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Exhaustive Categories
Exhaustive categories in a survey item provide enough options to cover all possible responses a participant might make. Since it is often impossible to list every potential answer for a categorical variable, researchers frequently include an 'Other' option with a blank space to ensure the categories remain exhaustive.
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Research Methods in Psychology - 4th American Edition @ KPU
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Mutually Exclusive Categories
Exhaustive Categories
Examples of Categorical Variables
Dummy Variable
Which statement best describes a categorical variable in psychological research?
If a researcher assigns the number '1' to 'Receiving Psychotherapy' and '0' to 'Not Receiving Psychotherapy,' the variable is still considered categorical because the numbers serve as labels rather than representing a numerical quantity.
A researcher investigating different treatments for depression records whether each participant receives 'Cognitive Behavioral Therapy,' 'Interpersonal Therapy,' or 'No Treatment.' Because these categories are descriptive labels used to classify participants rather than numerical measurements, the researcher is measuring a(n) ________ variable.
In psychological research, variables must be analyzed to determine if they represent quantities or qualitative characteristics. Match each research variable with the analytical reasoning that justifies its classification as a categorical variable.
A researcher is determining whether the variable 'Type of Psychotherapy' should be classified as categorical in their clinical study. Arrange the steps of the researcher's evaluative process in the logical order required to justify this classification.
Which of the following is an example of a categorical variable as defined in psychological research?
In psychological research, variables are classified based on the nature of the information they provide. Match each term associated with categorical variables to the statement that best describes its conceptual role or meaning.
A researcher studying occupational stress records each participant's job title (e.g., 'Teacher,' 'Nurse,' 'Engineer') and then computes the arithmetic mean of those job titles to summarize the group. This approach is appropriate because job title is a categorical variable.
A researcher records each participant's declared academic major (e.g., Psychology, Biology, Engineering). Because academic major assigns descriptive category labels rather than ordered or numerical scores, the researcher correctly identifies the _____ level of measurement and reports frequency counts rather than a mean.
A researcher wants to include the variable 'Employment Status' (Employed, Unemployed, Student) as a predictor in a multiple regression model. Arrange the following steps in the logical order that best reflects sound research-methods reasoning for incorporating a categorical variable into regression.
Define what a categorical variable is in psychological research, explain how it is typically assessed, and state the types of examples provided in the textbook context.
Explain why the variable 'job sector' in this scenario is classified as a categorical variable. How does this classification align with the definition of assessing qualities rather than numbers?
A clinical psychologist is tracking patients and records their age (in years), their current occupation (e.g., 'Teacher'), and whether they are receiving psychotherapy (e.g., 'Yes' or 'No'). Identify which of these variables are categorical variables, and briefly apply the definition to justify your choice.
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What does it mean for response categories in a survey to be exhaustive?
A researcher measuring religious affiliation finds it impossible to list every religion in the world; therefore, they cannot create a set of response categories that are exhaustive.
A researcher is developing a survey for a study on campus life and psychological well-being. Match each set of response categories with the correct evaluation of its exhaustiveness.
A psychology researcher measuring 'Preferred Study Location' provides the following response options: 'University Library,' 'Home,' and 'Local Coffee Shop.' During a pilot test, several participants note that they cannot answer accurately because they primarily study in 'Empty Classrooms.' By failing to provide an option for every possible location used by the student population, the researcher has created a set of categories that are not __________.
A researcher is critiquing various drafts of a survey question regarding 'Primary Mode of Commuting.' Rank the following response sets from the least exhaustive (worst at covering all possible responses) to the most exhaustive (best at covering all possible responses).
You are constructing a new demographic survey item to measure 'Primary Language Spoken at Home' for a study in a highly diverse urban center. To ensure the categories you create are exhaustive according to psychological research standards, which of the following strategies should you implement?
Match each term related to survey research with its correct definition.
A psychology researcher wants to measure the categorical variable 'preferred counseling modality' in a clinical study. They list three options: 'In-person,' 'Video-call,' and 'Text-based.' Since these represent the vast majority of counseling formats, this set of response categories is considered exhaustive under survey construction standards.
A researcher constructs a survey question asking students, 'What is your primary source of academic stress?' and provides the options: 'Coursework,' 'Exams,' and 'Financial concerns.' During analysis, the researcher realizes that students who experience stress primarily due to relationship issues or health problems have no appropriate option. To resolve this measurement issue and ensure the response categories cover all possible participant responses, the researcher should add a(n) '_____' option with a blank space.
Order the following response option sets for a survey question asking, 'What is your primary mode of transportation to campus?' from least exhaustive (1) to most exhaustive (3).