Leiter-3 Assessment: Introduction and Scoring Ideology
The Leiter International Performance Scale (Leiter) was first published in 1940. It is a non-verbal intelligence test used widely among those who are hard of hearing, deaf, autistic, mentally handicapped, brain injured, intellectually superior, ESL, motor-involved, or have a speech and language deficit.
The Leiter can be used with cross-cultural applicability. While the original assessment was published for ages two through eighteen years, the revisions include expanded ages up to 75+ years, and can be used with adults who display the effects of Parkinson’s, Alzheimer’s, or Dementia. It is widely recognized as one of the most highly rated nonverbal cognitive assessments.
The Leiter assessment is operational and empirical. It is not theoretical, and it has the ability to perform nonverbal mental manipulations that are very complex and related to conceptualization, visualization, and inductive reasoning.
The administration of the Leiter-3 is easy and doesn’t require speaking from either party nor does it require reading or writing from the examinee. It is engaging and has a series of game-like tasks that help to engage the examinee. The scoring is quick and objective, so the assessment is efficient.
Contents of the Leiter Assessment
The assessment includes nonverbal problem solving, spatial perception, classification of visual stimuli, attention to visual detail, and the relationships between and among these stimuli. Memory and attention are not included, but to some extent, they are substrates that provide a foundation to test-taking performance.
The Leiter-3 takes the best of the subtests from Leiter-R and a few new measures to ensure the best possible assessment. There are ten subtests instead of twenty and items that overrepresented certain difficulty levels were removed while other scales were combined.
The attention and memory scales are intended to distinguish typical children from those who have ADHD or another neuropsychological issue. These scales enhance the interpretation of a global IQ score and help explain the scores on the cognitive scales by providing diagnostic indicators.
In addition to the cognitive scales and the attention and memory scales, the Leiter-3 includes Social-Emotional Examiner Rating Scales, allowing an examiner to track information about the test taker’s activity level, attention, organization skills, mood regulation, sociability, anxiety, energy, impulse control, sensory reactivity, and feelings.
Many experts consider fluid intelligence to be the most accurate measure of one’s innate ability. As the Leiter-3 emphasizes fluid intelligence, it is one of the most comprehensive and widely used assessments. The Leiter-3 scores are not influenced heavily by an examinee’s language skills or their social, family, or educational experience.
The scores on the Leiter-3 are expressed as scales, percentiles, and age equivalents. This helps to identify strengths and weaknesses while expressing the results in a way that makes them easy to read and understand.
The Growth Scores of the Leiter-3 reveal essential changes in examinees with cognitive disabilities. Analyzing these scores, psychologists, parents, and educators can see progress over time.
The Leiter-3 has been standardized on 1600+ individuals from diverse educational backgrounds and regions, with representations from the most current population demographics including gender, age, and ethnicity.
The Leiter-3 focuses on meaningful information regarding cognitive abilities rather than focus on a person’s deficits, providing charts that show progress and enhancements. It gives examiners the tools they need to assess an individual’s abilities in a meaningful way.
The Leiter Assessment is intended to assist in measuring the intelligence of someone who is largely nonverbal due to a variety of reasons. To purchase materials or for more information on the (Leiter-3) Leiter International Performance Scale, Third Edition, its components, or how it is scored, visit WPS Publish.