The Effect of Scaffolding on the Vocabulary Improvement of EFL Iranian Language Learner

This study investigated the effectiveness of scaffolding on knowledge of the vocabularies of Iranian EFL language learners. The purpose of this study was to see whether scaffolding is effective for learners or not. The participants were 22 EFL students from Bandar Abbas.11 students were in control group and 11 students were in experimental group. The study was an experimental, preposttest control group design. Students were randomly assigned to form a treatment group and a control group. The results from the ANCOVA reveal that prior English oral vocabulary knowledge predicted student’s success during the vocabulary scaffolding intervention, and scaffolding has positive effects on learning vocabulary. The current study has several practical and scientific implications. For instance, the scaffolding intervention program is useful for teacher education or professional development programs, as well as EFL learners. Keywords— Scaffolding, Vocabulary, EFL.


INTRODUCTION
According to Van American state politico, Volman and Beishuizen (2010,p.274),staging refers to "support given by a lecturer to a student once activity a task that the coed would possibly otherwise not be able to accomplish." it's the temporary support given to students severally or together to complete a task they can't do while not steerage (Graves, Watts, & Graves, 1994).Like physical staging, this support is incrementally removed once it's now not necessary, and therefore the teacher step by step shifts additional responsibility to the learners (Poorahmadi, 2009).What they're expected to grasp.The teacher would possibly use it to maneuver students' learning and understanding one leap forward or to scale back the negative emotions that students could expertise whereas trying to complete a difficult task without assistance.This study compares the effect of scaffolding on Iranian undergraduate EFL students' vocabulary retention at the individual and small group levels.Weir (1993) discussed that reading could be seen as a discerning process between reader and text, involving the reader's background knowledge and a wide range of language knowledge in order to comprehend the text.In this case, readers activate their knowledge to predict and interpret the text they read, rather than reading all the words within the text.Therefore, the readers play an important role in constructing meaning related to the text.Smith and Burns (2005) believe that reading is a complicated activity involving many variables related to reader, textual, and contextual aspects.In this sense, reading is not only a receptive activity to collect information, but also an interactive activity to interpret, analyze, and predict meaning from the text (Myers & Palmer, 2002).In an EFL reading activity, we may assume that comprehensible input from the text has a powerful effect on improving students' comprehension.In this sense, more comprehensible vocabulary in the text will make it easier to be comprehended by readers.However, what is comprehensible input for one reader may be partially or totally incomprehensib le for others.In line with the views just presented, the current study will consider and characterize reading comprehension as a dynamic productive activity process that aims to understand, predict, and interpret the meaning of the text in order to arrive at comprehension.The reader is an active participant who has a central role as an interpreter of the text.Reading comprehension needs the employment of methods before, during, and after reading.Strategies can be defined as a purposeful activity that readers take to construct and enhance their comprehension (Jimenez, Garcia, & Pearson, 1996; Pritchard & O'Hara, 2008).Therefore, a reading comprehension strategy is seen as "a psychological feature or activity action that's enacted beneath specific discourse conditions, with the goal of up some side of comprehension"(Graesser, 2007, P. 6).As people learn to read in the first language, they use particular strategies in reading for specific purposes.Once they know how to activate and effectively use a set This assumption is part of the studies conducted in this dissertation.

Research Hypothesis
In order to probe the research questions, the following hypothesis was formulated: H1: Scaffolding is effective for knowledge of vocabulary of Iranian EFL language learners.

II. METHODOLOGY
The study was an experimental, pre-posttest control group design.Students were randomly assigned to form a treatment and a control group.Using a pretest-posttest control-group design allowed the researcher to attribute posttest change in the treatment group, beyond that of the control group change, to the intervention (Gall, et al., 2007).

Participants
The participant population of this study was determined as the 22 EFL students in Bandar Abbas, Iran.They are both male and females.

Procedure Testing Procedures
All students were tested by the researcher.Students were assessed individually during the pretest for the Peabody Picture Vocabulary Test.Students were assessed in small groups for the English Tier Two Vocabulary Assessment and the comprehension measure.After the intervention, students were assessed on the English Tier Two Vocabulary Assessment, comprehension measure, and the social validity survey.

Intervention Procedures
Students in both the treatment and control groups met with the researcher daily for the duration of the study.The students were on block scheduling and have three blocks per day.Therefore, the researcher created both a treatment and a control group for each block, making a total of six small group sessions a day.Students met with th e researcher for 10-15 minutes a day and received Tier Two vocabulary instruction using either vocabulary scaffolding intervention or the comparison, definitional intervention.

III. RESULTS
The treatment and control groups were assessed for pretest differences on the ETTVA and comprehension assessments.A one way ANOVA revealed no significant difference between the treatment and control groups at the time of pre assessment or the ETTVA F (1,22) = 69, p = .42.A one way ANOVA revealed no significant difference for the treatment and control groups on the comprehension measure, F (1,22) = 1.21, p = .28.Pre and posttest means and standard deviations are reported in Table 1.A family wise alpha of .05 was used with the Bonferroni method to determine significance for all of the statistical analyses in order to control the error rate.Both the treatment and control groups were pre assessed and post assessed using the ETTVA and comprehension measure.Scores for these assessments were analyzed using ANOVA to address the hypotheses.For comprehension hypothesis, results of the ANOVA revealed that there was no group effect on comprehension: F (1, 22) = .208,p = .652,observed power = .072.ANOVA revealed a significant difference between pretest and posttest, F (1, 22) = 7.324, p = .013.After students participated in the intervention, they were administered a survey to determine their feelings regarding the intervention.The results from the student responses to the post intervention survey are listed in Table 3. From an affective perspective, students in the study enjoyed participating.A large majority of students (100%) in both the treatment and the control group felt they learned a lot during the study's duration.A majority of students (95.83%) enjoyed being a part of the study, and a majority of students (83.33%) felt they would be willing to participate in a study like this again.So, the results of this nature indicate that students were motivated to participate in both the treatment and the control conditions.
IV. DISCUSSION Regarding the research question, this study was an attempt to determine whether scaffolding is effective for learning students or not.It also increases the Tier Two academic vocabulary knowledge of Iranian EFL students.The researcher also hoped to increase th e comprehension levels of students by providing intervention in Tier Two academic vocabulary.According to the results, students in the vocabulary scaffolding treatment group demonstrated more growth on ETTVA than those in the definitional control group.This result confirms that the use of vocabulary scaffolding increases academic vocabulary knowledge of EFL students as compared to definitional instruction.There was a significant pretest and posttest effect on Tier Two academic vocabulary knowledge for students who are EFL.Finally, was a significant interaction effect between groups and tests on Tier Two academic vocabulary knowledge?The results add to the research confirming Beck's theory of the importance of robust This result demonstrates that robust instruction improves student knowledge of vocabulary better than simple, definitional instruction, which only provides students with one dimension of a word's meaning.This result is consistent with the results from a current metaanalysis of 37 studies considering the impact of vocabulary on comprehension (Elleman, Lindo, Morphy, & Compton, 2009).Similarly, in this study, the focus on Tier Two academic vocabulary improved comprehension regardless of the strategy.The results from the ANCOVA reveal that previous English oral vocabulary data foreseen student'ssuccess throughout th evocabulary staging intervention.This finding supports the researcher's initial hypothesis.

Implications of the Study
The scaffolding intervention program is useful for teacher education or professional development programs.The intervention program provides a step by step model on how to learn to scaffold, i.e., the model of contingent teaching.This study contributed to our understanding of the circumstances in which low or high contingent support is beneficial.

Suggestions for further research
The first suggestion for future research in this area all stem from the limitations of the assessments used in this study.In the future, either a parallel form of the comprehension measure needs to be created, or a standardized comprehension assessment should be used to determine concurrent validity for the comprehension measure.

Table . 1
: Pre and Post Test Means and Standard Deviations for ETTVA and Comprehension Assessments

International Journal of English Literature and Social Sciences (IJELS) Vol-4, Issue-2, Mar -Apr, 2019 https://dx.doi.org/10.22161/ijels.4.2.2 ISSN: 2456-7620
understandings of that word.This result also adds to the research supporting the importance of Tier Two academic vocabulary improving the depth and breadth of EL students' overall vocabulary knowledge.