Thesis Center Research Articles

Bibliometric Analysis of Green Themed Graduate Theses to Achieve Sustainability Goals

People all over the world are striving to achieve 17 interconnected ambitious sustainable development goals. This study is planned to examine green-themed graduate theses required for sustainability, to emphasize the importance of sustainability, to reveal the current trend and to guide future researchers. A search was conducted between 2000 and 2023 with the keyword green (economy, trust, logistics, marketing, purchase intention, product, management) from the National Thesis Center database of the Turkish Higher Education Institution and 413 theses were reached. The data was analyzed with the bibliometric method using Word Art, Microsoft Word 2015, Microsoft Excel 2015 and SPSS 26 package programs. At the end of the analysis, it was seen that the vast majority of theses were master's theses and the language of writing was Turkish. It was seen that the vast majority of theses were written in the social sciences institute and business department of state universities. Quantitative data was mostly used in theses. The vast majority of theses related to sustainability are research on green marketing and green products. In order to achieve sustainable development goals, university and industry cooperation should be increased and universities should guide society.

Analysis of cardiovascular surgery specialization theses and their publication rates

Aim: This study aimed to analyze the specialization theses in the field of cardiovascular surgery in Türkiye, and examine their rates of conversion to scientific publications. Material and Methods: Specialization in medicine theses in the field of cardiovascular surgery published in Türkiye from 2015 to 2020 were evaluated using the Council of Higher Education Thesis Center database. For each specialization thesis, details such as the year, institution, city, study design, advisor’s title, and author information were recorded. The conversion of theses into scientific publications was assessed using Google Scholar, PubMed, Dergipark, and TR Index databases based on the thesis title, advisor, and author information. Results: A total of 204 specialization theses in medicine were examined in the study. Of the thesis authors, 171 were men (83.3%) and 33 were women (16.2%). When categorized by institutions, 130 theses (63.7%) were affiliated with institutions in the three major cities. It was observed that 79 of the evaluated theses (38.7%) were turned into scientific publications. The conversion rate into scientific publications was significantly higher in institutions affiliated with the University of Health Sciences (p=0.002). A significant relationship was observed between the study design, the index of the publishing journal, and the citation status (p=0.029, p<0.001, respectively). Conclusion: The findings obtained in the present study showed that the majority of specialization theses in cardiovascular surgery were not turned into scientific publications. We believe that collaboration with professional associations and the Medical Specialty Board may contribute positively to the publication rate of specialization theses.

The effectiveness of telemedicine applications in mental health services: a meta-analysis study.

This study was conducted to reveal the effectiveness of telemedicine applications in mental health services. For this meta-analysis study, data were obtained by searching PubMed, Web of Science, EBSCOhost, Google Scholar, and YÖK Thesis Center databases for the last 5years in September-December 2023. After the review, 24 studies were included. In this meta-analysis, it was found that telemedicine interventions in mental health services decreased the depression level of individuals (SMD - 0.168, 95% CI - 0.315 to - 0.021; Z = - 2.243; p < .05). In addition, it was determined that the duration of the intervention played a role in the effectiveness of telemedicine interventions applied to individuals. In addition, it was determined that the type of intervention, the country where the research was conducted, and the patient group did not play a role in the effectiveness of telemedicine interventions applied to individuals. Telemedicine applications in mental health services can play an effective role in reducing the burden of chronic mental illness and improving patient outcomes.

The Cross-Sectional Association of Health Literacy With Healthy Lifestyle Behaviors in the Turkish Population: A Systematic Review and Meta-Analysis.

To meta-analytically investigate the cross-sectional association between health literacy (HL) and healthy lifestyle behaviors (HLBs) in the Turkish population. Web of Science, PubMed, Scopus, EBSCO, DergiPark, TRDizin, and Türkiye Council of Higher Education Thesis Center. Not accessible in Turkish or English in full text; not on the Turkish population; addressed e-HL, digital HL, mobile HL or corporate HL; addressed HL in a specific context; did not seek any association between HL and HLBs. Cross-sectional studies that reported a correlation coefficient or any convertible equal statistical measure for the association between HL and HLBs. Two reviewers independently screened the articles, extracted the data from the included studies into a structured form and assessed their methodological quality. We conducted meta-analyses and reported the characteristics, outcomes, and quality assessment of studies. Of 3833 records accessed we included 52 that fulfilled the eligibility criteria. Our primary findings demonstrated positive low-to-moderate associations between HL and health-promoting behaviors (r = .32 [CI:.30-.35; I2 = .00]), HL and physical activity (r = .23 [CI:.18-.27; I2 = .12]), and HL and vaccination (r = .12 [CI:.07-.17; I2 = .00]). In contrast, HL was not significantly associated with non-smoking (r = .02 [CI:-.02-.36; I2 = .09]), healthy diet (r = .02 [CI:-.01-.06; I2 = .00]), and screening (r = .07 [CI:.04-.11; I2 = .07]). However, our sensitivity and meta-regression analysis results suggested that the association of HL with healthy diet seems to increase with age. On the other hand, we failed to find any convincing evidence of any of the included variables affecting the association between HL and all types of HLBs (r = .17, I2 = 95.81%). HL has the potential to improve the HLBs of Turkish individuals, however, there is a need for better understanding of the possible underlying determinants of the association between them.

Effects of Web-Based Psychotherapeutic Interventions on Depression in Mood Disorders: A Meta-Analysis Study.

To investigate the effects of web-based psychotherapeutic interventions on depression among individuals with mood disorders. For this meta-analysis study, data were obtained from October to December 2023 by searching PubMed, Web of Science, EBSCOhost, Google Scholar, and YÖK Thesis Center for articles published in the past 5 years. In the first stage of the search, 12,056 records were obtained. After removing duplicate studies, 4,910 records were considered for title and abstract review. After this evaluation, 139 studies were identified for full-text review. After the review, six studies reporting results on the effectiveness of web-based psychotherapeutic interventions on depression among individuals with mood disorders were ultimately included. Web-based interventions had significant positive effects and provided decreases in depression levels (standardized mean difference = -0.168, 95% confidence interval [-0.315, -0.021]; Z = -2.243; p < 0.05). Web-based interventions for mood disorders may play an effective role in reducing the burden of chronic mental illness and improving patient outcomes. [Journal of Psychosocial Nursing and Mental Health Services, xx(xx), xx-xx.].

The relationship between health literacy and healthy lifestyle behaviors: A meta-analysis.

Health literacy and healthy lifestyle behaviors are both pivotal elements for public health improvement. This meta-analysis aims to scrutinize studies investigating the nexus between health literacy and healthy lifestyle behaviors and to examine the correlation between health literacy and such behaviors. Studies conducted from 2013 to 2023 exploring the association between health literacy and healthy lifestyle behaviors, as well as the impact of gender and chronic disease status on health literacy, were included. The selection criteria for the meta-analysis involved a literature search utilizing databases such as PubMed, Google Academic, Web of Science, and the National Thesis Center. The keywords "health literacy" and "healthy lifestyle behaviors" were employed, identifying 206 studies. Subsequently, 53 studies meeting predetermined criteria were deemed suitable for inclusion in the meta-analysis. The analysis of the relationship between health literacy and healthy lifestyle behaviors revealed no publication bias. Despite heterogeneity among the studies, the correlation effect size was determined to be 0.278 using the random effect model. In the meta-analysis examining the effect of gender on health literacy, no publication bias was detected. Since there was heterogeneity among the studies, the average effect size was calculated as 0.078 according to the random effect model. Regarding the meta-analysis on the effect of chronic disease status on health literacy, no publication bias was observed, and due to homogeneity between the studies, the average effect size was determined to be -0.098 using the fixed effect model. A positive yet weak relationship was identified between health literacy and healthy lifestyle behaviors. Notably, gender was a significant sociodemographic factor affecting health literacy, with higher levels observed in women. Moreover, individuals without chronic diseases exhibited higher mean health literacy scores than those with chronic diseases.

Content Analysis of Postgraduate Theses About the Relationship Between Autism Spectrum Disorder and Physical Activity in Türkiye in 2010-2023

The aim of this study is to evaluate the postgraduate theses on the relationship between autism spectrum disorder (ASD) and physical activity registered at the YÖK National Thesis Center between the years 2010-2023 and to examine these theses using the headings of descriptive features, content and methodology. A total of sixty-one (61) theses, forty-four (44) master's theses and seventeen (17) doctoral theses, on the relationship between ASD and physical activity between the years 2010-2023 were included in the study. The data of the study were obtained by using the document review model, which is one of the qualitative research methods, and analyzed by the content analysis method. Within the scope of the findings obtained from the study, it is seen that the postgraduate theses were mostly published between the years 2019-2023 and most of them were completed at Gazi University. The findings obtained show that the master's (49.9%) and doctoral (47%) theses were mostly carried out in Health Sciences Institutes. Thirty-three (33) studies were conducted in the Department of Physical Education and Sports, including twenty-one (21) master's theses (47.7%) and twelve (12) doctoral theses (70.5%). In addition, four (4) master's theses (9%) and two (2) doctoral theses (11.7%) were conducted in the Department of Physical Education and Sports Teaching. A total of twenty-seven (27) studies, nineteen (19) master's theses (41.3%) were conducted by advisors with the title of Assistant Professor, while ten (10) doctoral theses were conducted under the leadership of advisors with the title of Prof. Dr. (%47.6). The sample group of the master's and doctoral studies mostly consists of individuals/children with Autism Spectrum Disorder (ASD). In addition, the sample group in master's theses (51.5%) and doctoral theses (28.2%) consisted of parents. Of the master's theses in the years 2014-2018 and 2019-2023, 29-30% were studies completed in the field of motor skills and 11-12% in the field of social skills. Of the doctoral theses in the years 2019-2023, 36.8% were studies completed in the field of motor skills and 15.7% in the field of social skills. It was seen that the examined master's and doctoral theses were mostly completed in metropolitan cities such as Istanbul and Ankara. Again, it was understood that postgraduate theses were mostly completed in special education and rehabilitation centers. Quantitative research was mostly applied in postgraduate theses (79.5% of master's degrees, 64.6% of doctoral studies) and the majority used the criterion sampling method (47.7% of master's degrees, 76.4% of doctoral studies). It was also seen that both master's and doctoral theses were conducted in experimental and case study research models. While test battery (41%) and scale (17.9) were used in master's theses, observation form (19.9) and scale (19.9) were used in doctoral theses. Finally, criterion sampling and random sampling methods were preferred in both master's and doctoral theses. As a result, it was seen that the studies completed on individuals with Autism Spectrum Disorder (ASD) increased between 2019-2023 and focused especially on motor skills and social skills.

A Content Analysis on Theses Related to Inquiry-Based Learning Approach

The aim of this study is to investigate 32 master's and 16 doctoral theses in the Higher Education Thesis Center (http://tez2.yok.gov.tr/), which were conducted between 2008 and 2022 in science education and which are about inquiry-based learning approach, by content analysis method. The data obtained through document analysis were analyzed by content analysis. In addition, it was aimed to identify the frame on inquiry-based learning in science education and to identify deficiencies and orientations. Document analysis method was used in the study. "Science Education Thesis Classification Form" was created by the researchers by examining the categories and themes created in the content analysis studies in the literature. Theses were accessed by searching the words "inquiry-based" and "inquiry-based learning" on the Council of Higher Education Thesis Center. Theses were examined in the categories of thesis type, year of publication, research method of the thesis, research model type of the thesis, sample size of the thesis, sample level of the thesis, data collection tool of the thesis and data analysis method types of the thesis. The data obtained were calculated with MS-Excel program. The analyzed postgraduate theses were evaluated separately as master's and doctoral theses. Frequency and percentage values were given in tables. As a result of the research, it was concluded that while the majority of the theses examined were master's theses, the theses conducted within the scope of doctorate were much less; quantitative research model was preferred more in the studies, and the most studies were conducted in 2019. It was found that undergraduate students were selected as the sample in the majority of the theses within the scope of the study; fewer studies were conducted at the primary education level, and the range of 51-100 was the most preferred number in sample size. At the end of the study, suggestions were made for future studies.

Self-presentation in metaverse environments from a psychological perspective

This research aimed to investigate the psychology-related factors of self-presentation in Metaverse environments using the keywords "Metaverse," "self," "self-presentation," and "psychology." The universe of the research is the research on Metaverse and self-presentation in Turkey and the world between 1902 and 2023 in YÖK National Thesis Center, Google Scholar, ProQuest, ResearchGate databases with the keywords "Metaverse," "self," "self-presentation," "psychology." 39 articles, books, and dissertation materials were selected as the research sample. In the research, a general research trend was revealed by examining the data of the information contained in the articles, books, master's and doctoral theses written about the concepts of "Metaverse" and "self" in the world and in Turkey as a result of the research, it is assumed that self-presentation in the Metaverse will occur through luxury consumption, new technologies such as avatars and NFT, and with the influence of digital consumer culture.

Motivation Theories Affecting Organizational Commitment in the Workplace

In today's working life, as competition is increasing, ensuring the loyalty of employees to the organization is important for organizations to survive. In the literature, it is considered important to determine employees' attitudes toward work through motivation theories in order to ensure commitment to the organization. The sustainability of business organizations is shaped by the level of commitment of the organization's employees, and the goal of organizations is to ensure that their employees do not leave the organization, which draws attention to the importance of motivation theories for organizations. The subject of the study was to explain the evaluation of organizational commitment of organizational employees by providing support from motivation theories. The purpose of the study is to compile the attitudes of employees toward their work environment, motivation theories that affect the organizational commitment of individuals, and studies in the literature in the field of industrial and organizational psychology. The method of the research is based on the studies on organizational commitment and motivation theories in Turkey and the world between 1948 and 2023 in YÖK National Thesis Center, Google Scholar, ProQuest, ResearchGate databases such as "organization", "organizational commitment", "motivation", "motivation theories", "industrial and organizational psychology". It was reached by searching with the keywords. As a result of the search, the universe consisted of 75 articles, books, and master's and doctoral theses. 68 articles, books and dissertation materials were selected as the sample of the research. The importance of the study was explained by including the concept of organizational commitment, factors affecting organizational commitment and behavioral outcomes, motivation theories, employees' values regarding work life, factors affecting their organizational commitment, studies in the literature were evaluated and discussed within the framework of industrial and organizational psychology.

A SYSTEMATIC ANALYSIS OF AUTEUR THEORY IN CINEMA IN GRADUATE THESES IN TURKEY

Bibliometric analysis is a method that examines the numerical data and characteristics of publications, articles, theses or other academic sources within a particular subject, field or discipline. In this study, bibliometric analysis is used to reveal the current view of graduate theses in the Department of Radio, Television and Cinema in the YÖK Thesis Center, which are examined with auteur theory as a method, to identify gaps in the literature and to help future studies by providing reports. For this purpose, the researchers systematically searched the YÖK Thesis database at the end of December 2023 using the key terms ‘auteur’, ‘auteur theory/theory’. As a result of the search, a total of 252 graduate thesis studies were accessed. Two limitations were imposed on the thesis studies accessed: The theses must have been written in the Department of Radio, Television and Cinema and the theses must have been analyzed with auteur theory as a method. As a result of the limitation imposed on 252 thesis studies, the studies that were not included in the limitation were excluded and the number of samples was reduced to 48 studies. It was observed that the first thesis study on auteur theory was conducted in 2002. In this context, the limitation of the study was determined as the years 2002-2023. Based on the information provided, this study uses bibliometric analysis to analyze, interpret and report the distribution of theses on auteur theory between 2002 and 2023, their distribution by years, their distribution by universities, the distribution of the language in which the theses were written, the gender distribution of thesis authors, the distribution of thesis advisors, the directors examined within the framework of auteur theory and the country cinema distribution of the directors.

Examination of Postgraduate Theses on ERAS Protocol Applications in the Field of Nursing in Türkiye

Aim: This study is designed to examine postgraduate theses conducted in the field of nursing in Türkiye focusing on the Enhanced Recovery After Surgery (ERAS) protocols. Method: In this retrospective literature review, theses conducted in the field of nursing between 2011-2023, focusing on the utilization of ERAS practices, were examined. The inclusion criteria for the theses retrieved from the National Thesis Center database of the Higher Education Council were as follows: having key terms such as "Postoperative enhanced recovery protocol," "Enhanced recovery," "Oral carbohydrate," or "ERAS" in their thesis titles, and being conducted by departments of Nursing and/or Nursing Science. After categorizing the theses into master's and doctoral theses, they were examined in chronological order. Results: The screening process identified 21 theses conducted between 2011-2023, excluding one thesis that was inaccessible for full text. All theses were written within the last 12 years, with 3 theses at the doctoral level and 17 at the master's level. When examining the study designs, one these was a meta-analysis, 13 were descriptive, and 6 were conducted using experimental methods. Among the studies, 75% were conducted with patients, 10% with healthcare workers, and 10% with nursing students. Conclusion: The nursing theses conducted on ERAS have concluded that ERAS practices are effective based on their intended purposes. Additionally, it has been determined that healthcare professionals have insufficient knowledge regarding ERAS practices. Therefore, it is recommended to increase the number of studies conducted in the field of nursing to promote the widespread implementation of ERAS practices and raise awareness.

Current Geography Studies in Turkey

The main purpose of the study is to evaluate the master and doctoral theses completed in the field of geography in the National Thesis Center of Turkey YOK between 2020-2024 from a holistic perspective and to bring a new perspective to the studies to be conducted. In this context, a database consisting of thesis such as the year, subject, type, method, university of the author and the geographical region where the university is located was created. The database created was examined by subjecting it to a detailed analysis process. Within the scope of the study, a total of 876 graduate thesis were analysed. Of these thesis, 680 master programme and 196 belong to doctoral programme. Master thesis are more than doctoral thesis. The highest number of master thesis were produced in 2022, with 199 thesis. In contrast, a noticeable increasing trend is observed in doctoral thesis over the years. In both master (333) and doctoral (111) programmes, most thesis on human and economic geography were produced. This is followed by thesis on (master (262), doctoral (69)) physical geography. In human and economic geography, tourism geography (76) was studied the most compared to other subjects, while in physical geography, geomorphology (98) was studied the most. In terms of the methods used in the thesis, qualitative methods (298) are preferred more in master studies, while quantitative methods (102) are used more in doctoral thesis. Among the universities that produced the highest number of thesis, Atatürk University (59) stands out in master programme and Istanbul University (34) in doctoral programme. In the evaluation according to the geographical region of the university where the author is located, the Marmara Region ranks first in both master and doctoral programmes. These results will allow a better understanding of academic developments and trends in the field of geography and will be a direction for future research. In this context, the results of this study provide important findings on current geography theses in Turkey. According to the results of this study, it is thought that increasing the number of postgraduate thesis in the field of geography and improving the quantity and quality of students who want to do postgraduate education in the field can give a positive impetus to Turkey's development.

An Analysis of Graduate Theses Conducted in the Field of Special Education in Türkiye

Special education is a field that has been valued in Türkiye especially in recent years. The aim of this study is to examine the types of postgraduate theses conducted in the field of special education in Türkiye between 2000 and 2023, their intensity in the field of special education and their distribution according to years. The research is a literature review designed in qualitative research model. The keywords of special education, autism, down syndrome, learning disability, intellectual disability, mental deficiency, giftedness, superior intelligence and special talented were determined to serve the purpose of the research. The keywords were searched from the National Thesis Center database. The data were analyzed using descriptive analysis. Considering the titles of the theses, 2991 postgraduate theses including master's, doctorate, specialization in medicine and proficiency in art were reached. The types of postgraduate theses reached, the distribution of theses among keywords and the change of theses according to years are presented in graphs. As a result, it was observed that master's theses were predominant in postgraduate theses in the field of special education between 2000 and 2023, the most focused special education field was autism, and there was a general increase in theses by years, except for 2020.

The Use of Nursing Theory and Model in Mental Health and Psychiatric Nursing Doctoral Theses: Turkiye Sample

Aim: The aim of this study is to identify nursing models used in doctoral theses in psychiatric and mental health nursing. Material and Methods: In this descriptive-type retrospective document analysis study, theses in mental health and psychiatric nursing departments of health sciences institutes were reviewed at the National Thesis Center of the Council of Higher Education on from September to October 2023. The study was completed with 14 doctoral theses. Word and Excel programs were used to record and analyze data. Results: The Roy Adaptation Model and then the Neuman Systems Model were mostly used in doctoral theses. It was determined that four theses were randomized controlled, and six theses were done within the scope of community mental health nursing when the sample group was examined. Conclusions: The Roy Adaptation Model has positive effects on issues such as emotional expression, self-esteem, and treatment areas. As a sample group, there was a tendency towards preventive mental health services. Experimental designs with control groups were used in doctoral theses, and four theses were determined to be randomized controlled.

Evaluation of PhD Theses in the Field of Social Studies Education in the USA and Turkey (2018-2024)

In this study, it is aimed to examine the doctoral theses prepared in the field of social studies education in the USA and Turkey between the years 2018-2022 in terms of various categories. For this purpose, 113 doctoral theses accessed through ProQuest database and 121 doctoral dissertations accessed from YÖK Thesis Center database were analyzed by document analysis, one of the qualitative research methods. Theses examined in the study were analyzed in terms of 7 different categories such as the year, the university, research approach, research design, study group/sample, data collection tools and the subject. According to the findings obtained from the research, in both countries between 2018-2022, at least the thesis in the field of social studies education was prepared in 2020, while the year 2021 was the year in which the most theses were prepared in this sense. While “University of South Carolina” is the university where the most theses are produced in the USA, “Gazi University” comes first in Turkey. While more qualitative research approach, research designs and data collection tools were preferred in the USA, mixed research approach was mostly preferred in studies in Turkey. While researchers in the USA mostly work with teachers, the most studied sample/study group in Turkey is students. While doctoral theses in the field of social studies education in the USA were mostly prepared on teaching methods, due diligence, teacher self-efficacy, education policies and curriculum, theses in Turkey were generally prepared on teaching methods, value and skill acquisition. The results of the research show that the studies in the field of social studies education in Turkey tend to repeat, especially in terms of subject. In this sense, it is thought that this study can be a guide for researchers in Turkey to produce different and original researches.

Utilization of Theoretical and Conceptual Frameworks: An Analysis of National Mathematics Education Theses Published in 2019-2023

This study aimed to examine the use of theoretical and conceptual frameworks in master's and doctoral theses published in the field of mathematics education in Turkiye between 2019 and 2023. For this purpose, a total of 237 master's and doctoral theses downloaded from the Council of Higher Education national thesis center were analyzed within the scope of the method and the framework used. Given that master's and doctoral theses in the field of mathematics education were reviewed, the document analysis method was utilized. The theses were analyzed based on characteristics: methodology (quantitative, qualitative, mixed research paradigm) and framework (theoretical, conceptual, theoretical and conceptual, other). In the analysis phase, the distribution of theses according to types and years was also examined. The findings indicated that the majority of thesis studies were conducted using a qualitative method within a theoretical framework. This was followed by quantitative studies using a theoretical framework and mixed-method studies within a theoretical framework. Additionally, there were qualitative studies classified under other and qualitative studies using a conceptual framework. The qualitative thesis studies using the theoretical framework were predominant and that these were mostly master's theses and published in 2023. The findings were discussed in the light of the relevant literature and suggestions were made for future research.

An Analysis of PHD and Master's Thesis on Marketing Communication Conducted Between 1999-2023 in Communication Research

Marketing communication is a process that covers both consumer behavior and businesses' development of new marketing strategies. For this reason, marketing communication is a comprehensive subject area that has gained a significant place in academic studies, especially in the last 20 years, and on which scientific research has been conducted. Both the growing capacities and production volumes of businesses and the changing consumer make it necessary to carry out marketing studies. In this context, the aim of this study is to conduct detailed research on the theses completed in the national literature in the field of marketing communication. In this context, as a result of the detailed examination conducted through the National Thesis Center (YOKTEZ), 64 master's and 17 doctoral theses completed on marketing communication between 1999 and 2023 were identified. 8 of these theses could not be accessed (since they were not accessible via YOKTEZ), and 81 of them were evaluated using the content analysis method. In the study, data provided from documents; It is discussed under seven subheadings: type of thesis, gender, university, department, method, data collection and analysis technique and year category. As a result of the analysis, information was obtained about the nature, trends and prominent elements of academic postgraduate theses in the field of marketing communication. In particular, it is noteworthy that female researchers have a higher rate of writing master's theses on marketing communications and that the highest number of theses are in the field of Public Relations and Promotion. These findings show how important factors such as gender and field of expertise in the field of marketing communications are reflected in research.

The Effect of Student-Centered Teaching Methods and Techniques on Academic Achievement in Life Sciences Teaching: A Meta-Analysis Study

In this study, it was aimed to determine the general effect of student-centered teaching on students' academic achievement in life science teaching. For this purpose, 25 theses scanned in YÖK Thesis Center, having open access permission and methodologically meeting the criteria for inclusion in meta-analysis constituted the data of this study. From 25 thesis studies, 26 effect values were calculated by meta-analysis method. Cohen's g value was used to determine the effect values. The studies included in the meta-analysis were first tested for publication bias using the Rosenthal method and funnel plot. In addition, Z value, significance of Z value, Q value and chi-square distribution values at 25 degrees of freedom were used to decide the meta-analysis model. It was found that the studies included in the meta-analysis did not show publication bias and were heterogeneously distributed. Accordingly, meta-analysis was conducted according to the random effects model. According to the findings obtained in the study, it was seen that each study included in the analysis independently positively affected students' academic achievement. It was determined that the overall effect size of the studies integrated according to the random effects model was 1.028. From this point of view, it was concluded that student-centered teaching methods and techniques in life science teaching have a large positive effect on students' academic achievement.

The effect of psychotherapeutic interventions on posttraumatic stress disorder symptoms, depression and self-esteem in women exposed to violence: a systematic review and meta-analysis

This study aimed to reveal the level of effect of psychotherapeutic interventions on post-traumatic stress disorder symptoms, depression, and self-esteem in women who had been exposed to violence. For this systematic review and meta-analysis study, PubMed, Web of Science, EBSCOhost, Google Scholar, and YÖK Thesis Center databases were searched without any year limitation in August-December 2022, and 28 studies were included. The data were synthesized using meta-analysis and narrative methods. This systematic review and meta-analysis found that psychotherapeutic interventions for women exposed to violence were effective on post-traumatic stress disorder symptoms in individuals (SMD: -0,590, %95 CI: -0,893- 0.196; Z= -2,937, p = 0.003, I2= %93,59). Psychotherapeutic interventions had a significant effect on women’s depression levels in favor of the intervention group, and there was high heterogeneity between the studies (SMD: -0,475, %95 CI: -0,838- 0.113; Z= -2,569, p = 0.010, I2= %90,68). Subgroup analyses showed that cognitive behavioral therapy was effective in the treatment of intimate partner violence. It was also found that psychotherapeutic interventions did not affect women’s self-esteem levels. Psychotherapeutic therapies for women who have experienced violence have a favorable impact on them and improve their mental health.