Lesson 4 Flashcards
can be defined as a tool
such as a questionnaire or a survey that
measures specific items to gather
quantitative data.
Instrument
used to collect basic information such
as age, gender, ethnicity, and annual
income.
Demographic forms
used to assess or rate an individual’s
ability such as achievement,
intelligence, aptitude, or interests.
Performance measures
instruments used to measure an
individual’s attitudes and opinions
about a subject.
Attitudinal measures
used to record individuals’
behaviors and are mostly used when
researchers want to measure an
individual’s actual behavior.
Behavioral Observation Checklists
Characteristics of a Good Research Instrument
Concise
Sequential
valid&reliable
easily tabulated
A research instrument is considered
valid if it measures what it is
supposed to measure.
Validity
evaluates whether a
measurement tool really represents the
thing we are interested in measuring. It’s
central to establishing the overall validity
of a method.
Construct validity
refers to a concept or
characteristic that can’t be directly observed,
but can be measured by observing other
indicators that are associated with it.
Construct
ability of the test
items to include important characteristics
of the concept intended to be measured.
Content validity
considers how suitable
the content of a test seems to be on the
surface.
Face validity
tells whether a
certain research instrument can give the
same result as other similar instruments.
Criterion validity
refers to the consistency of the
measures or results of the
instrument.
Reliability
measures the
consistency of results when you repeat the
same test on the same sample at a
different point in time.
Test Retest reliability
measures the
degree of agreement between different
people observing or assessing the same
thing.
Interrater Reliability (also called
interobserver reliability)
