What is the limitation that affects the generalizability of research results?
Small sample size
. Dr. Matter is interested in knowing more about brain injury to the occipital vortex, and he studies patients individually in order to gain in-depth knowledge about their behaviors.
What is a variable that affects both variables of interest?
confounding variable
. unanticipated outside actor that affects both variables of interest, often giving the false impression that changes in one variable causes changes in the other variable, when, in actuality, the outside factor causes changes in both variables.
What is the limitation that affects the generalizability?
What is the limitation that affects the generalizability of research results?
Small sample size
.
What is the tendency to ignore evidence that disproves ideas or beliefs?
| Term archival research Definition method of research using past records or data sets to answer various research questions, or to search for interesting patterns or relationships | Term confirmation bias Definition tendency to ignore evidence that disproves ideas or beliefs |
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Is the ability to consistently produce a given result?
Reliability
refers to the ability to consistently produce a given result.
What limits the generalizability of a study?
How Generalizable are these Results? The generalizability of this study is limited by
the characteristics of the study participants
. … These differences may limit the generalizability of the study to older populations, or, in other words, the results may not apply to older adults.
Is a reduction in the number of research participants?
Explanation:
Attrition
refers to the participants leaving the research study due to different reasons. Here, it must be clarified that attrition happens in almost every research. Also, attrition happens only when the participants leave themselves and not when they are removed by the researchers.
What is the variable of interest in the study?
Variable of interest, in an experimental study,
a changing quantity that is measured
. One or more of these variables, referred to as the factors of the study, are controlled so that data may be obtained about how the factors influence another variable referred to as the response variable, or simply the response.
What are the 3 types of variables?
These changing quantities are called variables. A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables:
independent, dependent, and controlled
.
What is the difference between the variables of interest and control variables?
A control variable is any variable that’s held constant in a research study. It’s not a variable of interest in the study, but it’s controlled because it could influence the outcomes. … Researchers often model control variable data along with independent and dependent variable data in regression analyses and ANCOVAs.
What is simply expecting something to happen can make it happen?
The placebo effect
occurs when people’s expectations or beliefs influence or determine their experience in a given situation. In other words, simply expecting something to happen can actually make it happen. The placebo effect is commonly described in terms of testing the effectiveness of a new medication.
What is a major advantage of case studies?
Strengths of Case Studies
Provides detailed (rich qualitative) information
. Provides insight for further research. Permitting investigation of otherwise impractical (or unethical) situations.
What is a graphical view of the strength and direction of a correlation?
A scattergram
is a graphical display that shows the relationships or associations between two numerical variables (or co-variables), which are represented as points (or dots) for each pair of score. A scattergraph indicates the strength and direction of the correlation between the co-variables.
What is the only way to establish a cause-and-effect relationship between two variables?
As you’ve learned, the only way to establish that there is a cause-and-effect relationship between two variables is
to conduct a scientific experiment
. Experiment has a different meaning in the scientific context than in everyday life.
Which of the following is characteristic of an independent variable?
The independent variable is the variable
the experimenter manipulates or changes
, and is assumed to have a direct effect on the dependent variable.
What is a well developed set of ideas?
A theory
is a well-developed set of ideas that propose an explanation for observed phenomena that can be used to make predictions about future observations. A hypothesis is a testable prediction that is arrived at logically from a theory.
