reliability

• what is internal reliability ?


  internal consistency demonstrated in the ey the procedure is applied and the measurements used
• what is external validity ?

  how consistent the test is over time
• how do you assess reliability ?

  inter rater, split-half method, test retest
• what is inter rate reliability ?

  measures internal validity - multiple observers independently record data and their records are compared, if they agree it is reliable
• what is split-half method ?

  internal reliability- pp complete test which is then divided into two halls and each half is scored. if the test is consistent scores will be the same
• what is test- retest ?

  external reliability- give the test to same pp on two or more occasions, if results are the same they are reliable
• how do you improve reliability ?

  increase objectivity e.g operationalise variables and standerdised procedure