The Experimenter should write out the alphabet backwards in order to aid him in catching the mistakes of the Subject.

The Ex- perimenter will not prompt the Subject except to say, "No," when the Subject gives a wrong letter.

As before, the Experimenter will record (a) the time required by the Subject to recite the alphabet backwards, (&) any mistakes in doing so, (c) any changes in method, (d) any other interesting facts.

If possible both partners should arrange to prepare the assign- ment together.

If this is not possible, then the Subject should secure a copy of the Experimenters notes.