Validation of memory error patterns on the Rey Complex Figure and Recognition Trial

The identification and use of Memory Error Patterns (MEPs) for the Rey Complex Figure and Recognition Trial is a new concept. The current series of experiments first validates the presence of MEPs using a cluster analysis, then provides base rate information on a large group of normal control participants. Finally, the MEPs of various clinical groups are examined. The findings of these studies support the presence of MEPs and the clinical rules used to identify these MEPs. Normal control participants are expected to achieve Normal/Other MEPs, whereas mild to moderately impaired participants will generally produce Retrieval or Normal/Other MEPs. In addition, severely impaired participants will produce Storage, Encoding, or Attention MEPs. The usefulness of the MEP in clinical practice is discussed.