Research Examples: Reading Study

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The overall purposes of this research study were to examine the efficacy of Tier 2 first-grade tutoring as an approach to improve reading performance and preclude reading disability (RD), to assess RD prevalence and severity as a function of method with and without instruction, and to explore the pretreatment cognitive abilities associated with reading development.

Design of study

Sixteen elementary schools within two school districts in the Nashville, Tenn., area participated in this study. Eight of the schools were Title I and eight were non-Title I. In the fall, students within 42 first-grade classes were screened using the Rapid Letter Naming (RLN) portion of the Comprehensive Test of Phonological Processing (CTOPP), Curriculum-Based-Measurement (CBM) Word Identification Fluency (WIF), and teacher judgment. Six students per class--those scoring the lowest on one or both measures and judged by the teacher to be low--were designated as "low study entry." They were then rank ordered and split into top and bottom strata. These low performers were randomly assigned to one of three conditions:

  1. Tier 1: Fall Tutoring (n = 84)
  2. Tier 2: Spring Tutoring (if unresponsive to fall instruction) (n=84)
  3. Control (n=84)

Students who were assigned to Fall Tutoring were immediately placed into Tier 2. Those assigned to Spring Tutoring remained in Tier 1 only during the fall semester. Their progress in general education during the first semester was monitored with CBM-WIF; only students whose progress was inadequate in general education then received tutoring in the spring semester. Specifically, weekly WIF data were collected for nine weeks to monitor the progress of the students assigned to the Spring Tutoring group. The dual discrepancy method (WIF slope and level) was used to identify those students who were unresponsive to Tier 1 general education instruction during the fall and proceeded to Tier 2 tutoring in the spring. The students assigned to Control remained in Tier 1 (general education) throughout the study.

A battery of standardized reading tests was administered to all students at the beginning of the year, mid-year, and end of first grade and again at the end of second, third, and fourth grades.

Reading intervention

For Tier 2, Vanderbilt used a standardized, research-based preventive tutoring protocol that consists of the following elements:

  • Small groups (two to four students)
  • Conducted for nine weeks, three to four sessions per week, with 45-60 minutes per session
  • Conducted by trained and supervised personnel (not the classroom teacher)

The following research-based elements of instruction were used:

  • Point system for motivation
  • Immediate corrective feedback
  • Mastery of content before moving on
  • More time on difficult activities
  • More opportunities to respond
  • Fewer transitions
  • Setting goals and self-monitoring
  • Special relationship with tutor

Students were placed in small groups of two to four and received instruction outside of the general education classroom four times per week for nine weeks. They completed a total of 36 sessions (64 lessons), which lasted 45 minutes each. Each tutor-led instruction session was broken down into the following:

  • 10 minutes of sight word practice
  • 5 minutes of letter sound practice
  • 15 minutes of decoding practice
  • 15 minutes of reading fluency practice

Each lesson was scripted for the tutors with detailed steps, as well as exact wording of the instructions to be provided to the students. Steps for the sight word, letter sound, and decoding practice were the following:

  • Introduction of new sound or word
  • Choral practice
  • Individual practice
    • Two opportunities to produce correct sounds or words
  • Writing practice

Steps for the reading fluency practice were the following:

  • Choral reading of previous story:
    • Echoing the tutor, one line at a time
    • Choral reading of story
  • Choral reading of new story:
    • Echoing the tutor, one line at a time
    • Choral reading of story
  • Individual speed reading:
    • Each student reads a new story three times for 30 seconds
    • Opportunities are provided to earn incentives for increasing fluency

Each day, the students' mastery of the topic was assessed. If every student in the group achieved mastery of the sight words on the first day of that set, the group moved to the next set on the following day. Each student had two trials to master the sight words during the session. The group progressed to the next set regardless of the students' mastery status after two sessions on the same set. This ensured that the group would be able to cover more words and sounds.

Fidelity of implementation

During the initial training, tutors became accustomed to receiving feedback from the trainers regarding their implementation of the reading and math interventions. They received feedback on the accuracy with which they followed the steps for instruction and feedback that they provided to their students. Every session was audiotaped. These tapes were randomly sampled to systematically represent tutors and tutoring groups. Using checklists that delineated the steps and actions the tutor was supposed to be implementing, fidelity was quantified. Fidelity was documented as strong.

Results

At the end of first grade, the effects of Tier 2 tutoring on students' reading performance was assessed, showing that tutoring improved outcomes on word identification, reading fluency, and comprehension. In addition, fewer students who had received Tier 2 tutoring were identified with a reading disability (RD), compared to students in the control group. In addition, results showed that the proportion of students who were identified as having an RD varied as a function of the procedure by which unresponsiveness to Tier 2 was determined, with some procedures functioning better than others. Important cognitive predictors of outcome included phonological awareness, teacher ratings of student behavior and attention, and language ability.