Psikoloji Bölümü Yayın Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/417
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Editorial The Bright and Dark Sides of Work Life" Tpd Work and Organizational Psychology Special Issue(Turkish Psychologists Assoc, 2019) Sumer, H. Canan; Goncu-Kose, Asli; Toker, Yonca; Ok, A. Basak; Gokalp, Aysu; Mete, Ipek; Demircioglu, Zeynep IsilArticle Citation - WoS: 6Investigation of the Psychometric Properties of the Turkish Form of Subjective Memory Complaints Questionnaire(Gunes Kitabevi Ltd Sti, 2013) Ozel Kizil, Erguvan Tugba; Baştuğ, Gülbahar; Duman, Berker; Altintas, Ozge; Kirici, Sevinc; Bastug, Gulbahar; Baran, Zeynel; Altunoz, Umut; PsikolojiIntroduction: Amnestic type of mild cognitive impairment (MCI) is characterized by the presence of subjective memory complaints and impairment of memory tests. This study aims to investigate the validity and reliability of the Turkish Version of the Subjective Memory Complaints Questionnaire (SMCQ). Materials and Method: The study sample consisted of 45 MCI patients and 44 healthy elderly controls. The SMCQ is a 14-item, "yes-no" questionnaire which evaluates the severity of subjective memory complaints. The discriminant validity of SMCQ was evaluated by comparing the scores of the two groups. For concurrent validity, the correlations between SMCQ and two widely-used cognitive screening tests (MMSE and ADAS-Cog) were calculated. ROC analysis was performed to test the diagnostic validity. For reliability analysis, internal consistency was calculated. Results: SMCQ scores of the patients were higher than the controls. SMCQ scores of the subjects were positively correlated with ADAS-Cog and negatively correlated with MMSE scores. Cronbach's value was 0.83. ROC analysis yielded a sensitivity of 80% and a specificity of 66% (cut-off=4.5). Area under the curve was 0.843. Conclusion: SMCQ is a valid and reliable instrument that can be used for the assessment of SMC in elderly patients. However, community based studies should be carried out for suggesting SMCQ as a screening tool.Article Citation - WoS: 3The Relationship Among Leadership Style, Sex of Leader, and Sex of Evaluator in the Evaluation of Leadership Behavior(Turkish Psychologists Assoc, 2011) Ugurlu, Ozanser; Uğurlu, Ozanser; Hovardaoglu, Selim; PsikolojiThe purpose of the article was to investigate the relationships among leadership style, sex of leader, and sex of evaluator in the evaluation of leadership behavior in a student sample from Turkey. In order to reach the goal, leadership style and sex of leader were manipulated to prepare four vignettes as autocratic female leader, democrat female leader, autocratic male leader, and democrat male leader. The participants were 386 university students from Middle East Technical University (199 males and 187 females; M=21.74; SD=1.56). After reading one of the vignettes, the participants evaluated the leader by filling out the Evaluation of Leadership Behavior Scale. A 2 (sex of leader: female - male) X 2 (leadership style: autocratic - democrat) X 2 (sex of evaluator: female - male) ANOVA was performed on the evaluation of leadership behavior. Results demonstrated that there was a significant main effect of leadership style. As expected, participants evaluated democratic leader more positively than autocratic leader. In addition, there was a significant two-way interaction between leadership style and sex of evaluator, suggesting that male participants evaluated democratic leader less positively than female participants and that male participants evaluated autocratic leader more positively than female participants. Finally, there was a significant three-way interaction. Both male and female participants evaluated autocratic female leader more negatively than democratic female leader. Further, as compared to male participants, female participants evaluated both democratic male leader and democratic female leader more positively.Article Citation - WoS: 3The Mediator Effects of Positive and Negative Affectivity on the Relationship Between Optimism-Pessimism and Satisfaction With Life(Hacettepe Univ, 2013) Ugurlu, Ozanser; Uğurlu, Ozanser; PsikolojiThis study examined the mediation effects of positive and negative affectivity on the relationship between optimism/pessimism and satisfaction with life among university students. Participants were 95 female and 151 male undergraduate students (N = 246). Participants ranged in age from 18 to 26 with a mean of 21.09 (SD = 2.34). Participants completed Life Orientation Scale (LOT), Positive and Negative Affect Schedule (PANAS), and Life Satisfaction Scale. Results of correlational analyses demonstrated that the association between optimism and pessimism was -.40. Optimism was significantly associated with PA (r = .40), NA (r = -.26), and satisfaction with life (r = .36). Similarly, pessimism was significantly correlated with PA (r = -.26), NA (r = .39), and satisfaction with life (r = -.30). Finally, optimism had statistically significant direct and indirect links (by means of positive affectivity) with satisfaction with life, whereas pessimism only had statistically significant direct link with life satisfaction.Article Citation - WoS: 1Citation - Scopus: 3Bullying as a Group Process: Investigation of Participant Roles in Terms of Social Status and Gender(Turkish Psychologists Assoc, 2015) Topcu, Aysun Ergul; Donmez, AliThis study mainly aims to test the participant roles approach on Turkish sample suggesting that bullying is a group process. In this regard, students' ways of involving in bullying and the extent to which children are aware of their participant roles and whether these participant roles differentiate in terms of gender and social status was investigated. A total of 774 students (384 females and 390 males), from 6(th), 7(th) and 8(th) grades of 11 different primary schools in Ankara participated in the study. The results showed that 74% of all children involved in one of the participant roles as bully (11.5%), assistant-reinforcer (10.9%), defender (21.1%), outsider (20.9%) and victim (9.7%). The examinations of the relations between self-reported and peer-reported scores of participant roles revealed that children were aware of their roles in the bullying situations, however, they significantly underestimated their roles in bully and assistant-reinforcer scales while overestimated their roles in the defender and outsider scales. Boys are more actively involved in bullying process than girls; boys participated most frequently in the roles of bully, assistant-reinforcer and victim while girls participated most frequently in the defender and outsider roles. In terms of the findings related to social status, victims were the least accepted and most rejected group among their peers although they did not differentiate from bullies and assistant-reinforcer in this sense. Besides, the victims wereArticle Hangi Lider, Kurumda Kalmayı Nasıl Sağlıyor? Çok Boyutlu İş Motivasyonunun Aracı Rolü(2019) Metin, U. Baran; Göncü-köse, AslıYöneticilerin liderlik tipleri çalışanların iş motivasyonlarını en fazla etkileyen faktörler arasında yer almaktadır ancak, Türkiye’de hem bu etkileri hem de liderlik stillerinin çalışan motivasyonları aracılığı ile işle ilgili diğer sonuçdeğişkenleri üzerindeki etkilerini inceleyen araştırmalar az sayıdadır. Bu çalışmanın amacı, yöneticilerin babacan vedönüşümcü liderlik stilleri ile çalışanların çok boyutlu iş motivasyonları arasındaki ilişkileri geçerliği ve güvenirliğitest edilmiş bir ölçek kullanarak Türkiye örnekleminde incelemek (Çalışma 1); ayrıca, liderlik tipleri ile işten ayrılmaniyetleri arasındaki ilişkilerde çok boyutlu iş motivasyonunun kısmi aracı rolünü test etmektir (Çalışma 2). Bu amaçla,Çalışma 1’de 456 çalışandan veri toplanmış ve Gagné ve arkadaşları (2014) tarafından Öz Belirleme Kuramı (Decive Ryan, 1985) temel alınarak geliştirilen Çok Boyutlu İş Motivasyonu Ölçeği’nin (ÇBİMÖ) Türkçeye adaptasyonçalışması gerçekleştirilmiştir. Çalışma 2’de 388 çalışandan veri toplanmış ve önerilen model yapısal eşitlik modellemesi yöntemiyle test edilmiştir. Çalışma 1’in bulguları, ÇBİMÖ’nün diğer ülkelerde yapılan çalışmaların gösterdiği faktöryapılarına uyumlu bir yapı gösterdiğini ve yordayıcı geçerliği olduğunu ortaya koymuştur. Çalışma 2’nin bulguları,genel olarak iki liderlik stilinin de motivasyon tipleriyle önerilen ilişkileri gösterdiğini ancak, iş motivasyonlarınınyalnızca dönüşümcü liderlik ile işten ayrılma niyetleri arasındaki ilişkide kısmi aracılık ettiğini göstermiştir. Bulgular,kuramsal ve uygulamaya yönelik çıkarımlar ile gelecekteki çalışmalara yönelik önerilerle birlikte tartışılmıştır.Article The effect of agitation on caregivers’ burden in patients with dementia(2014) Özel Kizil, Erguvan Tuğba; Altintafi, H. Özge; Bafituğ, Gülbahar; Durmaz, Nazli; Altunöz, UmutIntroduction: The purpose of this study was to examine the effect of agitation on caregiver relatives’ subjective burden together with other possible factors such as depressive symptoms, cognitive functions, duration of dementia, and caregivers’ age, education and gender. Materials and Method: The participants were 49 patients with dementia (mean age: 76.5; SD: 5.6) and their caregivers. Standardized Mini Mental Test and Cornell Scale for Depression in Dementia were administered to the patient. Cohen-Mansfield Agitation Inventory, Informant Questionnaire of Cognitive Decline in the Elderly and Zarit Burden Scale were administered to the ca-regivers. Linear regression analysis was used to examine the effects of the variables on caregiver burden. Results: There was neither a significant difference between gender and type of caregiver in terms of Zarit Burden Scale points, nor a significant correlation between Zarit Burden Scale scores and Standardized Mini Mental Test, Cornell Scale for Depression in Dementia, age and education of the patient, education of the caregiver or duration of dementia. Significant correlations between Zarit Burden Scale scores and caregivers’ age, Informant Questionnaire of Cognitive Decline in the Elderly and Cohen-Mansfield Agitation Inventory scores were found. Linear regression analysis showed a relationship only between agitation and caregiver burden. Conclusion: Patients’ agitation frequency which was assessed by Cohen-Mansfield Agitation Inventory was the basic factor in determining subjective caregiving. In addition to psychopharma-cological treatment, psychosocial interventions for caregivers are effective. In our country, dayca-re and homecare services, as well as supportive and educative psychosocial programs including interventions for agitation, should be improved.Article Citation - WoS: 11Citation - Scopus: 12Relationship of Internet Gaming Disorder Severity With Symptoms of Anxiety, Depression, Alexithymia, and Aggression Among University Students(Kare Publ, 2019) Evren, Cuneyt; Evren, Bilge; Dalbudak, Ercan; Topcu, Merve; Kutlu, NilayObjective: The aim of the present study was to evaluate the relationship of Internet gaming disorder severity with alexithymia and aggression among university students, while controlling for effects of anxiety and depressive symptoms. Method: The study was conducted with an online survey among 987 volunteer university students in Ankara. Participants were evaluated by administering the Toronto Alexithymia Scale (TAS-20), the Buss-Perry Aggression Questionnaire (BPAQ), the Internet Gaming Disorder Scale-Short-Form (IGDS9-SF), and the depression and anxiety subscales of the 90-Item Symptom Checklist-Revised (SCL-90-R). Results: Scores for the different scales mildly correlated with one other. In hierarchical linear regression analysis, both alexithymia (particularly the dimensions "difficulty identifying feelings" [DIF] and "externally-oriented thinking" [EOT]) and aggression (physical aggression) predicted the severity of Internet gaming disorder symptoms, together with severity of depressive symptoms. Conclusion: These findings suggest that among university students, the severity of alexithymia, particularly in its dimensions DDF and EOT, is related with the severity of Internet gaming disorder, together with aggression, particularly physical aggression, and depression.Article Sleep spindle-related electroencephalograph activity of young adults and its relation to cognitive functions(Ege Univ, 2019) Torun Yazıhan, Nakşidil; Yetkin, Sinan; Yazıhan, Nakşidil TorunObjective: Sleep spindles are phasic bursts of thalamocortical activity, typically defined as 11-16 Hz (in sigma frequency band) with a duration of 0.5 and 2 seconds. Spindles are most prominent during N2 sleep and are a defining feature of this stage. The aim of the present study was to investigate the association between spindle characteristics and cognitive functions of young adults. Methods:The study sample consisted of 17 healthy male subjects aged between 19 and 28 years.The participants had no medical or psychological conditions and were not taking any medications that might affect their sleep pattern and neuropsychological measurements. Polysomnography recordings were conducted from 22:30 to 07:00 hour for two subsequent nights. The first night was for adaptation to the laboratory conditions and to rule out sleep apnea syndrome and periodic leg movements. The second night was used to analyze macro and micro parameters of sleep. A neuropsychological test battery comprising the Serial Digit Learning Test, Raven Standard Progressive Matrices, Verbal Fluency Test,Trail Making A-B, and the Auditory Verbal Learning Test were administered before the second-night sleep session. Sleep spindles in all non-rapid eye movement stage 2 sleep were scored visually from C3-A2 electroencephalogram derivation after polysomnographic analysis was completed. Each 30-sec epoch was analyzed with a high-pass band filtered at 0.3 Hz, and a low-pass band filtered at 35 Hz. Spindle characteristics such as duration, amplitude, mean and peak frequencies were analyzed using the fast Fourier transform algorithm. The association between the characteristics of sleep spindles and the neuropsychological test scores were analyzed using Spearman correlations. Results: Significant positive correlations were found between spindle density and both verbal auditory learning performance and verbal fluency, cognitive flexibility, and semantic organization performances. The serial digit learning test was correlated positively with mean duration, mean frequency, and peak frequency of sleep spindles. Finally, the mean duration, and mean frequency of spindles were positively correlated with verbal fluency, cognitive flexibility, and semantic organization. Conclusion: The associations between spindle features and memory, verbal fluency, and verbal learning abilities were consistent with previous research findings suggesting that sleep spindles might be related to cognitive abilities and the potential to learn. In other words, it might be an indicator of the current level of aptitude for learning.Article Citation - WoS: 16Citation - Scopus: 16Severity of Dissociative Experiences and Emotion Dysregulation Mediate the Relationship Between Childhood Trauma and Internet Addiction Symptom Severity Among Young Adults(Kare Publ, 2019) Evren, Cuneyt; Evren, Bilge; Dalbudak, Ercan; Topcu, Merve; Kutlu, Nilay; Elhai, Jon D.Objective: The first aim of the present study was to evaluate the relationship between childhood trauma and Internet addiction (IA) symptom severity. The second aim was to evaluate the mediator effects of dissociative experiences and emotion dysregulation on this relationship. Method: We conducted the study using an online survey with 920 university student participants. Participants were evaluated with the Internet Addiction Test (IAT), Dissociative Experiences Scale (DES), Childhood Trauma Questionnaire (CTQ-28), and Difficulties in Emotion Regulation Scale (DERS). Results: Compared with participants evidencing low IA risk (n=806, 87.6%), those with high IA risk (n=114, 12.4%) had a longer duration of daily Internet use and a higher rate of problems related to Internet use. The high IA risk group was connected to the Internet less through a smartphone and more through computer use. In addition, scale scores (DES, DERS and CTQ-28) were higher among the group with high IA risk. Scale scores were mildly to moderately correlated with each other. In linear regression analysis, childhood trauma (particularly emotional abuse and physical neglect) was related to severity of IA symptoms. Severity of dissociative experiences and emotion dysregulation mediated the childhood trauma-IA symptom relationship. Conclusion: These findings suggest relations between the severity of childhood trauma, particularly emotional abuse and physical neglect dimensions, and severity of IA symptoms among Turkish young adults. Severity of dissociative experiences and emotion dysregulation may also partially mediate this relationship.
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