Examining the role of early adversity and temperament incognitive development and hair cortisol levels of infants

Ertekin, Zeynep
Although early adversity, including being reared in institutional care or a low socioeconomic environment, influences children’s development negatively, not all children are affected at the same level. This thesis aims to examine the role of early adversity and temperament in infants’ cognitive development and their stress regulation systems. Study I longitudinally examined the cognitive development of infants 3 to 15 months old reared in institutional care (N = 75). Their development was compared with that of infants in a biological family group (N = 65). In Study II, infants’ cognitive development in institutional care (N = 63) was compared with that of infants reared in low-socioeconomic status (SES) family environments (N = 60) at one-time point. The moderating role of temperament was also examined in both Study I and Study II. Study III examined the association between hair cortisol levels of the infants, SES levels of their families, cognitive development, and temperament. Findings from Study I showed that infants in institutional care had lower cognitive development in wave 1, and they could not catch up with their age-mates in family groups in wave 3. Study II showed that infants with low levels of falling reactivity had lower attention skills than infants in the low-SES family group. However, there was no group difference for infants with high levels of falling reactivity. According to the findings in Study III, a mediating role of hair cortisol was not found, but infants’ temperament significantly moderated the effects of SES on infants’ hair cortisol levels.


Examining the role of socioeconomic status and temperament in the hair cortisol levels of infants
Ertekin, Zeynep; Kazak Berument, Sibel (2020-07-01)
Socioeconomic status (SES) appears to be an important contextual factor in children's developmental outcomes, including their responses to stress. However, some children are more susceptible to its effects than others. Hair cortisol is a newer method of assessing the activity of the HPA axis, providing cumulative cortisol levels. The present article examined whether temperament (negative emotionality) moderates the association between an SES index and the hair cortisol concentration (HCC) of infants. Sixty ...
Examining humor in early childhood period from teacher and child aspects
Yılmaz, Betül; Tantekin Erden, Feyza; Department of Early Childhood Education (2019)
The purpose of the study was to examine humor in early childhood education in terms of children and early childhood teachers. The study sample comprised 22 five-year-old children and 5 early childhood teachers from a public preschool in Tokat. A qualitative phenomenological research method was used. As instruments, a humorous visual and five semi- structured questions, addition semi- structured questions that lead children to make a humorous drawing and to explain it were prepared. A questionnaire comprised...
The Effects of Parental Attitudes and Mothers' Psychological Well-Being on the Emotional and Behavioral Problems of Their Preschool Children
Yurdusen, Sema; EROL, NEŞE; Gençöz, Tülin (2013-01-01)
The aim of the present study was to examine the association between emotional and behavioral problems in preschool children and maternal attitudes. The predictor variables were parental attitudes, maternal depression and anxiety symptoms. Our sample consisted of the mothers of 204 preschool children attending different preschools in Ankara, Turkey. Mothers were asked to complete the parental attitude research instrument, the beck depression inventory, the trait anxiety inventory, and the child-behavior chec...
Investigating Preschoolers' Self-Care Behaviors: Teacher and Parent Reports
Altaş, Elif Naz; Demircan, Hasibe Özlen; Department of Early Childhood Education (2022-9-21)
The purpose of the study was to investigate and compare teachers’ and parents’ beliefs about children’s self-care behaviors considering child (age, gender, having sibling), parent (socioeconomic status) and teacher-related (teaching experience) characteristics and to investigate and compare the beliefs about the self-care implementations. Explanatory mixed-methods design was used. The data was gathered from 208 early-childhood educators in nine central districts of Ankara and 531 parents whose children were...
The Effects of Care Types and Temperament on Problem Behaviors of Children Under the Care of Social Services
Memişoğlu, Aybegüm; Kazak Berument, Sibel (null; 2015-07-07)
This study examined the moderating effects of temperamental characteristics on the child outcomes of social competence, externalization and internalization problems within a sample of children cared in different environmental settings (institutions, care villages, group homes, foster care, low SES biological family care) aged between 3-5 years. The interaction of temperament and care environment was tested based on the differential susceptibility hypothesis. Also, the differentiating results considering the...
Citation Formats
Z. Ertekin, “Examining the role of early adversity and temperament incognitive development and hair cortisol levels of infants,” Ph.D. - Doctoral Program, Middle East Technical University, 2021.