17 Questions
Which type of variable is influenced by an attributed variable b?
Dependent variable
In the study of the effects of medication and tactile stimulation on the pain experienced by cancer patients, what type of variable is pain?
Dependent variable
Which type of variable is influenced by an independent variable?
Dependent variable
Which of the following best describes the meaning of nursing research?
A systematic and rigorous process of finding answers to questions
What is the typical range of words in the abstract section of a research paper?
Between 50-250
Which type of variable doesn't preexist and needs to be created by the researcher?
Active variables
What type of variable is often inherent, such as blood type?
Attribute variables
Which kind of variable can confound the relationship between dependent and independent variables?
Extraneous variables
What is the term for when an attribute is extremely varied in the group under study?
Heterogeneity
When members of a group are highly similar with respect to a variable, it is known as:
Homogeneity
Which type of variable represents attributes of subjects collected for sample description, like age?
Demographic variables
Which of the following best describes a dependent variable?
A variable that is measured and varies due to changes in an independent variable
What is the primary characteristic of an independent variable?
It is the variable that is manipulated or controlled by the researcher
If a variable influences the dependent variable but is not the independent variable, it is referred to as:
An extraneous variable
What is the relationship between independent and dependent variables?
Independent variables precede and influence dependent variables
Which statement about research is true?
Research is a systematic inquiry that uses disciplined methods to answer questions or solve problems
What is the primary role of a dependent variable in research?
To act as the presumed effect or outcome that is measured and observed
Study Notes
Variables
- Active variables: Don't preexist, created by the researcher
- Attribute variables: Often inherent, such as blood type
- Extraneous variables: Can confound the relationship between dependent and independent variables, need to be controlled
- Demographic variables: Attributes of the subject, collected to describe the sample, such as age
Dependent and Independent Variables
- Independent variable: Presumed cause, controlled, and manipulated
- Dependent variable: Presumed effect, measured, and changed
Characteristics of Variables
- Dependent variable: Measured, not manipulated, and varies at an unknown rate
- Independent variable: Controlled, manipulated, and intentionally changed
Types of Influences
- Confounding variable: Exerts influence on the dependent variable, but is not an independent variable
- Influencing variable: Exerts influence on the dependent variable, not an independent variable
Research Concepts
- Concept: A linguistic label assigned to objects or events through observation
- Construct: A concept deliberately invented by a researcher for a specific purpose
- Theory: Relationships among phenomena
Research Methods
- Critical reading: A skill that involves preliminary, comprehensive, analysis, and synthesis steps
- Critical appraisal: Evaluates the strengths and weaknesses of research
Abstract
- A short, comprehensive summary of a study at the beginning of an article
- Typically 50-250 words, includes background, purpose, design, methods, results, conclusions, recommendations, and key words
Test your understanding of dependent and independent variables with this quiz. Explore questions related to characteristics and control of variables in research experiments.
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