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A teacher prepares a test for measuring socially acceptable behaviour of participants in the school programme. What type of reliability would be considered to be important ?

A teacher prepares a test for measuring socially acceptable behaviour of participants in the school programme. What type of reliability would be considered to be important ? Correct Answer Inter-rater reliability

Reliability 

  • Reliability in statistics and psychometrics is the overall consistency of a measure.
  • A measure is said to have high reliability if it produces similar results under consistent conditions. 
  • Reliability refers to the consistency of a measure.
  • Psychologists consider three types of consistency:
  1. overtime (test-retest reliability)
  2. across items (internal consistency)
  3. across different researchers (inter-rater reliability).

Methods of reliability:

  • Split-half reliability
    • In split-half reliability, a test for a single knowledge area is split into two parts.
    • Both parts are given to one group at the same time.
    • Then the scores from both parts of the test are correlated.
    • The split-half method assesses the internal consistency of a test.
  • Inter-rater reliability
    • Inter-rater reliability is the extent to which two or more raters or observers, coders, examiners agree.
    • It addresses the issue of consistency in the implementation of a rating system.
    • Inter-rater reliability can be evaluated by using a number of different statistics.
    • Inter-rater reliability is the degree of agreement among raters.
    • It is a score of how much homogeneity or consensus exists in the ratings given by various judges 

Therefore, from the above explanation, we can conclude that Inter-rater reliability is considered to be important for a teacher to prepare a test for measuring socially acceptable behavior of participants in the school program because it refers to statistical measurements that determine how similar the data collected by different raters are. A rater is someone who is scoring or measuring performance, behavior, or skill in a human or animal.

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