Overview - Pearson Assessments Overview of the Differential Ability Scales-Second Edition Gloria Maccow,

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  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow, Ph.D., Assessment Training Consultant

    Copyright © 2011. Pearson Inc., and/or its affiliates. All rights reserved. 1

    OverviewOverview Gloria Maccow, Ph.D.

    Assessment Training Consultant

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    AgendaAgenda

    • describe the purpose of the DAS-II;

    • describe the structure of the DAS-II and features of the subtests;

    • describe the general directions for administration; and

    • describe scoring and interpretation.

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    The AuthorThe Author

    Dr. Colin D. Elliott

  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow, Ph.D., Assessment Training Consultant

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    AuthorAuthor’’s Perspectives Perspective

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    Description of DASDescription of DAS--IIII

    • Individually administered clinical instrument consisting of 20 subtests.

    • Designed to assess cognitive abilities of children and adolescents from 2 years 6 months through 17 years 11 months.

    • Individually administered clinical instrument consisting of 20 subtests.

    • Designed to assess cognitive abilities of children and adolescents from 2 years 6 months through 17 years 11 months.

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    Purposes and UsesPurposes and Uses

    Classification The composite score can be used in making classification and placement decisions.

    Diagnostic A reliable profile of intra-individual cognitive strengths and weaknesses is needed to determine, for example, why a child is struggling to learn to read and what methods we can use to improve learning.

  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow, Ph.D., Assessment Training Consultant

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    Historical PerspectiveHistorical Perspective

    Publication of DAS-II Early Years Spanish Supplement.2012

    Publication of Differential Scales of Ability- Second Edition.2006

    Development of Differential Ability Scales [based on BAS approach] for use in the United States.

    1990

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    Structure of AbilitiesStructure of Abilities

    Early Years Battery School-Age Battery

    Core Subtests Diagnostic Subtests

  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow, Ph.D., Assessment Training Consultant

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    DASDAS--II: BatteriesII: Batteries

    3:6 – 6:11Upper Level

    2:6 – 3:5Lower Level

    2:6 2:6 -- 6:116:11Early YearsEarly Years

    7:0 7:0 -- 17:1117:11SchoolSchool--AgeAge

    AgesBattery

    EnglishEnglish and

    SpanishSpanish

    Early Years BatteryEarly Years Battery Ages 2:6 Ages 2:6 –– 3:5 (Lower Level)3:5 (Lower Level)

    Core SubtestsCore Subtests

    GCA

    Diagnostic SubtestsDiagnostic Subtests

    Verbal Comprehension Naming Vocabulary

    Picture Similarities Pattern Construction

    Recall of Digits Forward Recognition of Pictures Early Number Concepts

    Verbal Ability

    Nonverbal Ability

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    Early Years BatteryEarly Years Battery Ages 3:6 Ages 3:6 –– 6:11 (Upper Level)6:11 (Upper Level)

    Core SubtestsCore Subtests

    GCA

    Verbal Comprehension Naming Vocabulary

    Picture Similarities Matrices

    Pattern Construction Copying

    Verbal Ability

    Nonverbal Reasoning Ability

    Spatial Ability

    Supplemental Score Special Nonverbal Composite

    PSim + PCon + Mat + Copy

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  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow, Ph.D., Assessment Training Consultant

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    Early Years BatteryEarly Years Battery Ages 3:6 Ages 3:6 –– 6:11 (Upper Level)6:11 (Upper Level)

    Diagnostic SubtestsDiagnostic Subtests

    Early Number Concepts Matching Letter-Like Forms

    Phonological Processing

    Recall of Sequential Order Recall of Digits Backward

    Speed of Information Processing Rapid Naming

    School Readiness

    Processing Speed

    Working Memory

    Recall of Objects-Immediate Recall of Objects-Delayed Recall of Digits Forward Recognition of Pictures

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    Early Years BatteryEarly Years Battery Diagnostic Subtests by Age GroupDiagnostic Subtests by Age Group

    Recall of Objects-Immediate Recall of Objects-Delayed Recall of Digits Forward Recognition of Pictures Early Number Concepts

    Matching Letter-Like Forms

    Recall of Objects-Immediate Recall of Objects-Delayed Recall of Digits Forward Recognition of Pictures

    Ages 5:0 Ages 5:0 –– 6:11 only6:11 only Ages 4:0 Ages 4:0 –– 4:11 only4:11 only

    Ages 3:6 Ages 3:6 –– 3:11 only3:11 only

    Recall of Digits Forward Recognition of Pictures Early Number Concepts

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    SchoolSchool--Age BatteryAge Battery Ages 7:0 Ages 7:0 –– 17:1117:11

    Core SubtestsCore Subtests

    GCA

    Word Definitions Verbal Similarities

    Matrices Sequential and

    Quantitative Reasoning

    Recall of Designs Pattern Construction

    Verbal Ability

    Nonverbal Reasoning Ability

    Spatial Ability

    Supplemental Score Special Nonverbal Composite RDes + PCon + Mat + SQR

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  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow, Ph.D., Assessment Training Consultant

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    SchoolSchool--Age BatteryAge Battery Ages 7:0 Ages 7:0 –– 17:11 (Upper Level)17:11 (Upper Level)

    Diagnostic SubtestsDiagnostic Subtests

    Recall of Objects-Immediate Recall of Objects-Delayed Recall of Digits Forward Recognition of Pictures

    Recall of Sequential Order Recall of Digits Backward

    Speed of Information Processing Rapid Naming

    Working Memory

    Processing Speed

    Phonological Processing Note: Phonological Processing may be administered up to age 12:11 as a diagnostic subtest.

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    Early Years Record FormEarly Years Record Form

    Early Years and School-Age Battery normed for ages 5:0 – 8:11 years.

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    SchoolSchool--Age Record FormAge Record Form

    Early Years and School-Age Battery normed for ages 5:0 – 8:11 years.

  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow, Ph.D., Assessment Training Consultant

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    Early Years Spanish Record FormEarly Years Spanish Record Form

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    Median Administration TimeMedian Administration Time

    Core SubtestsCore Subtests

    Early Years (Ages 2:6-3:5) 20 min. Early Years (Ages 3:6-6:11) 31 min. School Age (7:0-17:11) 39 min.

    Diagnostic SubtestsDiagnostic Subtests

    Working Memory 12 min. Processing Speed 9 min. School Readiness 17 min.

    Test Materials p. 14 ADM. Manual

  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow, Ph.D., Assessment Training Consultant

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    DASDAS--II KitII Kit

    Training and Phonological Processing Audio CD (For Examiner Use Only)

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    DASDAS--II Early Years II Early Years Spanish Supplement KitSpanish Supplement Kit

    – Administration and Technical Manual.

    – DAS-II Early Years Spanish Supplement Stimulus Book.

    – DAS-II Early Years Spanish Supplement Record Forms (25).

    – DAS-II Early Years Spanish Supplement Interpreter’s Handbook.

    – DAS-II Early Years Spanish Supplement Recall of Objects Card.

    – Phonological Processing and Training CD.

    General Information Battery Selection Subtest Selection

  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow, Ph.D., Assessment Training Consultant

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    Battery and Subtest Selection p. 23 ADM and on RF

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    Battery and Subtest Selection p. 23 ADM

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    Subtest Administration Item Sets

    Basal and Ceiling Fixed Start Point and Discontinue Rule

  • Overview of the Differential Ability Scales-Second Edition Gloria Maccow,