As a research-based instruction, a Vocabulary Acquisition Strategy was
intervened to provide early intervention for students at risk and to screen
students with learning disabilities, and was analyzed in terms of the effects of
the intervention process on the achievements of reading comprehension and
metacognition. With these aspects, this study focused on verifying the effects of
the Vocabulary Acquisition Strategy with scientific and systematic instructional
steps (pretest, explanation, model, controlled practice, grade-appropriate practice,
posttest, generalization) for three fifth graders at risk for learning disabilities.
As a tier 1 intervention, the subjects took highly qualified intervention for a
month in a general classroom and the Vocabulary Acquisition Strategy
intervention as a tier 2. Their mastery levels were probed every session, the
achievements of reading comprehension and metacognition were collected
before and after the intervention.
As the research results, first, students at risk for learning disabilities were not
abled to respond to the intervention upto mastery level within three months.
However, they improved to reach to the mastery level thru a month of
generalization stage. Second, they improved average of 21.3% point on reading
comprehensiont, but one student achieved below 60% point on reading
comprehension. Third, their average improvement on the metacognitive inventory
were 13% point. Some implications were discussed based upon the results.