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    • A note on the correlation of gain scores and achievement level 

      Rost, Jürgen (Instytut Psychologii ; Uniwersytet Kazimierza Wielkiego w Bydgoszczy, 2013)
      The negative correlation between gain score and initial status is one of the classical dilemmas in the measurement of change. A simple but efficient method is proposed to get valid information about the relationship between ...