Yakup Çetin

Mental Pollution Hypothesis and Foreign Vocabulary Retention

Mental Pollution Hypothesis and Foreign Vocabulary Retention Research into second language acquisition lists several factors - social, psychological, cognitive, and affective - as reasons for the failure or low performance of many adult language learners. This present study was conducted to show that in addition to these factors it can also be greatly slowed by mental pollution - any ‘contamination of the mind’ by various forms of affective visual distractors, ranging in scope from violent or sexually suggestive images to comedic commercial advertisements and coming from a variety of media sources - from which younger learners are mostly protected but older learners are accustomed to encountering on an almost daily basis. In order to test the mental pollution hypothesis, 106 university students participated in the experiment which comprised vocabulary teaching along with two different treatments: mental pollutants being the first and free class time with relaxing music in the background comprising the second. The Equivalent Materials, Pretest, Posttest Design together, including descriptive statistics and paired sample t-tests, were used to analyze the vocabulary scores derived from the two treatments. The findings of the experiment indicate that when learners are exposed to high level of mental pollution, they demonstrate low retention of new vocabulary in a foreign language.

An exploration of the relationship between undergraduate students’ library book borrowing and academic achievement

This exploratory study examines book circulation patterns among undergraduate university students at an English-language University in Istanbul, Turkey, in order to investigate the relationship between students’ academic achievement and discipline of study, gender and book borrowing habits. Overall, this study supports the important role of the academic library’s print book collection in supporting and contributing to student success and demonstrates a significant positive correlation between undergraduate students’ level of academic achievement and the number of books they borrowed from the university library. This positive correlation was found for students in all faculties and fields of study, but was strongest for students studying qualitative disciplines and was particularly strong for students enrolled in English as a foreign language programmes.

Effects of Violent Media on Verbal Task Performance in Gifted and General Cohort Children

At the request of the Journal Editor(s) and the Publisher and/or the author(s), the following article has been retracted. Çetin, Y., Wai, J., Altay, C., & Bushman B. J. (2016). Effects of violent media on verbal task performance in gifted and general cohort children. Gifted Child Quarterly, 60(4), 279-287. doi: 10.1177/0016986216660382 Joseph Hilgard, postdoctoral fellow at the Annenberg Public Policy Center at the University of Pennsylvania, contacted the journal with questions regarding the pattern of results and conducted reanalyses of the data that called into question the credibility of the data. Unfortunately, the data collection procedures could not be verified because the author who collected the data (Cengiz Altay) could not be contacted following the attempted coup in Turkey. Therefore, as the integrity of the data could not be confirmed, the journal has determined, and the co-authors have agreed, to retract the study.

Using Hypnosis to Enhance Learning Second Language Vocabulary

In this article, we measure the effects of hypnosis and suggestions for learning second language vocabulary. Participants (N = 70) were randomly assigned to a hypnosis or a control group. They were pre-tested, and then presented 21 Spanish words, post-tested immediately and 1 week later. The data were analyzed using repeated measures analysis of variance with group (experimental versus control) as the between-subjects factor, and time as the within-subjects factor. The experimental group performed significantly better in both tests. Our results indicate that hypnosis is beneficial for second language vocabulary learning and retrieval.