“…Similarly, Zelko (1991) assessed the relative contributions of three parent-completed behavior rating scales in identification of ADHD, psychiatric, and normal boys, and determined that multidimensional scales are preferable for clinical diagnostic purposes. Another approach applied by Kline, Lachar, and Boersma (1993) using the parent-completed Personality Inventory for Children (PIC; Wirt, Lachar, Klinedinst, & Seat, 1984) combined discriminant function analyses (DFA) and profiles of LD, SED, or mentally impaired youths to identify PIC scales contributing to group discrimination. A set of six hierarchical classification rules derived from DFA were developed, and cross validation indicated 90% accuracy in regular versus special education classifications, but only about 50% accuracy for specific problems (LD vs. SED).…”