WWC review of this study

The Relative Effects of Group Size on Reading Progress of Older Students with Reading Difficulties [Reading intervention on word study, vocabulary, fluency, and comprehension (small group) vs. Reading intervention on word study, vocabulary, fluency, and comprehension (large group)]

Vaughn, Sharon; Wanzek, Jeanne; Wexler, Jade; Barth, Amy; Cirino, Paul T.; Fletcher, Jack; Romain, Melissa; Denton, Carolyn A.; Roberts, Greg; Francis, David (2010). Reading and Writing: An Interdisciplinary Journal, v23 n8 p931-956. Retrieved from: https://eric.ed.gov/?id=EJ893981

  • Randomized Controlled Trial
     examining 
    258
     Students
    , grades
    7-8

Reviewed: November 2021

No statistically significant positive
findings
Meets WWC standards without reservations
Passage reading fluency-silent outcomes—Indeterminate effect found for the domain
Outcome
measure
Comparison Period Sample Intervention
mean
Comparison
mean
Significant? Improvement
    index
Evidence
tier

Test of Sentence Reading Efficiency (TOSRE)

Reading intervention 1 (Wanzek & Roberts (2012)) vs. Other intervention

0 Days

Full sample: Researcher designed small group vs researcher designed large group;
258 students

86.30

85.10

No

--

AIMSweb reading maze

Reading intervention 1 (Wanzek & Roberts (2012)) vs. Other intervention

0 Days

Full sample: Researcher designed small group vs researcher designed large group;
257 students

23.50

24.50

No

--
Reading Comprehension outcomes—Indeterminate effect found for the domain
Outcome
measure
Comparison Period Sample Intervention
mean
Comparison
mean
Significant? Improvement
    index
Evidence
tier

Passage Comprehension Subtest: Woodcock-Johnson Tests of Achievement III

Reading intervention 1 (Wanzek & Roberts (2012)) vs. Other intervention

0 Days

Full sample: Researcher designed small group vs researcher designed large group;
244 students

87.70

86.70

No

--

Group Reading Assessment and Diagnostic Evaluation (GRADE): Passage Comprehension subtest

Reading intervention 1 (Wanzek & Roberts (2012)) vs. Other intervention

0 Days

Full sample: Researcher designed small group vs researcher designed large group;
258 students

86.20

86.10

No

--
Word and pseudoword reading outcomes—Indeterminate effect found for the domain
Outcome
measure
Comparison Period Sample Intervention
mean
Comparison
mean
Significant? Improvement
    index
Evidence
tier

Letter-Word Identification Subtest: Woodcock-Johnson Tests of Achievement III

Reading intervention 1 (Wanzek & Roberts (2012)) vs. Other intervention

0 Days

Full sample: Researcher designed small group vs researcher designed large group;
244 students

94.00

91.40

No

--

Test of Word Reading Efficiency (TOWRE)- Sight Word Efficiency subtest

Reading intervention 1 (Wanzek & Roberts (2012)) vs. Other intervention

0 Days

Full sample: Researcher designed small group vs researcher designed large group;
244 students

95.10

92.40

No

--

Spelling Subtest: Woodcock-Johnson Tests of Achievement III

Reading intervention 1 (Wanzek & Roberts (2012)) vs. Other intervention

0 Days

Full sample: Researcher designed small group vs researcher designed large group;
242 students

95.00

91.90

No

--

Test of Word Reading Efficiency (TOWRE)- Phonemic Decoding Efficiency subtest

Reading intervention 1 (Wanzek & Roberts (2012)) vs. Other intervention

0 Days

Full sample: Researcher designed small group vs researcher designed large group;
244 students

95.70

93.70

No

--

Word Attack Subtest: Woodcock-Johnson Tests of Achievement III

Reading intervention 1 (Wanzek & Roberts (2012)) vs. Other intervention

0 Days

Full sample: Researcher designed small group vs researcher designed large group;
244 students

95.80

95.20

No

--


Evidence Tier rating based solely on this study. This intervention may achieve a higher tier when combined with the full body of evidence.

Characteristics of study sample as reported by study author.


  • Female: 43%
    Male: 57%

  • Rural, Suburban, Urban
    • B
    • A
    • C
    • D
    • E
    • F
    • G
    • I
    • H
    • J
    • K
    • L
    • P
    • M
    • N
    • O
    • Q
    • R
    • S
    • V
    • U
    • T
    • W
    • X
    • Z
    • Y
    • a
    • h
    • i
    • b
    • d
    • e
    • f
    • c
    • g
    • j
    • k
    • l
    • m
    • n
    • o
    • p
    • q
    • r
    • s
    • t
    • u
    • x
    • w
    • y

    Texas
  • Race
    Asian
    3%
    Black
    40%
    Native American
    0%
    Other or unknown
    43%
    White
    14%
  • Ethnicity
    Hispanic    
    43%
    Not Hispanic or Latino    
    57%

Setting

The study took place in six schools across two large, urban sites in the southwestern United States. Across all schools, the student population ranged in size from 633 to 1300 students, and the rate of students qualifying for free or reduced-price lunch ranged from 56% to 86% in one site and from 40% to 85% in the other site.

Study sample

Of the 486 students included in the study, 43 percent were female, and 74 percent qualified for free or reduced-price lunch. The sample included 193 African American students (40 percent), 211 Hispanic students (43 percent), 67 White students (14 percent), 13 Asian students (3 percent), and 2 American Indian students (0.41 percent). Only 258 students were included in the analytic sample for this contrast.

Intervention Group

The study examined the effectiveness of a reading intervention for students struggling with reading. This review compares the researcher-designed small-group intervention (intervention condition) with the researcher-designed large-group intervention (comparison condition). The difference between experimental groups was the size of the group through which the reading intervention was delivered (in all other ways, the intervention and comparison conditions were identical). In this contrast, the intervention condition was implemented in groups of three to five students. Students in both the small-group intervention group and the large-group intervention group were provided the same multi-component instructional reading intervention that addressed multisyllable word reading, academic vocabulary acquisition, reading fluency, and comprehension. The experimental groups met for 45 to 50 minutes each day over the course of a full school year (from September through May). The reading intervention was composed of three phases of instruction, each of which prioritized an element of instruction and also incorporated the skills and knowledge covered in previous phases. Phase I focused on word study and fluency and vocabulary and comprehension. Phase II focused on vocabulary and comprehension and included additional instruction and practice in word study and fluency skills and strategies. Phase III continued the focus on vocabulary and comprehension and emphasized independent student application of skills and strategies.

Comparison Group

The comparison condition was the researcher-designed large-group intervention, implemented in groups of 10 to 15 students. The large-group intervention was delivered in a 50-minute class session each day throughout the entire school year using the same reading intervention as that of the intervention condition. The only difference between the two groups was the size of the groups to which the reading intervention was delivered.

Support for implementation

The researchers provided intervention teachers with approximately 60 hours of professional development prior to teaching as well as an additional nine hours of professional development related to the intervention throughout the year. Professional development hours included training on methods specific to the intervention, features of effective instruction, behavior management, and general information about adolescent struggling readers. Teachers received ongoing feedback and coaching, and there were biweekly staff development meetings.

 

Your export should download shortly as a zip archive.

This download will include data files for study and findings review data and a data dictionary.

Connect With the WWC

loading
back to top