Reliability, Validity, Generalisability and Credibility

Reliability, Validity, Generalisability and Credibility

1. Shipman's 4 key questions about the quality of research

   • 1
     • if investigation had been carried out again by different researchers using the same method, would the same results have been obtain?
       • Reliability
         • Types of reliability
           • test-retest
           • parallel forms
           • inter-rater
           • Internal consistency
   • 2
     • Does the evidence reflect the reality under investigation? Has the researcher found out what he/she thinks or claims it's about?
       • Validity
         • Types of Validity
           • face validity
           • Construct Validity
           • criterion-Related validity
           • Formative Validity
           • Sampling Validity
   • 3
     • What relevance do the results have beyond the situation investigated?
       • Generalisability (External Validity)
         • Threats to External Validity
           • Aptitude
           • situation
           • Pre-test effects
           • Post-test effects
   • 4
     • Is there sufficient detail on the way the evidence was produced for the credibility of the research to be assesed?
       • Credibility
         • Internal Validity
           • Believable
           • Consistent
           • Systematic
           • Evidence