quiz 2 Flashcards
concepts
idea or mental representations of things, they are categories for the organization of ideas and observations
conceptualization
is the process of defining the concepts that one employs in one’s research - specifying the meaning of something for research
operationalization
is the process of determining how one will measure a concept through one’s research
nomothetic explanations
what are the three criteria of causation
involve attributions of cause and effect, expressed in terms of general laws and principles
- typically quantitative
- correlation
- time order
- non-spuriousness
idiographic explanation
involve a rich description of a person or group and seek to explain the particular
typically qualitative
- not meant to apply to persons or groups who were not part of the study
reliability
- what are its three different meanings
concerned with the consistency of measures
1. stability over time
2. internal reliability
3. inter-observer consistency.
reliability
(stability over time)
whether the results of a measure fluctuate as time progresses assuming that what is being measured is not changing
- can be measured using the test-retest method
- it is extremely difficult to quantify stability over time because of the number of factors that may come into play over the passage of time
reliability
(internal consistency)
whether multiple measures that are administered in one sitting are consistent
reliability
(inter-observer consistency)
all observers should classify behaviour or attitudes in the same way
- two researchers looking at the same study should agree
measurement validity
and the four kinds
concerned with whether one is measuring what one wants to measure
1. face validity
2. concurrent validity
3. construct validity
4. convergent validity
explain face validity
established if at first glance the measure appears to be valid
explain concurrent validity
established if the measure correlates with some criterion thought to be relevant to the concept
a lack of correlation brings some doubt onto the validity (correctness) of the original measure
construct validity
established if the concepts relate to each other in the way that is consistent with the researcher’s theory - confirmed by seeing that the results match what would be predicted given the theory
convergent validity
established if a measure of a concept correlates with a second measure of the concept that uses a different measurement technique
what are the levels of measurement
nominal
ordinal
interval
ratio
nominal
a variable comprised of categories that cannot be ranked
ordinal
a variable whose categories can be ranked in order but the distance between the categories is not equal or known across the range
interval
a variable for which the intervals between categories are identical and quantifiable
ratio
an interval variable with a true zero point
units of analysis
the things that are the object of a study’s attention (individuals, organizations or groups, social artifacts
unit of observation
the kinds of objects from which evidence is collected
in the research example how did they measure school quality
average of percent on standardized testing