Investigating the Effect of Reduced Forms Instruction on EFL Learners’ Listening and Speaking Abilities

Listening comprehension is usually considered as one of the most difficult language skills to EFL learners due to the unavoidable presence of “reduced forms” in authentic speech. This study was an attempt to investigate the effect of explicit “reduced forms” instruction on Iranian EFL learners’ overall listening comprehension and their ability to recognize and produce them in their daily conversations. The participants of this study were 50 intermediate English learners who were randomly assigned as the experimental and the control groups of the study. Three pre-tests were administered at the commencement of the study to see if the participants of both groups were at the same level of listening comprehension and “reduced forms” awareness. After the pre-tests, the participants in the experimental group received instruction on “reduced forms” while the control participants continued their regular classes. At the end of the 10-week instruction, the participants were given three post-tests to see if they have improved their listening comprehension ability and their ability to recognize and produce the “reduced forms” recurrently in their daily speech. Although the control participants have significantly improved their listening comprehension, the fact that the experimental participants had outperformed implied the efficacy of “reduced forms” training on the overall listening comprehension’s betterment. The results also revealed that the experimental participants significantly improved their “reduced forms” awareness as well as their ability to produce “reduced forms” at the end of training course while the control participants didn’t.


Introduction
Despite the fact that listening has an important role in language learning, it is still the most neglected language skill. Moreover, learners recognize listening as the most difficult skill to acquire, it is said that L2 listening comprehension has remained the least researched of all four language skills (Vandergrift, 2007). In order to develop listening skill of EFL learners, language acquisition researchers and language teachers have explored listening strategies using a variety of methods, including think-aloud procedures O'Malley, Chamot & Kupper, 1989), listening strategies inventories (Fujita, 1985), questionnaires (Fujita, 1985;Goh, 2002;Vandergrift, 2002Vandergrift, , 2005, recall task (Moreira, 1996;Schmidt, 2002), and diaries (Goh, 1997).
Some researchers believe that EFL learners would not be able to improve their listening skill, because most of the instructional materials used in the classrooms are simplified and unnatural, no matter how different the employed techniques are, the instructional materials lack the strength to cover how the real listening process occurs (e.g. Brown & Yule, 1983;Rosa, 2002). Therefore, being exposed to the modified and unnatural language used in the classrooms, the learners often fail to comprehend the real language used by native speakers or the authentic one they hear during watching movies or listening to radio.
Considering the interdependence of speaking and listening abilities and the vital role of oral skills in interacting in a second or a foreign language, this study attempted to find out whether the explicit instruction of the English "reduced forms" as one of the key components of the spoken English has any effect on the improvement of the overall listening comprehension of the Iranian EFL learners and their ability to recognize and use the "reduced forms" in their daily vocalizations. In fact, this study was an attempt to find reasonable answers to the following questions: 1) Is there a significant difference between Iranian EFL learners who have experienced explicit instruction of English "reduced forms" and those who have not in terms of overall listening comprehension? 2) Does instructing English "reduced forms" explicitly increase Iranian EFL learners' ability to recognize them in the spoken language?
3) Does teaching English "reduced forms" explicitly enable Iranian EFL learners to produce them in their own daily verbalizations?

Background
Today, listening is considered as an active skill that involves many processes, but researchers believe that although listening comprehension is now recognized as an important aspect of language learning and consequently social interaction, much work remains to be done. As Brown (1987) mentioned, a significant number of published courses on listening comprehension and classroom practices in many schools in many countries continues to demonstrate that listening is still regarded as the least important skill in language teaching. And yet, despite a gradually increasing acceptance of the importance of listening comprehension for second/foreign language learners, innovations in the realm of listening comprehension are very rare if there is any in ESL or EFL programs, the so-called "Cinderella skill" (Mandelsohn, 1994;Nunan, 1997;Vandergrift, 1997).
There has been a growing body of research on the role of authentic materials on FL teaching in recent years. Researchers and teachers increasingly acknowledged the need for and usefulness of authentic materials in the field of language teaching in general and oral skills, in particular (Khalilisabet & Masefat, 2012). Rivers (1981) explained that all instructional materials used for listening comprehension, even in the earliest lessons, should be authentic, that is, it should consist of utterances with a high probability of occurrence. Teaching students to comprehend artificial language combinations which would rarely be heard from a native speaker is a waste of time and energy, and can only confuse students when later confronted with natural speech.
Empirical studies have substantiated the positive results taken by learners who have opportunities to interact and deal with authentic texts. Vandergrift (2007) argued in favor of using authentic materials as the best option, since the ultimate goal of second language learners is to understand the language that is used in real life communication. Studies, such as Miller (2005) and Thanajaro (2000), revealed that incorporating authentic materials lead to aural language development. In addition, Al-Musallam (2009) investigated the impact of aural authentic texts on listening comprehension abilities of four adult ESL students at an American university. He concluded that exposure to authentic materials would lead to improving students' listening comprehension abilities and motivation. By the same token, conducting on intermediate-level students, Herron and Seay (1991) found that those students who listened to authentic radio tapes as a substitute for regular classroom activities demonstrated significantly greater listening comprehension than those students for whom the authentic radio program was not a part of the semester's curriculum. Their research confirmed that, the more exposure to authentic speech the more improvement in listening-comprehension skill. They listed the main advantages of using authentic listening materials as follows, 1) They have a positive effect on learner motivation.
2) They provide authentic cultural information and exposure to real language.
3) They relate more closely to learners 'needs. 4) They support a more creative approach to teaching. Field (1997) explained that learners find it extremely motivating to hear something that has not been simplified: they felt that they are getting to grips with real language, and Newton (2009, p. 172) contends that "authentic texts can be motivating because they are proof that the language is used for real-life purpose by real people".
Critics of authentic materials, on the other hand, disputed the effectiveness on several grounds. Richards (2006) mentioned that authentic materials (a) created materials may be superior to authentic materials because they are generally built around a graded syllabus, (b) authentic materials often contain difficult and irrelevant language and (c) using authentic materials is a burden for teachers. Rost (2001) stated: "Authentic texts from one culture may give a false impression to a student from another unless they are presented in an authentic context which makes it clear precisely what they exemplify" (p. 49). In sum, the idea of authenticity in language teaching has been debated over the past three decades. However, the benefits that authentic materials bring to the FL classroom may be said to greatly outweigh the difficulties they might give rise to. In addition, it is possible to www.ccsenet.org/elt English Language Teaching Vol. 7, No. 1; overcome such challenges through task design. Researchers such as Field (1998) and Richards and Renandya (2002) recommend that: "instead of simplifying the language of the text, simplify the task that is demanded of the student. …with the text above the language level of the class, one demands only shallow comprehension" (p. 244). Undoubtedly, authentic materials used for ameliorating the oral language skills more or less incorporate "reduced forms" as one of the prominent features.

"Reduced Forms"
The term "reduced forms" is taken from Brown and Hilferty (1986) and refers to the phenomenon of phonological simplification and variation commonly observed in the informal speech of native speakers. According to Cele-Murica, Brinton, and Goodwin (1996) "reduced forms" involve unstressed vowels, omitted sounds, and other alternation of the full form". Researchers use different terms to refer to the same phenomenon (Crystal, 1997) called such forms "sandhi forms", Ur (1984) called them "weak forms" or Goh (2002) called "connected speech". Brown and Kondo-Brown (2006) mentioned that "connected speech" makes up "a very real part of the spoken language and occurs in all levels of speech from casual to even very formal levels" (p. 5). The naturally occurring speech of native speakers is mostly rapid and continuous with frequent linking, sound alteration, or reduction at word boundaries, which may cause comprehension difficulty when non-native speakers listen to it. Ito (2006) described how non-native speakers would find "connected speech" very different from what they would have normally heard before in language classrooms, where the speech from teachers and audio materials are typically carefully or slowly articulated. Goh (2002) and Chen (2002) claimed that students do not recognize words they know while listening to native speakers. Sun (2002) also made a similar suggestion that students cannot segment speech, and that makes listening difficult. Rosa (2002) explained that natural English, whether formal or informal, fast or slow, is full of these "reduced forms", and this creates a serious obstacle for students who have little or no exposure to "reduced forms". Table1 presents English "reduced forms" as listed by Brown and kondo-Brown (2006):

Contraction
This is a written manifestation of a small set of words which are often used in written dialogue to give a spoken flavor.
I'm, don't, she's, they'll, we're, you'd Elision It occurs when a sound is omitted and it is a typical feature of "connected speech". Despite the fact that in a word spoken in isolation a sound would be present, in "connected speech" it would disappear. This kind of reduction occurs mainly in words ending with /t/ and /d/ and particularly when they are between two other consonants.

Could: /kəd/ Assimilation
It is an important feature of English in which a phoneme changes its quality due to the influence of a neighboring sound.

Don't you: /dontʃa/
Researchers also speak about benefits of producing "connected speech". Dauer and Brown (1992) argued that producing "connected speech" can be beneficial in many ways because it enables the speaker to not only improve his or her intelligibility by developing overall speech rhythm, but also brings psychological relief and confidence as it causes speech to sound more natural. Not using "connected speech" might even cause a non-native speaker's speech to sound unnatural and choppy, and could bring about frustration to the listener (Celce-Murcia et al., 1996).

Why to Instruct "Reduced Forms"?
Henrichsen (1984)  "reduced forms", influence ESL learners' comprehension of input. He found a statistically significant interaction between proficiency level and the learners' test scores for presence/absence of "sandhi-variation" and estimated that about 35% of all words produced in natural speech can be reduced. Ting and Pierce (2011) further confirmed that the presence of "reduced forms" was a direct factor affecting the achievement of EFL English majors' listening comprehension. Instructing the "reduced forms" has thus been advocated as a means to remove the obstacle of improvement.
In spite of their substantial occurrence in spoken discourse, "reduced forms" are definitely not easy for EFL learners. "Reduced forms" are considered by many researchers (e.g. Brown, 1987;Brown & Yule, 1983;Henrichsen, 1984;Ur, 1984) to be one of the reasons that make dividing the stream of speech difficult, and in turn make comprehension inaccessible. Norris (1995, p. 67) explained the difficulty as follows: When students who come from English learning backgrounds in which they got used to slow speech are often shocked when they find themselves in a situation in which native speakers are talking to each other. In this situation, they have difficulty in understanding what is said.
The positive effects of teaching the "reduced forms" on listening comprehension have also been reported in the Japanese EFL context. Romanko (2008) found that teaching English "reduced forms" significantly improved Japanese freshman's ability to recognize "reduced forms" on a post-course test of listening ability. He also found that two months after the end of the course, 107 participants were able to demonstrate retention of most of their previously acquired knowledge without any controlled exposure to "reduced forms" occurring in the meantime.
Kuo (2012) proposed a film-based learning system to aid learners' listening comprehension of "reduced forms".
The system could not only extract the "reduced forms" in the films but also automatically developed cloze tests based on the extracted materials. Chang (2004) and Matsuzawa (2006) said about the positive effects of teaching "reduced forms" on the listening comprehension of the English language learners. They explained that while there are only a limited number of studies investigating the effects of "reduced forms" on listening ability, their results showed that teaching "reduced forms" leads to an improvement in listening comprehension of the English learners.
Cahill (2006) also elaborated on the importance of teaching "English reduced forms" to Japanese EFL learners. He mentioned that if teachers do not adequately prepare students for authentic international situations, they are doing their students a disservice. This lack of exposure may prevent Japanese EFL learners from developing a fuller range of listening-comprehension skills. D. Brown and K. Brown (2007, p. 5) pronounced the benefits of teaching "reduced forms" as follows: 1) "Reduced forms" are very real part of language.
2) Students need to learn more than the traditional grammar, vocabulary, and pronunciation that many language teachers present; "reduced forms" are important subsets of the new information they need to learn.
3) Students need to be able to adjust their styles and registers in using language; the ability to understand and use "reduced forms" is essential for making such adjustments. 4) "Reduced forms" are not just lazy, sloppy, careless, or slovenly language; rather, they occur in all levels of speech, including the most formal manners of speaking.
Not many researchers have studied the role of teaching "reduced forms" on perception, and fewer have investigated the role of instructing "reduced forms" on production of intelligible and natural language. Although Anderson-Hsieh, Riney, and Koehler's (1994) research did examine the production of "reduced forms", the study was more about examining how native speakers and non-native speakers differ in the amount of "connected speech" produced, rather than investigating the effectiveness of instruction on overall pronunciation ability. The results revealed that the higher level students produced more "connected speech" modifications that were closer to those of English native speakers than the lower level students. More studies are needed in order to understand the benefits of learning how to produce "connected speech" and not to mention more inquiries examining the teachability of "reduced forms".

Participants
Participants of the study were 50 male Iranian EFL learners who were studying English at Zaban-sara, a private language institution. All of the participants were studying general English, and were Farsi native speakers. Their age ranged from 16 to 37. The majority of the participants were 16 to 20 years old, whereas thirteen of them were 20 to 25, nine were 25 -30, and the remaining seven participants were 30 -37 years old. The participants www.ccsenet.org/elt Vol. 7, No. 1; were classified into two groups randomly as the control and experimental groups of the study; each group consisted of 25 learners.

Instruments
In order to answer the research questions, the following tests were used to collect the needed data: General English listening comprehension test: To answer the first research question, and to see the possible difference between Iranian EFL learners who have experienced explicit teaching of English "reduced forms" (experimental participants) and those who have not (control participants) in terms of listening comprehension, a reliable, and valid listening comprehension test was given to the participants as the pre-test and post-test, and the performances of the both groups were compared. The listening test consisted of two videos selected from the video book of the Four Corners 4 by Richards and Bohlke (2012) -a total of 26 listening items containing answering questions, true or false items, matching activity, completing the incomplete sentences with correct words and multiple choice items.
"Reduced forms" recognizing test: In order to answer the second research question a fill-in-the-blank dictation test consisting of 20 "reduced forms" statements served as the "reduced forms" pre and post-tests. In the "reduced forms" recognizing test, learners were asked to listen carefully to 20 taped statements, and meanwhile fill in the blanks in their answer sheets with the complete forms of the words they heard. The 20 statements of the "reduced forms" recognizing test mainly manifested examples of assimilation, reduction, elision and contraction. The goal of using this fill in the blank test was to see whether the participants were able to recognize the "reduced words" in the spoken language they hear, and also to see if explicit instruction of the "reduced forms" will improve their ability to comprehend these forms.
"Reduced forms" Production test: In order to answer the third research question, a speaking test was used both as the pre-test and posttest. In the speaking test, the participants were asked to speak for 2 minutes, and meanwhile their speeches were recorded for later analysis. Learners were free to speak about every topic they were interested in. The scoring of the speaking test was based on the number of "reduced forms" produced by the participants. Using this test it was hoped to see whether the participants were able to produce the English "reduced forms" in their daily, informal dialogues.

Procedure
First, participants of both groups were given three pre-tests for checking their listening comprehension ability, their "reduced forms" recognition ability, and their "reduced forms" production ability. The pretests were used to see whether all the participants in both groups were homogenous in their knowledge of the items under investigation. After pretests, learners in experimental group were given instruction on "reduced forms", but learners in the control group just followed their regular instructions.
The instruction of the "reduced forms" included focusing learners' attention on the manifestations of sound changes, and explaining the phonological rules of "reduced forms" to help students understand how the mechanism of each type of "reduced forms" functions. After explaining the phonological rules of the "reduced forms", students did a few "reduced forms" exercises in hope of enhancing their retention of the knowledge of "reduced forms". The course was met twice a week. Every teaching session lasted for 35 minutes. The instruction of the experimental group continued for 10 weeks while the authors were responsible for the treatment of the experimental group.  Background information of the video clips was provided to increase learners' listening comprehension.
Guided questions or pictures were provided to focus students' attention on the main ideas of the video clips.
The goal of this stage was to make learners familiar with the topic they are going to hear. Learners were presented with an aural text, and meanwhile they were asked to answer a few listening comprehension questions.
The aim was to check their comprehension of the main ideas of the language they heard.

minutes
3 Fill in the blank stage Learners listened to a few short texts and sentences which included different types of the previously mentioned "reduced forms".
Learners were asked to fill in the blanks of their answer sheets with the complete forms of the "reduced forms" they heard.
6 minutes 4 Raising students' awareness of "reduced forms" Learners were taught the "reduced forms" by focusing on the sound changes and the rules which they follow. 7 minutes 5 "Reduced forms" Perception exercises Learners were asked to write a few examples similar to those "reduced forms" which they were taught in that session.
The aim was to help learners to learn, and internalize those processes. So they could use, and understand better, the "reduced forms" of the language they heard.

minutes 6 "Reduced forms" Production exercises
Learners were asked to work in pairs.
In each session they were asked to choose a topic, and then speak about it in turn, using the previously taught "reduced forms" of English.
The aim of this stage was to enable the learners to produce the "reduced forms" in their speech.

minutes 3minutes
After the treatment, subjects were given three post-tests for checking their possible amelioration in general listening comprehension ability, their "reduced forms" recognition the ability and their "reduced forms" production ability. Then, the results were compared between two groups and also with the participants' pretest results.

Data Analysis and Discussion
In order to answer the research questions, a control and an experimental group were formed from the Iranian EFL learners of Zaban-sara language institution. First, 3 pre-tests (for checking the participants' overall listening ability, their ability to recognize "reduced forms" and their ability to produce the "reduced forms" in their daily conversations) were administered to see if the participants of both groups were more or less at the same level of proficiency. After gaining certitude that the control and the experimental participants had not differed significantly in the referred aspects, a 10-week (two 35-minute sessions a week) listening course was conducted; the focus for the experimental group was on "reduced forms" training whereas the control group continued their regular listening class activities and drills offered by their course book. After 10 weeks, both groups took their post-tests to examine the existence of any improvements on the part of participants as the result of the 10-week "reduced forms" training course.

Comparing the Two Groups on the Pre-Tests
The study's pre-tests attempted to compare the participants of the study in three different but interrelated respects of English oral skills before the commencement of the study's treatment. Hence, accordingly, three pre-tests were designed and applied for the participants of the study. In order to examine the possible difference between the two groups' overall listening comprehension ability, a listening comprehension pre-test was administered. Employing three independent-samples t-tests, it was revealed that there was no statistically significant difference between these two group's performances on the "overall listening comprehension pre-test" (p = .713 > .05) (Table 3), the "reduced-forms recognizing pre-test" (p = .495 > .05) (Table 4) and the "reduced forms" production pre-test (p = .608 > .05) (  To sum up, the three applied independent-samples t-tests revealed that participants of both groups were approximately similar in their listening ability in general and in "reduced forms" recognizing and producing, in particular.

Performance of Participants of Both Groups on "Overall Listening Comprehension" Pre and Post-Test
In order to scrutinize the difference between the experimental groups' performances on the pre and the post "overall listening comprehension" test, a paired-samples t-test was run. Likewise, another paired-samples t-test was run to examine the difference between the pre and post-test means of the control group. Descriptive analysis showed that, the means of both groups on the post-test were higher than that of theirs on the pre-test (Experimental: pre-test = 7.44, post-test = 10.36/ Control: pre-test = 7.29, post-test = 8.90). Tables 6 and 7 are the reports of the used paired-samples t-tests which reveal that there were significant differences between the experimental and the control participants performances on general listening comprehension pre and post-tests (p = .000 <. 05). As the results suggest, participants of both groups made statistically significant improvements in their overall listening comprehension ability after 10 weeks of general listening comprehension training.

Performance of Participants of Both Groups on "Reduced Forms" Recognition Pre and Post-Test
Descriptive statistics showed that the post-test mean of the experimental group on "reduced forms" recognizing was higher than its pre-test mean (pre-test = 3.83, post-test = 5.56) A paired-samples t-test was conducted to investigate if this difference was significant. As Table 8 indicates the experimental group made a significant improvement in the "reduced forms" recognizing post-test (p = .000 < .05). Although the post-test mean of the control participants on "reduced forms" recognizing test was also higher than that of theirs on pre-test (pre-test = 3.98., post-test = 4.10) but as Table 9 indicates the control participants did not make a significant improvement www.ccsenet.org/elt Vol. 7, No. 1; in the "reduced forms" recognizing post-test (p = 0.161 > .05). Therefore, without "reduced forms" instruction, the control participants did not improve as much as their peers in the experimental group in recognizing "reduced forms". Therefore, a positive answer could be given to the second research question. That is, "reduced forms" practice was shown to be effective in increasing Iranian EFL learners' ability to understand "reduced forms".

Performance of Participants of Both Groups on "Reduced Form Production" Pre and Post-Test
According to the descriptive statistics, the post-test mean of the experimental group on producing "reduced forms" was higher than that of theirs on pre-test (pre-test = 0.60, post-test = 1.96). A paired-samples t-test was conducted to investigate if this difference was significant. Table 10 indicates that the experimental group made a significant improvement in the "reduced forms" production post-test (p= .000 < .05) which suggests the "reduced forms" instruction was effective in improving participants' "reduced forms" production. On the contrary, as Table 11 indicates, the control group did not make a significant improvement in the "reduced forms" producing post-test (p = .161 > .05). Therefore, a positive answer can be given to the third research question. That is, "reduced forms" practice could increase Iranian EFL learners' ability to produce "reduced forms" in their daily speech.

Comparing the Two Groups on the Administered Post-Tests
According to the results obtained, the post-test mean of the experimental group on "general listening comprehension" test was higher than the post-test mean of the control group. An independent-samples t-test was used to examine if this difference was significant. Table 12 reveals that there was a significant difference between these two group's performances in the "general listening comprehension" post-test (p = 0.003 < .05) i.e., the experimental group significantly outperformed the control on this test. Consequently, it can be concluded that "reduced forms" practice was effective in increasing Iranian EFL learners' general listening comprehension ability. Therefore a positive answer could be given to the first research question.  Through employing another independent t-test it was revealed that there was a significant difference between the participants of two group's performances in the "reduced forms" recognition post-test (p = 0.000 < .05); the experimental group significantly outperformed the control group on the "reduced forms" recognizing post-test, accordingly, a positive answer can be given to the second research question. A third independent-samples t-test depicted that there was statistically significant difference between these two group's performances in the "reduced forms" production post-test (p = 0.000 < .05). Since experimental group significantly outperformed the control group in the "reduced forms" producing post-test, it could be concluded that "reduced forms" practice was effective in increasing the learners' ability in producing the English "reduced forms" in their daily conversations. Hence, a positive answer could be given to the third research question. The role of listening comprehension in both communication and language acquisition is undeniable, however according to many (e.g., Brown, 1990;Ur, 1984), EFL learners have difficulties in understanding spoken language. Researchers suggest that one of the main reasons for this is appliance of numerous "reduced forms" in daily conversations which makes comprehension incredibly difficult for EFL learners. A few researchers have also investigated the effects of "reduced forms" instruction on learners' speaking ability. They believe that listening and speaking are closely related, and production of "reduced forms" not only makes learners' speech more fluent (Morely, 1991), but also has positive effects on their receptive skills (Hill & Beebe, 1980). Inspired by the existing literature, this study tried to test the effect of English "reduced forms" instruction on general listening comprehension, "reduced forms" recognition and "reduced forms" production of a sample of Iranian EFL learners.
The comparison of the two groups' listening comprehension pre and post-test results revealed that both groups made significant improvements in their listening comprehension post-test, though the performance of the experimental group was better than the performance of the control group. The comparison of the two groups' pre and post-test results on recognizing and producing "reduced forms" tests also revealed that it was only the experimental group which significantly improved its "reduced forms" recognition and production. Hence, it was highly possible that "reduced forms" instruction was effective in raising the learners "reduced forms" understanding as well as their ability to produce them. The comparison of the two groups listening comprehension post-test results revealed that the experimental group was significantly better than the control group, and since the only difference between the two groups was accommodation of "reduced forms' instruction in the experimental class activities, it could be concluded that "reduced forms" instruction had even positive effect on general listening comprehension of the Iranian EFL learners.

Conclusion
Listening comprehension has an important role in doing oral communication, since the ability to understand what others say is essential to communicative interaction. It is also believed that listening has a crucial role in language acquisition and language learning. Rankin (1929) explained that listening is the most frequently used language activity, since the average adult spends approximately three times as much time listening as reading.
According to a research while communicating, adults spend 40-50% of communication time for listening, 25-30 % for speaking, 9 % for writing, and about for 11-16 % reading (Rubin, 1994). Bird (1953) explained that college students spend 42 % of their time in listening, 25 % in speaking, 15 % in reading and 18 % in writing.
Listening comprehension is also the vulnerable spot of many Iranian EFL learners and as the result has drawn the attention of many Iranian researchers. According to some researchers (Jahangard, 2007;Hosseini 2007;Razmjo and Riazi, 2006), students' aural and oral skills are less emphasized in the Iranian prescribed EFL textbooks. Teachers put much less emphasis on oral drills, pronunciation, listening, and speaking abilities than on reading, writing, grammar, and vocabulary. Therefore, Iranian students face difficulties in using English language for communicative purposes. To help EFL learners improve their listening comprehension, researchers have investigated the effects of different factors. Among many suggestions the researchers seem to agree on the idea that "reduced forms" is one of the main reasons for unsuccessful interactions. To see this in practice, researchers have conducted a few studies in East Asian countries such as Japan, Taiwan and China. These studies mostly have investigated the effect of "reduced forms" instruction on improving overall listening comprehension of the EFL learners, increasing their "reduced forms" understanding as well as enabling them to produce and use them in daily speech.
Likewise, this study has investigated the effect of "reduced forms" training on increasing Iranian EFL learners' overall listening comprehension, "reduced forms" understanding, and also their ability of producing the "reduced forms", since it is believed that listening and speaking skills are closely inter-related.
In order to answer the study research questions a total of 50 Iranian EFL learners were recruited and grouped as the experimental and control group of the study.
The pre/post-test results indicated that participants of both groups improved their general listening skills significantly at the end of the 10-week listening comprehension course. Results also showed that experimental participants had outperformed on "reduced forms" recognition and production tests than their peers in the control group as the result of the treatment they received during the course of study. These findings are in line with Brown and Hilferty's (1986) and Jia and fu (2011) who also confirmed the effectiveness of "reduced forms" instruction on increasing learners' "reduced forms" awareness. The results are also in line with Underwoods (2012) who also confirmed the effectiveness of "reduced forms" instruction on enhancing learners' ability of "reduced forms" production.
To recapitulate, all stakeholders, the administrators, curriculum designers, material developers, and teachers can draw on the findings of the present study to shape their curricula, create syllabi, develop materials, and conduct classes accordingly. To solve listening comprehension problem as the vulnerable spot of many Iranian EFL learners, the results of the present enquiry would be of utmost importance in that "reduced forms" training has positive effect not only on improving Iranian EFL learners' overall listening comprehension but also on producing native-like pieces of language.