Overview
The Detroit Tests of Learning Abilities – Fifth Edition (DTLA-5; Hammill, McGhee, & Ehrler, 2017) is an individually- administered, norm-referenced instrument designed to assess specific cognitive abilities for individuals 6 to 17 years, 11 months of age. It includes 12 subtests that may be combined to form 9 composites: a global composite, representing general cognitive ability; 2 domains (Reasoning Ability and Processing Ability); and 6 subdomains (Acquired Knowledge, Verbal Comprehension, Nonverbal Problem Solving, Verbal Memory, Nonverbal Memory, and Processing Speed). This system was designed as a quick, efficient tool for (a) entering test session data; (b) converting subtest item scores or subtest raw scores into scaled scores; (c) converting sums of scaled scores into composite index scores, percentile ranks, and upper and lower confidence intervals; (d) comparing DTLA-5 scores to identify significant intraindividual differences; and (e) obtaining a score summary and narrative report. Online Scoring and Report System is included with each DTLA-5 Complete Kit; it can only be scored online.
Summary
Age: 6 years to 17 years
Time to Administer: 40 minutes to 2 hours
Method of Administration: Individually administered, norm- referenced measure of specific cognitive abilities; 12 subtests form 9 composite scores
Yields standard scores (M = 100, SD = 15), subtest scaled scores (M = 10, SD = 3), percentile ranks, confidence intervals, age equivalents.
Subscales: Overall Composite: Global Composite Score
Cognitive Domain Scores: Reasoning Ability, Processing Ability
Subdomain Scores: Acquired Knowledge, Verbal Comprehension, Nonverbal Problem Solving, Verbal Memory, Nonverbal Memory, and Processing Speed
Autism Related Research
None found.