The most empirically grounded and practice-transforming edition of Cross-Battery Assessment to date, now available together with the latest Cross-Battery Assessment Software System

The Fourth Edition of Essentials of Cross-Battery Assessment and X-BASS delivers a comprehensive scientific update to the XBA framework and its application to SLD identification and nondiscriminatory assessment. This edition incorporates a large-scale meta-analytic database used to program X-BASS 3.0—spanning hundreds of correlation matrices, thousands of subtest-level coefficients, and data from more than 200,000 examinees—to provide unprecedented precision in composite estimation, score-cohesion evaluation, and cross-battery interpretive accuracy. Combined with updated CHC classifications and a rigorous re-evaluation of over 1,000 subtests across major cognitive, achievement, language, and neuropsychological batteries, this edition offers the most transparent and defensible cross-battery interpretive system to date.

Also included in this set is the Cross-Battery Assessment Software System (X-BASS) Version 3.0. It provides school psychologists and other assessment professionals with efficient, expert analysis of within-battery and cross-battery assessment findings for a variety of purposes. Ensures psychometrically and theoretically defensible assessment and interpretation. All batteries included in X-BASS are classified according to the most current CHC taxonomy. Guidance regarding follow up assessment is provided throughout X-BASS 3.0 to ensure that follow up assessment is conducted when necessary.