Question 1

An important advantage of the multiple baseline design over the withdrawal design for evaluating treatments is that multiple baseline

Accepted Answer

The multiple baseline design does not require the withdrawal of a potentially beneficial treatment to demonstrate the effect of the intervention, which is a significant advantage over the withdrawal design. This is particularly important in cases where removing the treatment could be unethical or harmful.

Question 2

When a control group is used in experimental research,the members of the control group will be treated exactly the same as the

Accepted Answer

The purpose of a control group in experimental research is to serve as a baseline for comparison against the treatment group. Therefore, the control group should not be exposed to the independent variable, which is what the treatment group is being tested for. This allows researchers to determine whether any effects observed in the treatment group are actually caused by the independent variable or if they could be due to other factors.

Question 3

A person with Down syndrome typically has some level of intellectual disability and a variety of other physical characteristics,such as slanted eyes and a thick tongue.These characteristics are the

Accepted Answer

Phenotype refers to the observable physical and behavioral characteristics of an individual, which are determined by both genetic and environmental factors. Down syndrome is caused by a genetic abnormality that results in an extra copy of chromosome 21, which leads to various physical and cognitive characteristics. Therefore, the physical characteristics of a person with Down syndrome, such as slanted eyes and a thick tongue, are part of their phenotype. The other answer choices (A, C, and D) are not relevant to the concept of phenotype.

Question 4

As a child's age increases,so does her height.This is an example of a(n)

Accepted Answer

As the child's age increases, her height also increases, indicating a positive correlation between the two variables.

Question 5

The correlation between the amount of time a college student studies and the student's height in inches is probably

Accepted Answer

There is likely to be no correlation between the amount of time a college student studies and their height in inches. These are two unrelated characteristics and do not have a clear causal relationship with one another.

Question 6

The basis of an experiment is

Accepted Answer

The basis of an experiment is manipulating an independent variable to observe the effect it has on a dependent variable. This is what allows for cause-and-effect relationships to be established. Manipulating a confounding variable is not the basis of an experiment, as it can interfere with the relationship between the independent and dependent variables. In-depth fact gathering of many variables may be a part of the experiment, but it is not the basis of the experiment.

Question 7

The type of study that generally does not follow the scientific method and typically contains many confounds is the

Accepted Answer

Case studies often do not follow the scientific method strictly and can contain many confounds due to their in-depth, qualitative nature and focus on individual cases rather than controlled variables.

Question 8

While trying to discover the nature of the relationship between stress and blood pressure,a researcher asks participants to complete a difficult task.The researcher monitors the participants' blood pressure while some are exposed to noisy distractions and others stay in a quiet environment.This type of research is a(n)

Accepted Answer

The researcher is manipulating the independent variable (noisy distractions), and measuring its effect on the dependent variable (blood pressure). This is a classic experiment design.

Question 9

The advantage of using a withdrawal design as part of a single-case experiment is that the researcher can

Accepted Answer

The withdrawal design allows the researcher to determine whether the improvements gained during treatment are lost when the treatment is withheld. This helps establish the effectiveness of the treatment and provides valuable information for clinical decision-making.

Question 10

It can be important to use a double-blind procedure in a research study in order to prevent the

Accepted Answer

A double-blind procedure is used to prevent the researcher's expectations from biasing the outcome. By keeping both the researcher and the participants unaware of which group they belong to, the likelihood of the researcher unintentionally influencing the results is decreased. This allows for a more unbiased and accurate study.

Question 11

Epidemiology is the study of

Accepted Answer

Epidemiology is the field concerned with studying the incidence, distribution, and consequences of a problem (usually a health-related issue) in a population. It seeks to identify patterns and risk factors associated with a particular disease or condition so that effective prevention and treatment strategies can be developed. The other answer choices, such as research methods or various forms of therapy, may be relevant to epidemiology but are not the primary focus of this field.

Question 12

The more time one spends exercising,the less one generally weighs.The correlation between time on a treadmill each month and overall body weight would represent a

Accepted Answer

The statement suggests that as the time spent exercising increases, the overall body weight decreases, indicating a negative correlation. This means that as one variable increases, the other variable decreases.

Question 13

In a double-blind study,

Accepted Answer

In a double-blind study, neither the researcher providing the treatment nor the participants are aware of who is in the treatment and who is in the control group. This helps to eliminate bias and increase the reliability of the study's results.

Question 14

Placebos are used in experiments to

Accepted Answer

The answer of Placebos are used in experiments to
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Question 15

One important difference between a typical case study and the single-case experiment is that during the single-case experiment,behavior is generally

Accepted Answer

In a single-case experiment, behavior is measured multiple times to assess changes over time, unlike in a typical case study where behavior might not be systematically measured multiple times. This repeated measurement allows for the observation of patterns, trends, and potential effects of interventions over time.

Question 16

One of the hallmarks of the experimental method that makes it different from a correlational study is that in an experiment,

Accepted Answer

In an experiment, a variable is deliberately manipulated by the researcher in a way that would not have occurred naturally, allowing for the establishment of cause-and-effect relationships between variables. This manipulation sets an experiment apart from a correlational study, where the researcher simply observes and measures naturally occurring variables without any deliberate manipulation. The other choices are incorrect, as the researcher in an experiment is aware of the independent variable (B), and there is typically only one control group (D). (A) may be true, but it is not a distinguishing feature of the experimental method, as it also applies to correlational studies.

Question 17

The single-case experimental design is primarily criticized as having limited

Accepted Answer

The single-case experimental design is criticized for having limited external validity. This is because the research is conducted on a small sample size, and it is difficult to generalize the results to a larger population.

Question 18

The purpose of a control group in experimental research is to

Accepted Answer

The purpose of a control group in experimental research is to determine whether a treatment or independent variable actually influenced change in the dependent variable. The control group serves as a comparison to the experimental group and provides a baseline measurement for comparison. This helps to isolate the effects of the independent variable and determine its true impact on the dependent variable.

Question 19

One of the problems of using a withdrawal design as part of a single-case experiment is the

Accepted Answer

The ethical issue of removing a treatment that appears to be helping the patient is a significant concern with withdrawal designs in single-case experiments. This is because withdrawing an effective intervention can potentially harm the participant by depriving them of a beneficial treatment.

Question 20

A child is having temper tantrums at home,at school,and at his grandparents' house.After working with the parents for a while,the therapist believes that the child is being rewarded for his tantrums in each setting because his teacher,parents,and grandparents generally give him what he wants just to make him stop yelling.The therapist devises a plan to stop his tantrums but first implements the plan at home,then the following week at school,and finally at the grandparents' home several weeks later.From a research perspective,this is an example of a(n)

Accepted Answer

This is a multiple baseline design because the therapist is implementing the plan in different settings at different times to see if the behavior change is a result of the intervention and not some other factor. The withdrawal design involves removing the intervention to see if the behavior reverts back, placebo control involves having a group that receives a fake intervention to compare to the real intervention group, and external validity design involves testing whether the results can be generalized to other populations or settings. None of these are as applicable to this situation as the multiple baseline design.

Quiz 3: Clinical Assessment, Diagnosis, and Research in Psychopathology