Incidental vocabulary learning is a form of acquiring new words without having a specific intention in the acquisition, and it can occur in or out of the educational frame (Hatami, 2017). In the digital age, incidental vocabulary acquisition is increased as learners encounter and assimilate new words through different online platforms and technological tools. The study was conducted by searching digital databases ERC and ERIC using keywords such as "EFL," "L2," "reading," "listening," "viewing," and "watching" over 15 years (2008-2023). The studies that focus on traditional strategies or word frequency over incidental learning were excluded. Consequently, the results include diverse locations and learners and aim to capture a comprehensive view of incidental vocabulary learning.  This study explores the efficacy of incidental vocabulary learning modes—reading, listening, and watching—in an English as a foreign language classroom, considering the influence and the role of digitalization. While reading appears as the most potent mode of input for incidental vocabulary acquisition, listening and viewing also contribute significantly, but not as significantly as reading. Moreover, combining reading with listening has the most multifaceted approach and superior results in incidental vocabulary learning for foreign language educators. However, due to the lack of research on specific age groups and diverse situations, further studies are needed to explore various student types and effective methods for learning new vocabulary, particularly in Swedish schools.

The aim of this study was to investigate the effects web-based multimedia annotated vocabulary learning in context model and in spaced repetitions on vocabulary retention of intermediate level English language learners. The research study encompassed two main faces which was related to development of the material and implementation of it. In WEBVOCLE, which stands for web-based vocabulary learning material, the contextual presentation of vocabulary were enriched with audible online dictionary, pictures and animations / target words were repeated by the learners with interactive exercises, such as gap-filling, cloze and multiple choice test, games, puzzles, in &lsquo / spaced repetitions&rsquo / . In the study both qualitative and quantitative data were gathered through attitude questionnaires, checklists, interviews, focus group interviews and through vocabulary retention tests. The qualitative data were analyzed according to qualitative data analysis techniques and quantitative data were analyzed using SPSS statistics software. Feedback obtained from the learners demonstrated that they not only developed a positive attitude toward English vocabulary language learning but also increased their vocabulary retention level of the target vocabulary through spaced repetitions.

The primary purpose of this study is to find out which approach is more effective, text-based approach or dictionary-based approach, in learners’ mastery of new words and the time duration in learners’ memory. Group A learners received a text containing ten target words with explanations. Group B learners received the material of the same target words with meanings and examples. Ten minutes later, both groups  were given the same test. Two weeks later, all of them took the same test as in the first test.  Learners in Group A showed statistically more significant gains in their vocabulary knowledge in both tests than Group B learners, and they retained the words for longer than Group B. This study thus demonstrates that the text-based approach is more effective than the dictionary-based approach in mastering and memorizing new words.

The purpose of the study was to determine if there is an effect on retention of vocabulary when music and imagery are used, to accelerate learning. As background for the study four brain functioning theories as developed from recent neuroscientific research were explored. These were the theory of right/left cerebral dominance (Sperry & others), triune brain theory (MacLean), taxon and locale long term memory (O'Keefe & Nadel), and holographic memory (Pribram). These four theories all suggest multiple channels of input will increase information retention. The research utilized three conditions: an experimental condition of music plus imagery, an experimental condition of music only, and a no treatment condition.

The purpose of this study was to determine the effect on selected Upward Bound students' vocabulary retention rate and attitude toward computers when using color in a computer assisted instructional (CAI) program. Past research on the use of color in the educational process does not answer questions about possible effects it may have when used in CAI programs. Specific areas addressed by this study include: (1) differences in color computer assisted instructional software and achromatic versions of the lesson, (2) differences in the short-term vocabulary retention rate for color versus achromatic versions, (3) differences in the long-term vocabulary retention rate for color versus achromatic versions, (4) differences on the affective attitude scale for color versus achromatic versions, (5) differences in short-term memory based on gender and computer experience, (6) differences in long-term memory based on gender and computer experience and (7) differences on the affective attitude scale based on gender and computer experience. Subjects in the experiment were high school students participating in Upward Bound programs at Texas Christian University and the University of North Texas. A pretestposttest design was used and data were obtained from seventy-one students. A CAI program presented students with twenty words and definitions via a drill and practice mode. The words came from Schuster's list of rare and seldom used words considered easy to learn. Two computer systems were used in this study, achromatic and color. Students completed the Computer Attitude Scale at the beginning and end of the CAI lesson. A pretest, immediate posttest and two week delayed posttest were administered to both experimental groups. Analysis of the data revealed a significant difference in long-term memory based on gender and computer experience. Girls using the color version of the lesson scored significantly higher on the delayed posttest than girls using the achromatic version.

This study is an evaluation of online annotated readers developed for first grade students enrolled in Chinese immersion. The electronic readers were created to provide additional input to immersion students, who had little time in class for Chinese character reinforcement. The students accessed online readers from their homes and took assessments before and after each reader to test for improved character comprehension. In addition, students were divided into treatment and control groups. The treatment group had annotated electronic readers with audio and games. Conversely, the control group did not have annotations but audio was included. Results demonstrate a significant difference between preliminary and post-assessments, suggesting that students comprehended more characters after reading. No significant differences were detected between the control (non-annotated) and treatment (annotated) groups. Additional data collected from parent surveys provide useful demographics about subjects' socio-cultural and language variables as well as highlight parental desires for more support and help-aides. Computer Assisted Language Learning (CALL) in relationship to young immersion students learning Chinese is also discussed. Results suggest that online annotated readers can be an important resource for students who have limited instructional time in the classroom and little opportunity to receive help at home.