypothesis that crime increases drug use. Adults are surveyed and asked about their levels of drug use and criminal behavior. Study B uses a cross-sectional survey design to test the hypothesis that juvenile delinquency causes drug use. Adults are surveyed about their delinquent behaviors in adolescence and whether they are currently using drugs. With respect to the two studies:
Study B does a better job of meeting criteria for establishing causality
An experimental study has found that alcoholics who attend peer group meetings are more successful in reducing their consumption of alcoholic beverages than alcoholics who do not attend such meetings. In the conclusions to their report on this experiment, the researchers suggest that it will be important for future studies to determine whether the support group effect was due to the social support itself, the sharing of technical information, or the time taken up by the meetings. This suggestion reflects a concern with:
Causal mechanisms
Nonexperimental tests of causal hypotheses will continue to be popular because:
practical and ethical problems in randomly assigning people to different conditions preclude the test of many important hypotheses with an experimental design
Studies that involve data collected at two different points in time are termed:
b
Which of the following is not a requirement of a true experiment?
what is required: must meet all these Random selection of subjects
Use of control groups
Random assignments to control and experimental groups
Random assignment of groups to control and experimental conditions
In which nonexperimental design is data collected at only one point in time?
cross-sectional design