When we fall into the trap of believing that terms have real meanings we are guilty of:
reification
.
When one defines a concept by specifying how it will be measured what definition has he or she created quizlet?
When one defines a concept by specifying how it will be measured, what definition has he or she created?
Operational definition
.
Theoretical creations that are based on observations
but that cannot be observed directly or indirectly are known as. Constructs.
What does the question of internal validity refer to quizlet?
In an experiment, internal validity refers to
whether changes in the DV can be attributed to the manipulation of the IV rather than other sources of error (confounding variables)
. What can internal validity be threatened by?
Which of the following describes whether a measure adequately reflects the real meaning of the concept construct under consideration?
Validity
refers to the extent to which an empirical measure adequately reflects the real meaning of the concept under consideration. … Predictive validity is often used as another term for criterion-related validity.
When a researcher is selecting items for a composite index which of the following should be kept in mind?
When a researcher is selecting items for a composite index, which of the following should be kept in mind?
Each item should have face validity
. A composite measure should be uni-dimensional. There should be concern about the amount of variance provided by the items.
Why is so important that variables be fully operationalized?
In quantitative research, it's important to precisely define the variables that you want to study. Without transparent and specific operational definitions, researchers may measure irrelevant concepts or inconsistently apply methods. Operationalization
reduces subjectivity and increases the reliability of your study
.
What are the two important qualities for variables?
Every variable must have two important qualities. what are these? –
The attributes composing it should be exhaustive. -Attributes must be mutually exclusive.
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
.
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.
What affects internal validity?
The validity of your experiment depends on your experimental design. 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 3 types of measurement?
The three standard systems of measurements are
the International System of Units (SI) units, the British Imperial System, and the US Customary System
. Of these, the International System of Units(SI) units are prominently used.
Is some specifiable aspect of a concept?
–
dimensions
– defined p. 126 – are specifiable aspects of a concept. – operationalization – is the development of specific research procedures (operations) that will result in empirical observations representing those concepts in the real world.
What are examples of constructs?
What is a Construct?
Intelligence, motivation, anxiety, and fear
are all examples of constructs. In psychology, a construct is a skill, attribute, or ability that is based on one or more established theories. Constructs exist in the human brain and are not directly observable.
What do indexes and scales have in common?
Scales and indexes have several similarities. First, they are
both ordinal measures of variables
. That is, they both rank-order the units of analysis in terms of specific variables. … Both scales and indexes are composite measures of variables, meaning that the measurements are based on more than one data item.
Which type of validity is used to select items for an index?
Which type of validity is used to select items for an index?
Face validity
means, on the surface, the item must be logical and the quality of the measure seems reasonable. What are the two decisions to be made in deciding how to score an index?
How well a measure covers the range of meanings included within a concept?
Content validity
refers to the degree to which a measure covers the range of meanings included within: a concept. What is the vaguest sense of a term?
