Khara L. Pence Turnbull

Dr. Khara L. Pence Turnbull

orcid

Research Focus & Metrics

Academic Career Length

26Years (2001-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 August 2019 in Nutrients
Verified
Journal Article
Open access
PDF file
JJJamie Jirout
Jamie Jirout
JLJennifer LoCasale-Crouch
Jennifer LoCasale-Crouch
KTKhara L. Pence Turnbull
Khara L. Pence Turnbull
YGYin Gu
Yin Gu
MCMayaris Cubides
Mayaris Cubides
Sibylle KranzSibylle Kranz
Sibylle Kranz
In today’s research environment, children’s diet, physical activity, and other lifestyle factors are commonly studied in the context of health, independent of their effect on cognition and learning. Moreover, there is little overlap between the two literatures, although it is reasonable to expect that the lifestyle factors explored in the health-focused research are intertwined with cognition and learning processes. This thematic review provides an overview of knowledge connecting the selected lifestyle factors of diet, physical activity, and sleep hygiene to children’s cognition and learning. Research from studies of diet and nutrition, physical activity and fitness, sleep, and broader influences of cultural and socioeconomic factors related to health and learning, were summarized to offer examples of research that integrate lifestyle factors and cognition with learning. The literature review demonstrates that the associations and causal relationships between these factors are vastly understudied. As a result, current knowledge on predictors of optimal cognition and learning is incomplete, and likely lacks understanding of many critical facts and relationships, their interactions, and the nature of their relationships, such as there being mediating or confounding factors that could provide important knowledge to increase the efficacy of learning-focused interventions. This review provides information focused on studies in children. Although basic research in cells or animal studies are available and indicate a number of possible physiological pathways, inclusion of those data would distract from the fact that there is a significant gap in knowledge on lifestyle factors and optimal learning in children. In a climate where childcare and school feeding policies are continuously discussed, this thematic review aims to provide an impulse for discussion and a call for more holistic approaches to support child development.

1 July 2012 in Early Childhood Research Quarterly
Verified
Journal Article
Closed access
SPShayne B. Piasta
Shayne B. Piasta
LJLaura M. Justice
Laura M. Justice
SCSonia Q. Cabell
Sonia Q. Cabell
AWAlice K. Wiggins
Alice K. Wiggins
KTKhara L. Pence Turnbull
Khara L. Pence Turnbull
SCStephanie M Curenton
Stephanie M Curenton

1 April 2010 in Early Childhood Research Quarterly
Verified
Journal Article
Closed access
LJLaura M. Justice
Laura M. Justice
RBRyan Bowles
Ryan Bowles
KTKhara L. Pence Turnbull
Khara L. Pence Turnbull
CGCarolyn Gosse
Carolyn Gosse

1 May 2008 in Developmental Psychology
Verified
Journal Article
Closed access
LJLaura M. Justice
Laura M. Justice
PPPaige C. Pullen
Paige C. Pullen
KTKhara L. Pence Turnbull
Khara L. Pence Turnbull
How much do preschool children look at print within storybooks when adults read to them? This study sought to answer this question as well as to examine the effects of adult verbal and nonverbal references to print on children's visual attention to print during storybook reading. Forty-four preschool-aged children participated in this study designed to determine the amount of visual attention children paid to print in 4 planned variations of storybook reading. Children's visual attention to print was examined when adults commented and questioned about print (verbal print condition) or pointed to and tracked the print (nonverbal print condition), relative to 2 comparison conditions (verbatim reading and verbal picture conditions). Results showed that children rarely look at print, with about 5%-6% of their fixations allocated to print in verbatim and verbal picture reading conditions. However, preschoolers' visual attention to print increases significantly when adults verbally and nonverbally reference print; both reading styles exerted similar effects. The authors conclude that explicit referencing of print is 1 way to increase young children's contacts with print during shared storybook reading.

1 November 2011 in American Journal of Speech-Language Pathology
Verified
Journal Article
Closed access
SCSonia Q. Cabell
Sonia Q. Cabell
LJLaura M. Justice
Laura M. Justice
SPShayne B. Piasta
Shayne B. Piasta
SCStephanie M Curenton
Stephanie M Curenton
AWAlice Wiggins
Alice Wiggins
YPYaacov Petscher
Yaacov Petscher
Purpose: This study examined the extent to which teacher responsivity education affected preschoolers' language and literacy development over an academic year. Additional aims were to determine whether children’s initial language abilities and teachers' use of responsivity strategies were associated with language outcomes, in particular. Method: In this randomized controlled trial, preschool centers were assigned to a responsivity education intervention ( n = 19 centers, 25 teachers, and 174 children) or a “business-as-usual” control condition ( n = 19 centers, 24 teachers, and 156 children). Teachers within the intervention centers received training focused on a set of strategies designed to promote children’s engagement and participation in extended conversational interactions across the school day. Results: Hierarchical linear models showed no main effects on children’s language skills, although moderating effects were observed such that the intervention appeared to have positive effects for children with relatively high initial language abilities. In addition, teacher use of responsivity strategies was positively associated with vocabulary development. With regard to children’s literacy skills, there was a significant main effect of the intervention on print-concept knowledge. Conclusions: Although teacher responsivity education is viewed as benefitting children’s language and literacy development, the impacts of this type of intervention on children’s skills warrant further investigation. Supplemental Material: https://doi.org/10.23641/asha.6170192

1 August 2008 in Journal of Speech, Language, and Hearing Research
Verified
Journal Article
Closed access
PDF file
LJLaura M. Justice
Laura M. Justice
AMAndrew Mashburn
Andrew Mashburn
KTKhara L. Pence Turnbull
Khara L. Pence Turnbull
AWAlice Wiggins
Alice Wiggins
Purpose: The primary purpose of this study was to investigate child impacts following implementation of a comprehensive language curriculum, the Language-Focused Curriculum (LFC; Bunce, 1995), within their preschool classrooms. As part of this larger purpose, this study identified child-level predictors of expressive language outcomes for children attending at-risk preschool programs as well as main effects for children’s exposure to the language curriculum and its active ingredients—namely, teacher use of language stimulation techniques (LSTs; e.g., open questions, recasts, models). Method: Fourteen preschool teachers were randomly assigned to 2 conditions. Treatment teachers implemented the experimental curriculum for an academic year; a total of 100 children were enrolled in their classrooms. Comparison teachers maintained their prevailing curriculum; a total of 96 children were enrolled in these classrooms. Teachers’ fidelity of implementation was monitored using structured observations conducted 3 times during the academic year. Children’s growth in expressive language was assessed using measures derived from language samples in the fall and spring, specifically percent complex utterances, rate of noun use, number of different words, and upper bound index. Results: Children’s language skill in the fall, socioeconomic status (household income), and daily attendance served as significant, positive predictors of their language skill in the spring. The impact of the language curriculum and LST exposure was moderated by children’s classroom attendance, in that the language curriculum accelerated language growth for children who attended preschool regularly; a similar effect was seen for LST exposure. Conclusions: Adoption of a comprehensive language curriculum may provide a value-added benefit only under highly specific circumstances. Findings suggest that at-risk children who receive relatively large doses of a curriculum (as measured in days of attendance during the academic year) that emphasizes quality language instruction may experience accelerated expressive language growth during pre-kindergarten.