Leiter-3

Cognitive Scales (Fluid Intelligence)

Unlike other IQ tests, the Leiter-3 emphasizes fluid intelligence, the truest measure of an individual's innate cognitive abilities. This makes the Leiter-3 more accurate and fair, since IQ is not significantly influenced by the individual's educational, social, and family experience.

• Sequential Order (SO)
• Form Completion (FC)
• Classification and Analogies (CA)
• Figure Ground (FG)
• Matching/Repeated Patterns (M/RP)- optional

Attention and Memory Scales

Attention and Memory subtests enhance interpretation of the global IQ score, by providing valuable diagnostic indicators regarding the score on the Cognitive portion of the Leiter-3. They also distinguish individuals with ADHD, LD or neuropsychological impairments, from typically-functioning individuals.

• Forward Memory (FM)
• Attention Sustained (AS)
• Reverse Memory (RM)
• Nonverbal Stroop (NS)
• Attention Divided (AD)

Examiner Rating Scale

The Social-Emotional Examiner Rating Scale gathers information about the individual's:

• Attention
• Organization Skills
• Impulse Control
• Activity Level
• Anxiety
• Energy and Feelings
• Mood Regulation
• Sociability
• Sensory Reactivity

The Leiter-3 comes as a kit with supplemental handscored booklets or unlimited use scoring software. It provides individual subtest and numerous composite scores that measure intelligence and discrete ability areas. These scores identify strengths and weaknesses in individual skills, as well as skill sets. Percentile and age-equivalent scores are provided. Growth Scores are provided for all domains, enabling professionals to measure small but significant cognitive shifts within a skill set, particularly important for children with cognitive disabilities. Tracking these shifts allows professionals, educators, and parents to see improvement (growth) across time, irrespective of age-based standard scores.

The normative data sample includes more than 1,600 individuals, representative of the most current general population data in terms of ethnicity/race, gender, and age. The normative sample is also diverse in terms of parent/self education level and geographical region.