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ERIC Number: EJ1057393
Record Type: Journal
Publication Date: 2015
Pages: 13
Abstractor: As Provided
Reference Count: 49
ISSN: ISSN-0022-2194
Underlying Reading-Related Skills and Abilities among Adult Learners
Mellard, Daryl F.; Woods, Kari L.; Md Desa, Z. Deana; Vuyk, M. Alexandra
Journal of Learning Disabilities, v48 n3 p310-322 May-Jun 2015
This exploratory study identified underlying skill and ability differences among subgroups of adolescent and young adult struggling readers (N = 290) overall and in relation to a fluency-based instructional grouping method. We used principal axis factoring of participants' scores on 18 measures of reading-related skills and abilities identified in the research literature to identify a smaller set of generally uncorrelated constructs. The four underlying factors of the 18 measures explained 62.7% of the variance. We labeled these factors Encode/Decode (44.5%), Vocabulary (9.5%), Processing Speed (5.2%), and Working Memory (3.5%). Regression analysis demonstrated Working Memory, Encode/Decode, and Vocabulary collectively predicted 45.9% functional reading as measured by the "Comprehensive Adult Student Assessment System." Alternatively, when measured by the "Test of Adult Basic Education," Vocabulary and Encode/Decode predicted 47.1% of variance in reading. Differences in predictive utility of the factors by fluency group suggest approaches to tailoring instruction for each group. Future research might examine the optimal mix of instructional approaches that support the identified factors.
SAGE Publications and Hammill Institute on Disabilities. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Adult Education
Audience: N/A
Language: English
Sponsor: Institute of Education Sciences (ED)
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Peabody Picture Vocabulary Test; Test of Adult Basic Education; Wechsler Adult Intelligence Scale; Wechsler Individual Achievement Test; Wide Range Achievement Test; Woodcock Johnson Tests of Achievement; Woodcock Johnson Tests of Cognitive Ability
IES Funded: Yes
Grant or Contract Numbers: R305B070-129