Internal and external validity are concepts that
reflect whether or not the results of a study are trustworthy and meaningful
. While internal validity relates to how well a study is conducted (its structure), external validity relates to how applicable the findings are to the real world.
Why a trade off the relationship between the external and internal validity of experiments?
In the methodological literature regarding experiments in the social sciences, the most common argument as to why external and internal validity stand in a trade-off relationship is one about the artificiality of experiments:
because the experimental setting has been constructed by the experimenter, precisely, in order
…
What is the relationship between internal validity and external validity quizlet?
The essential difference between internal and external validity is that internal validity refers to the structure of a study and its variables while
external validity relates to how universal the results are
.
Can you have external validity without internal validity?
Lack of internal validity implies that the results of the study deviate from the truth, and, therefore, we cannot draw any conclusions; hence, if the results of a trial are not internally valid,
external validity is irrelevant
.
How can internal and external validity be increased in an experiment?
Internal validity
can be improved by controlling extraneous variables
, using standardized instructions, counter balancing, and eliminating demand characteristics and investigator effects. … External validity can be improved by setting experiments in a more natural setting and using random sampling to select participants.
What is an example of internal validity?
An example of a study with good internal validity would be
if a researcher hypothesizes that using a particular mindfulness app will reduce negative mood
.
What is the difference between internal validity and external validity group of answer choices?
Internal validity refers to the degree of confidence that the causal relationship being tested is trustworthy and not influenced by other factors or variables. External validity refers to the
extent to which results from a study can be applied
(generalized) to other situations, groups or events.
What are the threats to internal and external validity?
What are threats to internal validity? There are eight threats to internal validity:
history, maturation, instrumentation, testing, selection bias, regression to the mean, social interaction and attrition
.
What are the 12 threats to internal validity?
These threats to internal validity include:
ambiguous temporal precedence, selection, history, maturation, regression, attrition, testing, instrumentation, and additive and interactive threats
to internal validity.
How do you maintain internal validity?
- Keep an eye out for this if there are multiple observation/test points in your study.
- Go for consistency. Instrumentation threats can be reduced or eliminated by making every effort to maintain consistency at each observation point.
What is an example of external validity?
External validity is another name for the generalizability of results, asking “whether a causal relationship holds over variation in persons, settings, treatments and outcomes.”
1
A classic example of an external validity concern is
whether traditional economics or psychology lab experiments carried out on college
…
Why is internal validity more important than external validity?
Internal validity
ascertains the strength of the research methods and design
. Conversely, external validity examines the generality of the research outcomes to the real world. Internal Validity determines the extent to which the conclusion is warranted.
What factors affect external validity?
- Population characteristics (subjects)
- Interaction of subject selection and research.
- Descriptive explicitness of the independent variable.
- The effect of the research environment.
- Researcher or experimenter effects.
- Data collection methodology.
- The effect of time.
How do you determine internal validity?
Internal validity can be assessed based on
whether extraneous (i.e. unwanted) variables
that could also affect results are successfully controlled or eliminated; the greater the control of such variables, the greater the confidence that a cause and effect relevant to the construct being investigated can be found.
Which of the following best describes internal validity?
Internal validity is
the extent in which an independent variable affects the dependent variable
, rather than other confounding variables. Oc. Internal validity is the extent in which we can generalize our study results to other people, places, and settings.
Why do questionnaires lack validity?
Questionnaires are said to often
lack validity for a number of reasons
. Participants may lie; give answers that are desired and so on. A way of assessing the validity of self-report measures is to compare the results of the self-report with another self-report on the same topic. (This is called concurrent validity).
