Show 1 Answer to this question Answer: A research instrument is a tool used to obtain, measure, and analyze data from subjects around the research topic. You need to decide the instrument to use based on the type of study you are conducting: quantitative, qualitative, or mixed-method. For instance, for a quantitative study, you may decide to use a questionnaire, and for a qualitative study, you may choose to use a scale. While it helps to use an established instrument, as its efficacy is already established, you may if needed use a new instrument or even create your own instrument. You need to describe the instrument(s) used in the Methods section of the paper. For information on describing the use of instruments and requesting permission to use new instruments, you may refer to the following resources:
Answered by on 17 Feb, 2020 Resources for authors and journals
What are Research Instruments? A research instrument is a tool used to collect, measure, and analyze data related to your subject.Research instruments can be tests, surveys, scales, questionnaires, or even checklists. To assure the strength of your study, it is important to use previously validated instruments! Getting Started Already know the full name of the instrument you're looking for?
Finding a research instrument can be very time-consuming! This process involves three concrete steps: It is common that sources will not provide the full instrument, but they will provide a citation with the publisher. In some cases, you may have to contact the publisher to obtain the full text. Research Tip: Talk to your departmental faculty. Many of them have expertise in working with research instruments and can help you with this process. Developing measurement instrumentsAimDeveloping a new measurement instrument that fits your research question Requirements
Documentation
ResponsibilitiesProject leaders:
Executing researcher:
Research assistant: N.a. How ToWhen there is no instrument available that measures the construct of your interest, you may decide to develop a measurement instrument yourself. Therefore, the following steps need to be performed: Step 1: Definition and elaboration of the construct intended to be measuredThe first step in instrument development is conceptualization, which involves defining the construct and the variables to be measured. Use the International Classification of Functioning, Disability and Health (ICF) (WHO, 2011) or the model by Wilson and Clearly (1995) as a framework for your conceptual model. When the construct is not directly observable (latent variable), the best choice is to develop a multi-item instrument (De Vet et al. 2011). When the observable items are consequences of (reflecting) the construct, this is called a reflective model. When the observable items are determinants of the construct, this is called a formative model. When you are interested in a multidimensional construct, each dimension and its relation to the other dimensions should be described. Step 2: Choice of the type of measurement instrument (e.g. questionnaire/physical test)Some constructs form an indissoluble alliance with a measurement instrument, e.g. body temperature is measured with a thermometer; and a sphygmomanometer is usually used to assess blood pressure in clinical practice. The options are therefore limited in these cases, but in other situations more options exist. For example, physical functioning can be measured with a performance test, observations, or with an interview or self-report questionnaire. With a performance test for physical functioning, information is obtained about what a person can do, while by interview or self-report questionnaire information is obtained about what a person perceives he/she can do. Consider what best fits to your construct and research question and describe the rationale for the chosen method. Step 3: qualitative research: Selecting and formulating itemsTo get input for the content of the instrument, and the formulation of the items of a multi-item questionnaire you could examine similar existing instruments from the literature that measure a similar construct, e.g. for different target population, and involve patients and other experts using in-depth interview techniques, such as focus groups. In addition, you should pay careful attention to the formulation of response options, instructions, and choosing an appropriate recall period (Van den Brink & Mellenbergh, 1998). Be aware that in the case of a formative model (i.e. items form/determine the construct), it is important to be complete here: include all determinants in order to adequately measure the intended construct. Step 4: Scoring issuesThe scoring algorithm of a multi-item instrument that is based on a reflective model can be determined by means of (confirmatory) factor analysis. Multi-item instruments based on a formative model could be determined on common sense, or predictive modelling techniques. Many multi-item questionnaires contain 5-point item scales, and therefore are ordinal scales. Often a total score of the instrument is considered to be an interval scale, which makes the instrument suitable for more statistical analyses. Several questions are important to answer: How will you deal with missing values? When you are evaluating the measurement properties of an instrument, you should not impute data but only describe the amount of missings. When you are using the the instrument, you can consider multiple imputation (Eekhout et al., 2014). Step 5: Pilot studyBe aware that the first version of the instrument you develop will (probably) not be the final version. It is sensible to (regularly) test your instrument in small groups of people. A pilot test is intended to test the relevance, comprehensiveness, comprehensibility, and acceptability and feasibility of your measurement instrument. You can do this by presenting the instrument to people from the target population and asking them to rate the relevance and clarity (on a scale from 1-4) and ask whether they miss important items, or by interviewing them about the clarity and relevance of items, while responding to the instrument (a so-called ‘think aloud interview), and subsequently, ask about whether they miss important items. Make sure that you adequately process the comments and input from the pilot study in order to improve the measurement instrument. Step 6: Field-testing and validationIt is wise to perform a field-test among a larger population (than the pilot test respondents) in order to further develop and validate the instrument, including item reduction and gaining insights into the dimensionality of the items. This can be done by critically looking at the item scores (in particular search for missing data), the distribution of scores (to check for possible ceiling effects) and if items intended to cluster in a dimension indeed do so (via factor analyses). The quality of individual items could be tested by performing IRT analyses. To understand whether the test (procedure) can be improved, various reliability studies (e.g. inter- or intra rater studies, test-retest, or inter-machine studies) could be performed, to understand how the test can further be standardized or restricted. In these studies, in addiction to reliability, also the measurement error can be assessed. Further testing of the instruments could be done while starting to use the instrument (e.g. in a trial). More instructions and information on validation can be found in the section on Evaluation of measurement instrument. What is research instrument and example?A research instrument is a tool used to collect, measure, and analyze data related to your subject. Research instruments can be tests, surveys, scales, questionnaires, or even checklists.
What are measuring instruments examples?Different Types of Measuring Instruments:. Measuring Tape.. Level.. Ruler.. Pressure Gauge.. Thermometer.. Clocks.. Speedometer.. Measuring Cups.. What are the types of research instruments?A research instrument can include interviews, tests, surveys, or checklists. The Research Instrument is usually determined by researcher and is tied to the study methodology.
What is a measure in research example?Measures are the items in a research study to which the participant responds. Research measures include survey questions, interview questions, or constructed situations.
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