To check the reliability of the research instrument the researcher often takes a test and then a retest. Homogenous audience cannot yield appropriate responses that can be applied to natural settings in day to day life. The diversity of the audience is another authentication that the testing is reliable. The audience to which the test is submitted by the researcher should have to be diverse. The researcher should interact with the respondents in a natural manner, suitable to the demands of the test. The reliability of the instrument is highly dependent on how close to nature the researcher maintained the testing situation. In artificial setting, the researcher can take a good test but that test will not be reliable. In every step in submitting and conducting the test the researcher should ensure that he is developing a natural interaction with the respondent. In short, the research environment should have to be very close to natural to make it reliable. There can be various research in which the noise, bad odors or too much cold are the independent factors that the researcher want to study, in such researches the researcher keep those factors affecting the testing environment. The external factors need to be controlled and the environment should be very comfortable and as natural as possible. There can be several other factors that can act as an extraneous factor impacting the respondents responses to the questions. There can be extraneous factors like noise, smoke, wind, cold or heat, bad odors etc. In social sciences and behavioral observations, there can be many factors that can ruin the research by introducing bias. It is important that the researcher controls extraneous factors while conducting the test. The place where the test has to be conducted or submitted is very important in maintaining reliability in the research. The physical setting or the testing environment.Such biases are introduced by the researcher himself and if the researcher is not experienced in his field, he might not know that he is introducing bias in his research instrument. Sometimes new researcher uses double-barrelled sentences and makes directional and leading questions, the respondents cannot give accurate responses if the questions have not been phrased correctly. This will also help ensure that the respondents provide true responses. The research questions in the research instrument should make the respondents think before answering them. The wording of the questions should be chosen after considering the IQ level of the audience to which the instrument has to be submitted. They should not be so difficult that no one can get a clue that what it’s all about. The test question should not be too easy so that anyone can answer them easily and without any thought. The wording of the questions in your research instrument plays a vital role in determining the reliability of the research instrument.

Instrument reliability