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A COMPARATIVE STUDY OF DIRECT AND INDIRECT
VOCABULARY LEARNING STRATEGIES AMONG EFL UNIVERSITY
STUDENTS
Narimanova Jamola
Kholboeva Durdona
Uzbekistan State World Languages University (UzSWLU
)
Abstract: The acquisition of vocabulary is essential for achieving proficiency
in English as a Foreign Language (EFL), particularly at the university level where
students are expected to master both general and academic language. This study
investigates and compares the effectiveness of direct and indirect vocabulary learning
strategies (VLS) employed by EFL university students. Direct strategies involve explicit
learning techniques such as memorization, word lists, and translation, while indirect
strategies include contextual inference, language exposure, and social interaction.
Using a mixed-method approach involving surveys, vocabulary tests, and classroom
observations, this research explores how these strategy types influence vocabulary
acquisition and retention. The findings indicate that while direct strategies often lead
to faster short-term vocabulary gains, indirect strategies contribute more significantly
to long-term retention and contextual usage. Furthermore, the study highlights the
importance of integrating both types of strategies to accommodate diverse learner
preferences and enhance vocabulary development. These insights offer practical
implications for EFL instructors, curriculum designers, and learners aiming to
improve vocabulary acquisition in university contexts.
Keywords: Vocabulary acquisition, direct strategies, indirect strategies, EFL
university students, language learning strategies, academic vocabulary, learner
autonomy, retention.
1. Introduction
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Vocabulary forms the backbone of effective communication in any language.
In English as a Foreign Language (EFL) contexts, especially at the university level, a
rich and functional vocabulary is essential not only for everyday communication but
also for academic success. Without sufficient vocabulary, students struggle to
comprehend texts, express ideas fluently, and engage in meaningful academic
discourse. As such, improving vocabulary acquisition has become a central concern for
educators and researchers alike.
Numerous studies in second language acquisition (SLA) have highlighted the
critical role that vocabulary plays in overall language proficiency. Researchers such as
Nation [1] and Schmitt [2] have long emphasized the need for strategic vocabulary
instruction that goes beyond rote memorization and promotes deeper cognitive
processing. Vocabulary learning strategies (VLS) are defined as conscious techniques
employed by learners to acquire, store, and retrieve new vocabulary [3]. These
strategies are commonly categorized as either direct or indirect. Direct strategies
include intentional learning practices such as repetition, translation, and use of word
lists. Indirect strategies, by contrast, encompass more implicit and incidental
techniques such as reading extensively, inferring meaning from context, and engaging
in communicative activities.
While both strategy types aim to enhance vocabulary knowledge, their
mechanisms and long-term effectiveness differ. Direct strategies often appeal to
students seeking immediate results, while indirect strategies are more closely tied to
naturalistic language acquisition and deeper retention [4]. However, there is still
insufficient consensus regarding which set of strategies yields better outcomes for EFL
learners, particularly in higher education contexts where academic vocabulary
demands are significantly higher.
In Uzbekistan and many other EFL settings, university students are frequently
exposed to both strategy types, either through formal instruction or informal practice.
Yet, the integration of vocabulary strategies into curricula remains inconsistent.
Moreover, learners are rarely taught how to choose and apply strategies that match their
cognitive style, language proficiency, or learning goals. This study seeks to compare
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the effectiveness of direct and indirect vocabulary learning strategies among EFL
university students. It aims to explore how each approach impacts vocabulary
acquisition, learner autonomy, and long-term retention. By employing a comparative
lens, the research provides practical insights for teachers and curriculum designers
aiming to optimize vocabulary instruction in higher education.
2. Theoretical Background
Vocabulary learning has been a prominent area of focus within second language
acquisition (SLA) studies, with researchers consistently emphasizing that vocabulary
development is foundational to language competence . In recent decades, the
exploration of vocabulary learning strategies (VLS) has gained momentum,
particularly in relation to how learners engage with and internalize new lexical items.
This section provides a theoretical overview of the two main categories of vocabulary
learning strategies: direct and indirect, as well as their pedagogical significance and
relevance to university-level EFL learners.
2.1 Definition and Role of Vocabulary Learning Strategies
Vocabulary learning strategies refer to the specific techniques or actions
learners use to facilitate the acquisition, retention, and retrieval of vocabulary.
According to Schmitt, these strategies are part of the broader domain of language
learning strategies and play a crucial role in promoting learner autonomy. Oxford
categorizes strategies as deliberate attempts to control one’s learning process,
especially when faced with unfamiliar language input. Effective strategy use can lead
to more efficient vocabulary learning by encouraging learners to actively process
language rather than passively memorize it. As Nation points out, vocabulary
acquisition is most successful when learners are exposed to repeated, meaningful
encounters with words, ideally through both intentional and incidental learning.
2.2 Direct Vocabulary Learning Strategies
Direct strategies are those that involve conscious, intentional efforts to learn
vocabulary. These include rote memorization, use of bilingual word lists, vocabulary
notebooks, flashcards, and mechanical repetition. Learners employing direct strategies
typically focus on specific lexical items, aiming for accuracy and retention. One of the
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main advantages of direct strategies is their suitability for short-term vocabulary gain,
especially for learners preparing for exams or learning technical terminology. Research
by Laufer and Hulstijn [6] suggests that direct strategies are particularly effective when
tasks require high cognitive involvement, such as form-focused practice or intentional
word study.
However, direct strategies can be limited in their capacity to foster contextual
understanding or promote deeper lexical processing. Learners may remember the form
of a word but struggle to use it appropriately in varied contexts if their learning is
restricted to translation-based methods.
2.3 Indirect Vocabulary Learning Strategies
In contrast, indirect strategies refer to incidental or subconscious methods of
vocabulary acquisition. These include reading extensively, listening to authentic
materials, using context clues, and engaging in meaningful interaction. Rather than
focusing on isolated words, indirect strategies emphasize natural language exposure
and inferencing skills. Indirect strategies have been widely praised for promoting long-
term retention and contextual awareness. Krashen’s Input Hypothesis [5] underscores
the importance of exposure to comprehensible input for language development, while
Nation highlights that vocabulary learned through extensive reading tends to be more
deeply integrated into a learner’s productive language repertoire.
The downside, however, is that indirect strategies may not yield immediate
vocabulary gains and often require higher language proficiency and motivation.
Learners who lack sufficient reading or listening fluency may find it difficult to deduce
word meanings from context without support.
2.4 Strategic Integration and Learner Autonomy
Most scholars now advocate for a balanced and integrative approach to
vocabulary strategy instruction, combining both direct and indirect methods to
accommodate diverse learner needs. Learner factors such as cognitive style,
motivation, prior knowledge, and goal orientation all influence strategy effectiveness.
Zimmerman [4] emphasizes that strategic learners tend to monitor their progress, adjust
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their methods, and take greater control of their learning process—a quality particularly
valuable at the university level.
Chamot and O’Malley [7] further argue that strategy training should be
explicitly taught within language programs. When learners are aware of the variety of
strategies available and are given the tools to reflect on their learning habits, they are
more likely to become self-regulated and successful language users.
2.5 Summary of Theoretical Perspectives
In summary, both direct and indirect strategies offer distinct advantages and
limitations. While direct strategies facilitate intentional learning and short-term gains,
indirect strategies promote retention, contextual fluency, and language use in real-life
settings. The key lies in understanding when and how to apply each strategy type
effectively, and how to scaffold learners toward independent strategy use. In
university-level EFL contexts, where both academic and communicative vocabulary
are critical, a well-balanced strategy instruction framework becomes essential.
3. Methodology
This study adopted a comparative design to evaluate the effectiveness of direct
versus indirect vocabulary learning strategies among English as a Foreign Language
(EFL) university students. The methodology was designed to capture both quantitative
and qualitative data through structured instruments, enabling a comprehensive analysis
of strategy impact on vocabulary acquisition.
3.1 Research Design
A quasi-experimental approach was utilized, consisting of two student groups:
one that received instruction focused on direct strategies, and another that engaged with
indirect strategy tasks. Both groups were exposed to equal time frames, instructional
materials, and vocabulary targets. Pre-tests and post-tests were administered to
measure vocabulary gains, while a questionnaire and classroom observations were used
to gather learner feedback and engagement levels.
3.2 Participants
Participants were first-year undergraduate students majoring in English
Philology and English Education. All participants had comparable English proficiency
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levels (B1–B2 CEFR level), confirmed through institutional placement tests. The study
involved a total of 48 students, randomly assigned into two groups of 24.
3.3 Instruments and Materials
Vocabulary Test (Pre- and Post-Test):
A 40-item multiple-choice test
evaluating receptive and productive vocabulary knowledge.
Questionnaire:
Adapted from Oxford’s Strategy Inventory for Language
Learning (SILL) [3], focused on self-reported strategy use.
Observation Checklist:
Used to record student behavior related to strategy
engagement, participation, and peer interaction.
Instructional Materials:
Word lists, reading passages, digital flashcards,
and peer dialogue activities.
3.4 Instructional Procedures
Group
Instructional Focus
Example Activities
Direct Strategy
Memorization, repetition,
drills
Word
lists,
bilingual
flashcards, quizzes
Indirect Strategy
Contextual
use,
inference, tasks
Reading
texts,
discussions, storytelling
Instruction was conducted over four weeks, with three 90-minute sessions per
week. Each group followed a curriculum targeting the same 120 vocabulary items,
taught using their respective strategies.
3.5 Data Collection
Data collection occurred in three phases:
1.
Pre-test:
Administered in week 1 to establish a baseline.
2.
Instruction:
Conducted during weeks 2–4.
3.
Post-test and Questionnaire:
Conducted in week 5 to assess vocabulary
gains and strategy perception.
3.6 Data Analysis
Quantitative data from the tests were analyzed using mean comparison and gain
score analysis. Questionnaire results were analyzed using Likert scale frequency
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distribution. Qualitative observation data were categorized into key themes of strategy
use and engagement.
3.7 Comparative Pre/Post-Test Results
Table 1:
Pre- and Post-Test Mean Scores
Group
Pre-Test Mean
Post-Test Mean
Gain Score
Direct Strategy
21.5
32.3
10.8
Indirect Strategy
22.1
34.8
12.7
Figure 1:
Vocabulary Gain Comparison
These results show that both groups improved, but students using indirect
strategies achieved slightly higher vocabulary gains.
3.8 Questionnaire Summary
Most students in the indirect strategy group reported higher enjoyment and
confidence during vocabulary tasks. Those in the direct strategy group appreciated the
clarity and structure of learning but noted difficulty in applying words in context.
Table 2:
Selected Questionnaire Results (Agree/Strongly Agree %)
Statement
Direct (%)
Indirect (%)
I feel confident using new
words after learning them
68%
85%
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I enjoy the vocabulary
learning activities
70%
91%
I find the strategies
helpful
for
long-term
retention
59%
87%
These data reinforce the notion that indirect strategies, though more implicit,
promote deeper engagement and lasting vocabulary growth.
4. Results and Discussion
This section interprets the findings derived from the data presented in Chapter
3. Both the direct and indirect strategy groups demonstrated improvement in
vocabulary knowledge; however, the degree and nature of that improvement varied,
indicating important pedagogical implications.
4.1 Vocabulary Gains: Quantitative Outcomes
As illustrated in Table 1 and Figure 1, students who were instructed using
indirect strategies achieved a higher mean gain score (12.7) compared to those who
received direct strategy instruction (10.8). While both groups benefited from focused
instruction, the indirect strategy group’s performance suggests that vocabulary learned
in context may be more deeply retained and accessible.
This finding supports Krashen’s [5] theory of comprehensible input and
Nation’s [9] emphasis on repeated, meaningful exposure. Indirect strategies, which
often involve incidental learning through authentic reading and discussion, may foster
stronger semantic networks and long-term retention.
4.2 Affective and Motivational Responses
According to the questionnaire data presented in Table 2, learners in the indirect
group reported higher levels of confidence and enjoyment. These affective responses
are significant because they suggest that strategy type impacts not only performance
but also learner engagement.
Indirect strategy learners were more likely to rate their vocabulary learning
experience as motivating and contextually relevant. This is consistent with Chamot and
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O'Malley’s [7, 8] claim that strategy-based instruction enhances learner autonomy and
involvement.
Direct strategy learners, by contrast, appreciated the structured, exam-oriented
nature of their instruction but expressed some frustration with the mechanical nature
of the activities. Several students noted that while they could recall words for the test,
they struggled to apply them in conversations or writing.
4.3 Observational Themes
Classroom observations also revealed behavioral differences. Students in the
indirect group:
Engaged more in peer interaction.
Asked clarification questions about word usage.
Used vocabulary journals more consistently.
In contrast, the direct strategy group tended to work individually and relied
more on teacher confirmation. Although their focus levels were high, their strategy use
was less dynamic.
These patterns suggest that indirect strategy environments promote a more
communicative and reflective learning culture.
4.4 Integration of Quantitative and Qualitative Data
The triangulation of test results, questionnaire responses, and classroom
observations confirms a consistent trend: indirect strategies, while less structured, offer
broader cognitive and motivational benefits. Direct strategies provide immediate
results and clarity, especially for exam contexts, but may not support deeper lexical
fluency [10].
Table 3:
Summary of Comparative Observations
Feature
Direct Strategy Group
Indirect Strategy Group
Vocabulary Test Gain
10.8 points
12.7 points
Enjoyment of Activities
70%
91%
Confidence Using New
Words
68%
85%
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Strategy Use in Peer
Interaction
Minimal
High
Use
of
Vocabulary
Journals
Occasional
Frequent
4.5 Pedagogical Implications
These findings have practical applications for curriculum design in EFL
programs at the university level. Educators should:
Integrate both strategy types into instruction.
Encourage contextual learning through authentic materials.
Provide students with opportunities for collaborative vocabulary use.
It is also recommended that instructors explicitly teach strategy selection based
on learning goals—direct strategies for precision and review, indirect strategies for
usage and depth. Ultimately, a hybrid approach that scaffolds learners through both
intentional and incidental learning activities may yield the most comprehensive
vocabulary development outcomes.
5. Conclusion
This study set out to examine the comparative effectiveness of direct and
indirect vocabulary learning strategies among university-level EFL students. The
research demonstrated that both strategy types positively impacted vocabulary
development, but with distinct advantages depending on the dimension of learning
emphasized. Direct strategies facilitated quick memorization and clarity, while indirect
strategies fostered deeper contextual understanding, learner autonomy, and long-term
retention.
The quantitative analysis showed that the indirect strategy group outperformed
the direct strategy group in vocabulary gain scores. Additionally, qualitative insights
gathered from questionnaires and classroom observations highlighted that learners
exposed to indirect strategies exhibited higher motivation, stronger engagement, and
more collaborative behaviors. These findings affirm the multidimensional nature of
language learning and emphasize the importance of matching instructional techniques
to learner needs and educational contexts.
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From a pedagogical standpoint, the results suggest that instructors should not
treat direct and indirect strategies as mutually exclusive. Instead, a blended approach
that strategically incorporates both can yield the most robust outcomes. Teachers
should model both types of strategies, encourage students to experiment with various
techniques, and foster an environment where learners feel empowered to reflect on and
adjust their vocabulary learning processes.
Moreover, curriculum designers are encouraged to embed explicit strategy
training into EFL syllabi. This includes integrating authentic materials, task-based
instruction, and opportunities for peer interaction. As university students are expected
to navigate increasingly complex academic texts and produce sophisticated written and
spoken outputs, equipping them with flexible and effective vocabulary strategies
becomes a crucial component of their language education.
In conclusion, vocabulary learning is not solely a matter of acquiring words—
it is a process that requires strategic awareness, cognitive effort, and contextual
application. By understanding the unique contributions of both direct and indirect
strategies, educators can more effectively support EFL learners in developing a
powerful and enduring vocabulary repertoire that extends well beyond the classroom.
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