Question 1

(Scenario I) If the mothers of babies in both conditions reported that their children slept near perfectly at every monthly check-in, the Brief Infant Sleep Questionnaire would be demonstrating:

Accepted Answer

A ceiling effect occurs when a measure possesses a maximum limit, causing a large number of subjects to achieve the highest possible score. This can mask differences between groups or changes over time because it suggests the questionnaire might not be sensitive enough to detect variations in sleep quality among the babies.

Question 2

(Scenario III) Religiosity was the independent variable in the study described in Scenario III. Religiosity was divided into three groups based on whether the participants reported being Christian, atheist, or Muslim. The method by which religious groups were established makes this a(n) _____ study.

Accepted Answer

The method described is quasi-experimental because it involves categorizing participants into groups based on a pre-existing characteristic (in this case, their religion) rather than randomly assigning them to groups, which is a hallmark of true experimental designs.

Question 3

(Scenario II) Which of the following is a potential disadvantage to how data were collected in Scenario II?

Accepted Answer

Each choice outlines a potential disadvantage related to self-reporting methods, which can include lack of self-knowledge, social desirability bias, and retrospective bias, especially in studies involving personal or sensitive topics.

Question 4

(Scenario I) The monthly surveys mothers completed required them to answer questions about the quality of their child's sleep during the past 30 days. Which of the following issues may have affected the mothers' responses?

Accepted Answer

Retrospective bias may affect the mothers' responses because they are asked to recall and evaluate their child's sleep quality over the past 30 days, which can lead to inaccuracies in memory or interpretation of past events.

Question 5

How do research psychologists decide upon a study design?

Accepted Answer

The choice of study design in psychological research is primarily driven by the need to best test the hypothesis under investigation. Different hypotheses and research questions require different approaches to effectively gather and analyze data, making the selection of a study design a critical step tailored to the specific goals of the research.

Question 6

(Scenario III) Suppose you are a confederate of this study and become a roommate of a Christian student who reports high religiosity and appears to exhibit intergroup bias and outgroup discrimination. After living with him for some time you decide to examine the behavioral traces he leaves that may provide evidence of his intergroup bias. Which of the following behavioral traces may be MOST informative for the goal of this study?

Accepted Answer

A list of Christian-friendly and Christian-unfriendly individuals directly reflects intergroup bias and outgroup discrimination, providing clear evidence of how the roommate categorizes people based on their perceived friendliness towards his religious group.

Question 7

(Scenario III) Suppose Ken, a participant of this study, is a homosexual atheist who is not out of the closet. Understanding the culture of the university he is at, when asked about his sexual orientation he says he is a heterosexual Christian. The results of Ken's responses on the survey will likely produce:

Accepted Answer

Ken's responses introduce bias into the survey results because they do not accurately reflect his true characteristics (sexual orientation and religious beliefs), but rather are influenced by his perception of the university culture and his desire to conform to it.

Question 8

Why are self-report measures so informative?

Accepted Answer

Self-report measures are informative primarily because individuals have access to a vast amount of information about themselves that might not be observable from the outside. This includes their thoughts, feelings, intentions, and experiences, which can provide valuable insights into their psychological state and behaviors.

Question 9

In a self-report measure, participants are:

Accepted Answer

Self-report measures involve asking participants directly about their feelings, attitudes, beliefs, or behaviors regarding a particular topic. This method relies on individuals' introspection and willingness to accurately report their internal states or reactions.

Question 10

(Scenario I) The researchers in Scenario I recruited participants by taking out an ad in the local newspaper. This method of obtaining participants is most accurately described as:

Accepted Answer

This method is considered convenience sampling because the researchers are using an easily accessible group (newspaper readers) to find participants, rather than selecting from the entire population in a way that gives each individual an equal chance of being chosen.

Question 11

(Scenario I) The Brief Infant Sleep Questionnaire used in Scenario I to measure sleep quality is a(n):

Accepted Answer

The Brief Infant Sleep Questionnaire is a self-report measure because it relies on individuals (typically parents or caregivers) reporting on the sleep patterns and behaviors of infants, rather than direct observation or other methods of data collection.

Question 12

(Scenario II) Less than half of the potential participants in Scenario II agreed to complete the telephone interviews. This could potentially result in:

Accepted Answer

Nonresponse bias occurs when the individuals who choose not to participate in a study differ significantly from those who do participate, potentially leading to skewed results that do not accurately represent the larger population.

Question 13

(Scenario II) The questions the researchers in Scenario II asked participants to assess depression came from the Geriatric Depression Scale, a widely used instrument known to accurately quantify depression in the elderly population. With this information, you conclude that their assessment of depression is:

Accepted Answer

The Geriatric Depression Scale is a validated tool specifically designed to screen for depression in elderly populations, making their assessment of depression valid.

Question 14

(Scenario III) A self-report measure was used to assess religiosity. A major advantage of self-report methods is:

Accepted Answer

Self-report measures are advantageous because they are easy to administer, inexpensive and efficient, and information is obtained directly from the source, making all the options correct.

Question 15

For which study design, without direct observation, should experimenters be most concerned about demand characteristics?

Accepted Answer

Demand characteristics are most concerning in studies involving self-report measures because participants may alter their responses based on what they believe the experimenter expects to find or what they think is socially desirable.

Question 16

What is a quasi-independent variable?

Accepted Answer

A quasi-independent variable is not directly manipulated by the researcher but is treated as if it were for the purposes of the study. This often occurs in quasi-experimental designs where the variable of interest is a given condition or characteristic that cannot be randomly assigned.

Question 17

Muhammad is conducting a research study and would like to minimize the effect of social desirability bias on his results. Which of the following should he do?

Accepted Answer

Conducting the study online can help ensure confidentiality, which in turn may reduce social desirability bias because participants may feel more comfortable providing honest responses when they believe their answers are private and cannot be traced back to them.

Question 18

In designing his study, Rashad knows that he does not have to worry about social desirability bias or demand characteristics if he uses _____ assessments.

Accepted Answer

Behavioral trace assessments do not rely on participants' self-reports or awareness of the study's aims, thus minimizing the risk of social desirability bias or demand characteristics influencing the results. These assessments analyze traces of behavior, such as digital footprints or physical evidence of activities, without requiring direct interaction with the participants about their behavior.

Question 19

(Scenario II) Suppose the researchers in Scenario II obtained their sample by asking for volunteers at a local assisted living home. This method of sampling would be best described as being a:

Accepted Answer

This method is a convenience sample because the researchers are using participants who are readily available and willing to volunteer, rather than selecting participants through a random or systematic method.

Question 20

(Scenario II) If the researchers in Scenario II had measured social activity, family ties, and depression by watching participants engage with others and their family, which type of behavioral measure would they have obtained?

Accepted Answer

Behavioral observation involves directly watching and recording behaviors as they occur, which matches the description of measuring social activity, family ties, and depression by observing participants' interactions.

Quiz 4: The Psychologists Toolbox: Tools for Building Better Designs