Çetinkaya, Hakan

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https://gcris.yasar.edu.tr/handle/123456789/12144
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Prof.Dr.
Email Address
Main Affiliation
01.01.05.03. Psikoloji Bölümü
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Current Staff
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ORCID ID
0000-0001-5585-8678
Scopus Author ID
22936576800
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Google Scholar ID
_lRP1aUAAA
WoS Researcher ID
GSO-2246-2022
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hakan.cetinkaya.jpg (10.63 KB)

Sustainable Development Goals

NO POVERTY1
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ZERO HUNGER2
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GOOD HEALTH AND WELL-BEING3
GOOD HEALTH AND WELL-BEING
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QUALITY EDUCATION4
QUALITY EDUCATION
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GENDER EQUALITY5
GENDER EQUALITY
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CLEAN WATER AND SANITATION6
CLEAN WATER AND SANITATION
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AFFORDABLE AND CLEAN ENERGY7
AFFORDABLE AND CLEAN ENERGY
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DECENT WORK AND ECONOMIC GROWTH8
DECENT WORK AND ECONOMIC GROWTH
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INDUSTRY, INNOVATION AND INFRASTRUCTURE9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
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REDUCED INEQUALITIES10
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SUSTAINABLE CITIES AND COMMUNITIES11
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RESPONSIBLE CONSUMPTION AND PRODUCTION12
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CLIMATE ACTION13
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LIFE BELOW WATER14
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LIFE ON LAND15
LIFE ON LAND
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PEACE, JUSTICE AND STRONG INSTITUTIONS16
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PARTNERSHIPS FOR THE GOALS17
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54

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1533

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180

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Scholarly Output

14

Articles

11

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Supervised MSc Theses

2

Supervised PhD Theses

1

WoS Citation Count

22

Scopus Citation Count

23

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Projects

1

WoS Citations per Publication

1.57

Scopus Citations per Publication

1.64

Open Access Source

5

Supervised Theses

3

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Psychological Research2
A/Z : ITU journal of Faculty of Architecture1
British Journal of Psychology1
Cognitive Processing1
Journal of Cognition and Culture1
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Now showing 1 - 10 of 14
  • Thumbnail Image
    Article
    Citation - WoS: 2
    Citation - Scopus: 2
    SNARC effect in a transfer paradigm: long-lasting effects of stimulus-response compatibility practices
    (SPRINGER HEIDELBERG, 2025) Merve Bulut; Hakan Cetinkaya; Seda Dural; Bulut, Merve; Dural, Seda; Çetinkaya, Hakan
    The Spatial-Numerical Association of Response Codes (SNARC) effect refers to the phenomenon of faster left-hand responses to smaller numbers and faster right-hand responses to larger ones. The current study examined the possible long-lasting effects of magnitude-relevant stimulus-response compatibility (SRC) practices on the SNARC effect in a transfer paradigm. Participants performed a magnitude classification task including either SNARC-compatible or SNARC-incompatible trials as practice. They performed a parity judgment task in the subsequent transfer session administered five minutes one day or a week after the practice session. Results revealed significant SNARC effects after compatible practices and significant reverse SNARC effects after incompatible practices in all time-interval conditions. However a control group without practice showed no reliable SNARC effect. These findings suggest that the SNARC effect can be influenced by magnitude-relevant associations formed a week previously highlighting the long-lasting effects of magnitude-relevant SRC practices on the SNARC effect.
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    Article
    Citation - WoS: 3
    Citation - Scopus: 2
    Revisiting the SNARC effect: testing magnitude classification in a Turkish sample typically lacking the SNARC effect
    (ROUTLEDGE JOURNALS TAYLOR & FRANCIS LTD, 2025) Seda Dural; Hakan Cetinkaya; Ilgim Hepdarcan; Ezgi Gur; Ilayda Korkut; Dural, Seda; Korkut, Ilayda; Hepdarcan, Ilgim; Gur, Ezgi; Cetinkaya, Hakan
    This study investigates the SNARC effect in Turkish participants using a magnitude classification task to examine the roles of semantic influences and cultural experiences. While prior research has shown the absence of the SNARC effect in a parity judgment among Turkish participants who read from left to right our findings further confirm its absence in a magnitude classification task even when semantic demands are minimised. Instead a robust distance effect was observed pointing out the involvement of spatial number processing in the task. These findings are discussed in the context of possible multiple spatial mappings shaped by Turkey's unique cultural and historical background which may hinder the development of a dominant spatial-numerical association. Future research incorporating explicit spatial primes linked to various cultural experiences could clarify the mechanisms underlying the variability of SNARC effects and offer valuable insights into the relationship between cultural history and cognitive processes.
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    Article
    Citation - Scopus: 2
    Biophilic dimensions of products and their effects on user preferences
    (Istanbul Teknik Universitesi, Faculty of Architecture, 2022) Hakan ÇETİNKAYA; Gülname TURAN; Miray BOĞA; Turan, Gülname; Çetinkaya, Hakan; Boğa, Miray
    Biophilia is hypothesized as one of the defining concepts guiding human preferences of everyday life. Although “biophilia” has been well integrated as a design approach in Architectural and Urban Design it is yet to develop in industrial design. Employing a two-staged approach we aimed to define the biophilic characteristics of a product multidimensionally and examine their effects on the users’ preferences. The first stage consisted of empirical studies to describe the biophilic dimensions. This endeavor yielded a word set (N=78) that qualifies the biophilic dimensions (N=6). The words obtained consisted of biophilic design values and the hypothetical biophilic product dimensions that were proposed by researchers. Also we obtained a set of product images (N=18) to be used throughout the study. The second stage was designed to explore the effects of biophilia on user preferences. An expert group (N=120) assessed the associations between the words and product sets. Also a user group (N=1.206) rated how much they preferred these products. The data obtained from the experts and the users were analyzed to examine how the biophilic dimensions predicted the user preferences by regression analyses conducted on SPSS 27. The results revealed that the functional dimension has a significant effect on user preferences in both biophilic and non-biophilic/ biophobic cases while the psychological dimension has a significantly negative effect on user preferences just in non-biophilic/biophobic cases.
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    Article
    Magnitude-space representations in the n-back task: Long-term representations of magnitudes alter the working memory performance
    (Springer, 2025) Ilgım Hepdarcan; Hakan Çetinkaya; Seda Dural; Dural, Seda; Cetinkaya, Hakan; Hepdarcan, Ilgim
    Prior research has predominantly examined the role of working memory (WM) in tasks involving numerical information and spatial properties such as memorizing number sequences and performing parity judgment and magnitude comparison. In contrast to focusing solely on the effect of WM on number judgment tasks our study investigates how magnitude-space associations affect WM task performance emphasizing long-term representations specifically the concept of mental number line (MNL) compatibility (small items on the left large items on the right) in long-term memory (LTM). Moving from the idea of representations within LTM contribute to the functioning of WM during task execution we explore the effects of congruent incongruent and negative congruent numerical and non-numerical magnitude–space associations on magnitude-based 1-back (low WM load) and 2-back (high WM load) tasks. MNL compatible n-back and test items are congruent MNL compatible n-back and MNL incompatible (small on the right large on the left) test items (or vice versa) are incongruent and MNL incompatible n-back and test items are considered negative congruent. Because negative congruent and incongruent representations may not activate existing representations in LTM as congruent representations we expected worse WM performance in negative congruent and incongruent trials than in congruent trials. Results reveal that congruent and incongruent representations elicit more accurate and rapid responses than negative congruents suggesting that congruent and incongruent representations contribute to task execution. Additionally we observe a size effect for small numerical magnitudes and a reverse size effect for large physical magnitudes pointing towards the coactivation of LTM and WM in magnitude–space relations. © 2025 Elsevier B.V. All rights reserved.
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    Master Thesis
    Renk algılamada dilin rolünün bir görsel tarama göreviyle incelenmesi: Görsel yarı alan etkisi
    (2025) Cinoğlu, Özce; Çetinkaya, Hakan
    According to the Whorf Hypothesis, perception of world, thoughts and experience of the reality were influenced by the spoken language (Whorf, 1956). However, when the relationship between language and perception were evaluated through the functional organization of the brain, hemispheric lateralization becomes a significant factor. Previous research has shown that the right visual field (RVF) is more dominant than the left visual field (LVF) due to the left hemisphere's dominance in language processing (Gilbert et al., 2006). Building on this, the current thesis aimed to investigate the role of language and the visual half field effect on color perception using a visual search task, while also replicating the findings of Gilbert et al. (2006) in a Turkish sample. To achieve this, the visual search task was designed to assess the participants' ability to identify and discriminate the target colors presented in either the RVF or LVF under three different types of interferences: no interference, verbal interference and non-verbal (spatial) interference. The results revealed that language affected color discrimination in the RVF but not in the LVF. Reaction times were faster in the RVF for between group color pairs (BCP), whereas faster reaction times were observed in the LVF for within-category color pairs (WCP). Interestingly, the lateralization effect in color identification persisted despite both verbal interference and non-verbal interference. The thesis was able to replicate the findings of Gilbert et al. (2006) with Turkish native speakers, extending their results. It demonstrated that the Whorf Hypothesis and hemispheric lateralization yield consistent findings and are applicable across different cultures and languages.
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    Article
    Citation - WoS: 7
    Citation - Scopus: 7
    No SNARC Effect Among Left- to-Right Readers: Evidence From a Turkish Sample
    (UNIV ECONOMICS & HUMAN SCIENCES WARSAW, 2023) Merve Bulut; Ilgim Hepdarcan; Ezgi Palaz; Hakan Cetinkaya; Seda Dural; Bulut, Merve; Dural, Seda; Hepdarcan, Ilgim; Palaz, Ezgi; Cetinkaya, Hakan
    The spatial-numerical association of response codes (SNARC) refers to the faster left-hand respons- es to smaller numbers and faster right-hand responses to larger numbers. Although easily repli- cable in Western cultures the prevalence of the SNARC effect in other cultures has long been an issue. In the current study we aimed to replicate the SNARC effect in a parity judgement task with Turkish participants (N=66) whose reading habits are entirely left-to-right. The results revealed no SNARC effect. To the best of our knowledge this is the first finding indicating the absence of regu- lar SNARC effect among left-to-right readers in a classical parity judgement task. Based on these findings we suggest that investigations of cultural influences on spatial-numerical associations should take a broader perspective rather than only focusing on reading habits.
  • Thumbnail Image
    Article
    Representational Context Modulates the Direction and Transiency of Practice Effects on SNARC
    (SAGE Publications Ltd, 2026) Palaz, Ezgi; Cetinkaya, Hakan; Dural, Seda
    The Spatial-Numerical Association of Response Codes (SNARC) effect typically results in faster left-hand responses for small numbers and right-hand responses for large numbers, aligning with the concept of the mental number line (MNL). It is a robust but a flexible phenomenon that can reverse direction depending on the spatial-numerical mappings employed. This study investigates the potential modulatory effects of two contrasting representational contexts (ruler vs. clockface) on the emergence and persistence of the SNARC effect under two opposing spatial-numerical practices (MNL-compatible vs. MNL-incompatible). In Experiment 1, a magnitude classification task was employed as a practice session including either MNL-compatible or MNL-incompatible stimulus-response mappings, and the transfer and transiency of practice effects were examined by engaging participants in three test parity judgment tasks administered 5 min, 1 day, and 1 week after the practice session. In Experiment 2, different representational contexts were introduced during practice sessions. Experiment 2a utilized an image of a ruler as the context consistent with the MNL, while Experiment 2b employed a clockface image as an inconsistent context. Participants underwent testing three times to assess changes in performance over time. Results revealed that MNL-compatible practice effects did not transfer while MNL-incompatible practice effects resulted in a reverse SNARC effect persisting for up to 1 day. However, introducing the ruler context eliminated this transfer, while the clockface context reduced the persistence of the practice effect.
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    Article
    Citation - WoS: 4
    Citation - Scopus: 4
    Practice-induced SNARC: evidence from a null-SNARC sample
    (SPRINGER HEIDELBERG, 2024) Ezgi Palaz; Hakan Cetinkaya; Zeynep Tuncali; Bengi Kamar; Seda Dural; Dural, Seda; Tuncali, Zeynep; Palaz, Ezgi; Çetinkaya, Hakan; Kamar, Bengi
    The mental representation of numbers inherently involves a spatial organization often positioning smaller numbers to the left and larger numbers to the right. The SNARC effect characterized by faster responses to small numbers using the left hand and vice versa for large numbers is typically attributed to this left-to-right oriented mental number line (MNL). However the direction of the SNARC effect seems to rely on reading direction with most research exploring these mechanisms conducted within left-to-right reading cultures where the SNARC effect is prevalent. This study takes advantage of a sample from a left-to-right reading culture that does not exhibit the SNARC effect allowing us to isolate and elucidate the stand-alone effects of recent experiences on SNARC. Therefore the current study aims to investigate how MNL-compatible and MNL-incompatible practices induce an effect within a sample lacking the SNARC effect. To accomplish this we reinvited the individuals from the sample which had previously shown no SNARC and retested those who agreed to take part in the current study after an MNL-compatible or MNL-incompatible practice manipulation. The findings revealed an absence of the SNARC effect with MNL-compatible practices. Conversely MNL-incompatible practices yielded a reverse SNARC effect. These results prompt a discussion on SNARC mechanisms within the framework of practice effects.
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    Article
    Citation - WoS: 3
    Citation - Scopus: 3
    Increase in physiological inhibitory control results in better suppression of unwanted memories
    (John Wiley and Sons Ltd, 2023) Turan Gunduz; Hasan Gunduz; Hakan Çetinkaya; Cetinkaya, Hakan; Gunduz, Hasan; Gunduz, Turan
    Forgetting or suppressing a memory with unwanted content is just as important as remembering a desirable one. In addition to emphasizing the role of inhibitory control in memory suppression processes neuropsychological studies have indicated that an intentional inhibition targeting a brain area may exert its inhibitory effects in seemingly unrelated areas through a common inhibitory network. In this study we aimed to investigate whether the suppression of unwanted memories can be strengthened by recruiting an inhibitory task that can be simultaneously performed with a memory suppression task. Therefore we manipulated the level of urinary urgency-induced inhibition of participants (N = 180) and test its effect on the suppression of unwanted memories using a Think/No-Think (T/NT) task. The results of our study indicated that individuals with high levels of urinary urgency demonstrated greater memory suppression compared to those with low urinary urgency. Findings and their implications are discussed within the context of cognitive and clinical perspectives and recommendations are made for future research. © 2023 Elsevier B.V. All rights reserved.
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    Master Thesis
    SNARC görüntüsünün büyüklük karşılaştırma denklik değerlendirme süreçleri ile incelenmesi
    (2024) Göker, Deniz; Çetinkaya, Hakan
    Sayısal bilişin önemli bir parçası olan Mekânsal Sayısal Yanıt Kodlaması (SNARC), küçük sayılara sol elle ve büyük sayılara sağ elle daha hızlı yanıt verme anlamına gelir. SNARC etkisine sıklıkla eşlik eden etkilerden biri Yanıt Kodlarının Belirginliği (MARC) olarak adlandırılır ve tek sayılara sol elle, çift sayılara ise sağ elle verilen hızlı yanıtlarla tanımlanır. İki Koşullu Yol Modeli, sayılar zihinde uzamsallaştığında yanıtları nasıl etkilediğini açıklamak için iki zihinsel yol önerir: koşullu ve koşulsuz yol. Bu tezde, İki Koşullu Yol Modeli aracılığıyla SNARC etkisi ve MARC etkisi araştırılmıştır. Zihinsel Sayı Çizgisi (MNL) uyumluluk durumuna göre iki gruptan oluşan çalışmada, katılımcılara büyüklük sınıflandırma ve tek/çift sayı yargılama görevleri dönüşümlü görevler olarak sunulmuştur (N = 79). Sonuçlar, MNL uyumlu grupta düz SNARC etkisini gösterirken MARC etkisi gözlenmemiştir. Bununla birlikte MNL uyumsuz grupta ters SNARC etkisi ve ona eşlik eden ters MARC etkisi gözlemlenmiştir. Bu sonuçlar, bu etkilerin esnek olduğunu ve İki Koşullu Yol Modelinin önerdiği gibi koşullu ve koşulsuz yollar arasındaki etkileşimlerden kaynaklandığını desteklemektedir. Bulgular, soldan sağa okuma/yazma alışkanlığı olan ve daha önce düzenli SNARC etkisinin gözlemlenmediği bu örneklem için önem taşımaktadır.