The grid method, developed by Kelly (1955), is supposed to provide meaningful measurements of the relations between the constructs that any individual uses. In this study an attempt has been made to assess the validity of this claim within the area of public constructs (or dictionary meaning) rather than within the more complex domain of personal or private constructs. The adequacy of the grid method in objectifying meaningful construct relations, changes and stability is examined. Thirteen medical students acted as subjects. From a total of 61 predictions, all but 4 were fully confirmed. The results therefore tend to support claims for the grid's possible usefulness in relation to each of the three functions examined.