chapter  6
10 Pages

: Current developments and future possibilities

We begin this chapter with a brief overview of the evolution in thinking that has characterized G theory development over the last 40 years or so, before moving on to describe how, and how widely, G theory has been applied in practice over the last decade. We then highlight the new focus on effect size and SEM estimation, before attempting to identify possibilities for further development of G theory, including its integration within a single unied theory of measurement.