Importance Of Reliability Assessment

Reliability and Validity Assessment

Introduction

Reliability and Validity are often applied as a commonly in a qualitative research and it has been considered the main point of the researches. Therefore, in order to be used in a naturalistic way they would have to be redefined; in a point where there are positioned or based on positivism. When an assessment or other measuring techniques are used as the main part of the collection process, which it leads to the importance of validity and reliability of the assessment. Assessment is the main key which makes teaching into teaching, without using the assessment of what have the students learned from the lectures that were given to them- It’s

And really, its application in the world of educational assessment is not very different. A reliable car is one that you can count on to perform consistently (it always turns on). Read slide.
Ex. Thermometer that fluctuates greatly within a few minutes = not reliable. A thermometer that always reports a temperature 5 degrees higher than the actual temperature is reliable (consistent), but not valid.
Ex. 2 A reliable educational assessment will yield similar results if it is administered more than once to the same group of students (a student who scores highly on the assessment the first time is likely to score highly the second and third times).

Internal-consistency is achieved by measuring the reliability between different items using the same test. For example, in the case where a respondent expresses agreement with two different statements and disagreement with the statements that tend to oppose the first statements then there is good internal consistency of the test. Item-to-item reliability: The reliability of any single item on average (analogous to judge-to-judge reliability, which is the reliability of any single judge on average). The Item-to-item reliability is a type of reliability of any single item on average. The example would be the reliability of the two items such as the coins that are seen to be

The degree to which the conceptualization of what is being measured or experimentally manipulated is what is claimed, such as the constructs that are measured by psychological tests or that serve as a link between independent and dependent variables.
Content validity: The adequate sampling of the relevant material or content that a test purports to measure. This is a non-statistical validity and it involves a kind of systematic examination of the test's content in order to determine its coverage of the representative sample. An example is the psychological test uses a questionnaire to collect data, the content of the question are is measured to establish whether it covers all the items concerning intelligence. A given test has the content validity developed it by carefully selecting the items so as to comply with the test specifications that are drawn up by thoroughly examining the subject domain. Examples include the use of statistical means to find out from the participants if the construct was