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A Review of the Universal Nonverbal Intelligence Test (UNIT)

The Universal Nonverbal Intelligence Test (UNIT) is reviewed and critiqued. The UNIT is a completely nonverbal test that can be administered as an Abbreviated or Screening Battery, a Standard Battery for special education eligibility decisions, or as an Extended Battery for diagnostic purposes. Standardization was on a sample of 2,100 youths. Psychometric properties are adequate. Considerable data are presented in the manual that illustrates the appropriateness of this measure with an array of populations. The UNIT was developed to meet the needs of those who cannot be appropriately assessed using verbal methods. Clinical experience suggests that the authors realized their goal and that the UNIT is an instrument that should be used by practitioners and researchers. The main criticism of the UNIT is that it is less 'user-friendly' than optimal and it may, even for the experienced test administrator, require additional time to become proficient in its use. Interpretation procedures are similar to other cognitive measures currently available. Implications for school psychology practice and research are discussed.