Lesson 2 Flashcards
Characteristics of a Good Research Instrument
Concise
Sequential
Valid and reliable
Easily tabulated
Have you tried answering a very long test, and because of its length, you just pick the answer without even reading it? A good research instrument is _______ in length yet can elicit the needed data.
Concise
Questions or items must be arranged well. It is recommended to arrange it from simplest to the most complex. In this way, the instrument will be more favorable to the respondents to answer.
Sequential
The instrument should pass the tests of validity and reliability to get more appropriate and accurate information.
Valid and reliable.
Since you will be constructing an instrument for quantitative research, this factor should be considered. Hence, before crafting the instruments, the researcher makes sure that the variable and research questions are established. These will be an important basis for making items in the research instruments.
Easily tabulated.
(2)Common Scales Used in Quantitative Research
Likert Scale
Semantic Differential
This is the most common scale used in quantitative research. Respondents were asked to rate or rank statements according to the scale provided.
Example: A ______ _____ that measures the attitude of students towards distance learning.
Likert Scale.
In this scale, a series of bipolar adjectives will be rated by the respondents. This scale seems to be more advantageous since it is more flexible and easier to construct.
Semantic Differential
(5)Types of Validity of Instrument
Face Validity
Content Validity
Construct Validity
Concurrent Validity
Predictive Validity
A research instrument is considered valid if it measures what it supposed to measure.
When measuring oral. communication proficiency level of students, speech performance using rubric, or rating scale is more valid than students are given multiple choice tests.
Validity
It is also known as “logical validity.” It calls for an initiative judgment of the instruments as it “appear.” Just by looking at the instrument, the researcher decides if it is valid.
Face Validity
An instrument that is judged with c______ validity meets the objectives of the study. It is done by checking the statements or questions if this elicits the needed information. Experts in the field of interest can also provide specific elements that should be measured by the instrument.
Content Validity
It refers to the validity of instruments as it corresponds to the theoretical construct of the study. It is concerning if a specific measure relates to other measures.
Construct Validity
When the instrument can predict results like those similar tests already validated, it has __________ validity.
Concurrent Validity
When the instrument can produce results similar to those similar tests that will be employed in the future, it has ________ _______. This is particularly useful for the aptitude test.
Predictive Validity
