Meta-Analysis for Effect Size of Single target Experimental Studies for Language Intervention on Children with Developmental Delays

Abstract Although cross-linguistic influence at the level of morphosyntax is one of the most intensively studied topics in child bilingualism, the circumstances under which it occurs remain unclear. In this meta-analysis, we measured the effect size of cross-linguistic influence and systematically assessed its predictors in 750 simultaneous and early sequential bilingual children in 17 unique language combinations across 26 experimental studies. We found a significant small to moderate average effect size of cross-linguistic influence, indicating that cross-linguistic influence is part and parcel of bilingual development. Language dominance, operationalized as societal language, was a significant predictor of cross-linguistic influence, whereas surface overlap, language domain and age were not. Perhaps an even more important finding was that definitions and operationalisations of cross-linguistic influence and its predictors varied considerably between studies. This could explain the absence of a comprehensive theory in the field. To solve this issue, we argue for a more uniform method of studying cross-linguistic influence.

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The Work-family Field: Gaps and Missing Links as Opportunities for Future Research

Innovar ◽

10.15446/innovar.v27n66.66711 ◽

2017 ◽

Vol 27 (66) ◽

pp. 57-74 ◽

Cited By ~ 3

Author(s):

Katherina Kuschel

Keyword(s):

Selection Bias ◽

Effect Size ◽

Meta Analysis ◽

Experimental Studies ◽

Future Research ◽

Positive Side ◽

Self Selection ◽

Conference Presentations ◽

Methodological Problems ◽

Work Family

This review presents a synthesis and a critique of the development of the existing workfamily (WF) literature during the last decade in order to highlight gaps and limitations in current research. The study revises 83 peer-reviewed articles, book chapters and conference presentations (2004-2014) related to WF in economics, management and psychology disciplines, and classifies the current research into three broad themes for future research paths: i) definitions and theories; ii) background and outcomes of wf conflict, balance and enrichment; and iii) methodological gaps. Advances have been made this decade on meta-analysis and the understanding of the positive side of WF interface. Future research opportunities in this field will include a deeper understanding of how to effectively cope with WF conflict, how to achieve WF enrichment, the use of different methods (qualitative, longitudinal and experimental studies) on samples of new occupations, and how researchers could address methodological problems (causality, endogeneity, simultaneity, effect size, and self-selection bias) to better handle the complexity of WF issues.

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Computer-mediated communication (CMC) in L2 oral proficiency development: A meta-analysis

ReCALL ◽

10.1017/s095834401400041x ◽

2014 ◽

Vol 27 (3) ◽

pp. 261-287 ◽

Cited By ~ 16

Author(s):

Huifen Lin

Keyword(s):

Effect Size ◽

Meta Analysis ◽

Computer Mediated Communication ◽

Large Body ◽

Experimental Studies ◽

Oral Proficiency ◽

Task Type ◽

Oral Performance ◽

Mediated Communication ◽

Computer Mediated

AbstractThe ever growing interest in the development of foreign or second (L2) oral proficiency in a computer-mediated communication (CMC) classroom has resulted in a large body of studies looking at both the direct and indirect effects of CMC interventions on the acquisition of oral competences. The present study employed a quantitative meta-analytic approach to investigate such effects by synthesizing (quasi)experimental studies that provide empirical quantitative data for effect size calculation. A literature search located 25 relevant studies for the final analysis. Each study was independently coded for learner, design and publication characteristics. The averaged effect size was estimated from the included studies. The results of the meta-analysis reveal that communication mediated by computer/technologies produced a moderate positive effect on L2 learners’ oral proficiency compared to face-to-face (F2F) communication or no interaction. Furthermore, CMC has roughly similar effect on pronunciation, lexical and syntactic level of oral production; however, it might have a negative impact on fluency and accuracy. This meta-analysis also found that the effect of CMC on oral proficiency depends on several methodological factors such as task type, outcome measurement, treatment length, and assessment task. Major findings of the current meta-analysis include: (1) studies relying on elicited data are superior to those utilizing naturalistic data; (2) reading aloud seems to be the task that could elicit the best oral performance from students; (3) surprisingly, CMC appeared to be harmful for accuracy and fluency; (4) studies that employed decision-making generated the largest effect size, followed by studies that used more than one task type; (5) among the four tasks, jigsaw actually generated a negative effect on oral performance; and (6) as the most popular task employed by primary researchers, opinion-exchange studies produced the smallest effect size. These findings need to be interpreted as exploratory rather than confirmatory since each of them became less trustworthy after taking into consideration numerous other factors such as CMC task and the particular CMC tool used, etc. Future research suggestions are provided and the limitations of this meta-analysis are addressed.

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The Relationship between Music and Food Intake: A Systematic Review and Meta-Analysis

Nutrients ◽

10.3390/nu13082571 ◽

2021 ◽

Vol 13 (8) ◽

pp. 2571

Author(s):

Tianxiang Cui ◽

Jiaxuan Xi ◽

Chanyuan Tang ◽

Jianwen Song ◽

Jinbo He ◽

...

Keyword(s):

Systematic Review ◽

Food Intake ◽

Effect Size ◽

Web Of Science ◽

Meta Analysis ◽

Experimental Studies ◽

Inclusion Criteria ◽

Positive Effects ◽

Small Effect Size ◽

The Relationship

Food intake has been shown to be related to several environmental factors including the presence of music. However, previous findings of the relationship between music and food intake are inconsistent. In the present study, a systematic review and meta-analysis was conducted to quantitatively review the extent to which music is associated with food intake as well as to investigate potential moderators that might have contributed to the heterogeneity of the existing findings. Literature was searched on four databases (i.e., PsycINFO, Web of Science, PubMed, and ProQuest Dissertations and Theses) and Google Scholar. Nine articles published from 1989 to 2020 met our inclusion criteria. A meta-analysis was carried out via a three-level random-effects model. The overall effect size (i.e., Hedges’ g) was 0.19 (95% Confidence Interval: −0.003, 0.386; SE = 0.10, t = 1.99, p = 0.054), indicating a marginally significant but small effect size. Body Mass Index (F(1, 21) = 5.11, p = 0.035) was found to significantly contribute to the heterogeneity of effect sizes, with larger positive effects of music on food intake for individuals with higher BMI. However, music-related features did not significantly moderate the relationship between music and food intake. More experimental studies are needed to update the current meta-analysis and get a better understanding of this topic.

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The effect of cooperative learning on academic achievement: A meta-analysis on the relationship between the study group size and effect size İşbirlikli öğrenmenin başarıya etkisi: Çalışma grubu ile etki büyüklüğü arasındaki ilişkiye dair bir meta analiz çalışması

Journal of Human Sciences ◽

10.14687/jhs.v14i1.4314 ◽

2017 ◽

Vol 14 (1) ◽

pp. 473 ◽

Cited By ~ 1

Author(s):

Murat Tuncer ◽

Melih Dikmen

Keyword(s):

Cooperative Learning ◽

Random Effects ◽

Effect Size ◽

Fixed Effects ◽

Meta Analysis ◽

Experimental Studies ◽

Study Group ◽

Random Effects Model ◽

Learning Groups ◽

The Relationship

The purpose of this study was to determine the effect of cooperative learning on achievement and the relationship between the study group and effect size by means of meta-analysis. Meta-analysis is the method employed in order to statistically analyze the quantitative data collected in independent and multiple studies carried out on similar topics, and to reach a general judgment regarding the results of these studies. Certain criteria were used in order to decide which researches would be included in the meta-analysis. Based on these criteria, it was decided to include 6 experimental studies in the meta-analysis. As a result, for the six studies, the effect size calculated within 95 % confidence interval has proved to be .518 based on random effects model. When two studies with the largest learning groups are excluded from the research respectively, firstly this effect size increases to .528, later it is calculated as .817 without any model discrimination. When effect size intervals in literature (≥ 0.5: strong, ≥ 0.3: moderate and ≥ .01 weak) is taken into consideration, the effect of cooperative learning on achievement has been observed as “Strong”. In addition to this, contrary to some views in literature, it has been seen that large learning groups have higher standard errors and a bigger effect size has been achieved when such studies have been excluded from the analysis. What is more, even the limitation of fixed effects model has disappeared, and the effect size calculated in fixed effects and random effects model has been balanced. ÖzetBu araştırmanın amacı, işbirlikli öğrenmenin başarı üzerindeki etkisini ve çalışma grubu ile etki büyüklüğü arasındaki ilişkiyi meta-analiz yöntemiyle belirlemektir. Meta-analiz, benzer konularda yapılmış birbirinden bağımsız ve çok sayıda çalışmadan elde edilmiş sayısal verileri istatistiksel olarak analiz etme ve bu çalışmaların sonuçları hakkında genel bir yargıya varma yöntemidir. Hangi araştırmaların meta-analize dâhil edileceğine yönelik seçimlerin yapılmasında belirli ölçütler kullanılmıştır. Bu ölçütlere dayalı olarak 6 adet deneysel araştırmanın meta-analize dâhil edilmesine karar verilmiştir. Sonuç olarak; altı çalışma için %95 güven aralığında hesaplanan etki büyüklüğü rastgele etkiler modeline göre .518’dir. En büyük çalışma grubuna sahip iki araştırma sırasıyla araştırma dışında tutulduğunda bu etki büyüklüğü önce .528’ e çıkmakta, sonrasında ise model ayrımı olmaksızın .817 olarak hesaplanmaktadır. Alan yazındaki etki büyüklüğü aralıkları (≥ 0.5: güçlü, ≥ 0.3: orta düzey ve ≥ .01 zayıf) dikkate alındığında işbirlikli öğrenmenin başarı üzerindeki etkisi “Güçlü” bir etki olarak gözlenmiştir. Ayrıca alan yazındaki bazı görüşlerin aksine büyük çalışma gruplarının standart hatalarının daha yüksek olduğu, bu araştırmaların analiz dışında tutulması ile daha büyük etki büyüklüklerine ulaşıldığı, hatta sabit etki modelinin sınırlılığının bile ortadan kalktığı, sabit etki ve rastgele etki modelinde hesaplanan etki büyüklüğünün eşitlendiği görülmüştür.

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The Effect of Using Technology in Education on Academic Achievement of Students: The Case of Geographical Information Systems

Education Quarterly Reviews ◽

10.31014/aior.1993.04.02.294 ◽

2021 ◽

Vol 4 (2) ◽

Author(s):

Hafize Er Turkuresin ◽

Keyword(s):

Academic Achievement ◽

Information Systems ◽

Sample Size ◽

Effect Size ◽

Meta Analysis ◽

Experimental Studies ◽

Geographical Information ◽

Moderator Variables ◽

Significant Difference ◽

Experimental Group

The objective of this study was to determine the effect of Geographic Information Systems, one of the educational technologies, on the academic performance of students. In accordance with this purpose, to combine the results of independent experimental studies, the meta-analysis method was put into use. Within this context, as a result of the literature review, in the meta-analysis, 17 experimental studies conducted between the years 2007 and 2020 were included. The total sample size of the mentioned studies was 620 in the experimental group and 607 in the control group. Thalheimer and Cook's (2002) classification was used in calculating the effect size values in the study in which the random effects model was used. Publication bias in research; Funnel Plot was tested with Rosenthal Fail Safe N value, cut and fill method of Duval and Tweedie and Begg-Mazumdar statistics, and studies included in meta-analysis were found to be heterogeneous. The effect of moderator variables, which are thought to influence academic achievement, was examined. Q and p significance tests were used to calculate the effect of moderator variables. According to the results of the study, it has been determined that GIS has a very wide (+1,193) effect on academic achievement. Positive average effect size indicates a change in favour of the experimental group. It was concluded that among the moderator variables, the study type, class level and sample size did not create a significant change in the effect size, and the year variable created a significant difference in the effect size.

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The Effect of Creative Drama as a Method on Skills: A Meta-analysis Study

Journal of Education and Training Studies ◽

10.11114/jets.v6i4.2968 ◽

2018 ◽

Vol 6 (4) ◽

pp. 63 ◽

Cited By ~ 1

Author(s):

Özgür Ulubey

Keyword(s):

Effect Size ◽

Web Of Science ◽

Meta Analysis ◽

Experimental Studies ◽

Random Effects Model ◽

Creative Drama ◽

Inclusion Criteria ◽

Publication Type ◽

Moderator Variables ◽

Data Source

The aim of the current study was to synthesize the findings of experimental studies addressing the effect of the creative drama method on the skills of students. Research data were derived from ProQuest Citations, Web of Science, Google Academic, National Thesis Center, EBSCO, ERIC, Taylor & Francis Online, and ScienceDirect databases using keywords such as drama, and skill. A total of 63 research studies including twenty articles, thirty-four master’s and nine doctoral theses, which met the inclusion criteria of meta-analysis, formed the data source of the current study. The collected data were analyzed by using the Comprehensive Meta Analysis program. To address the heterogeneity of the studies, the random effects model were employed to calculate the effect size. The results of the research showed that creative drama method positively affected the skills of students. In experimental studies, the differences in the effect created by the creative drama on students' skills were examined in terms of moderator variables. While the effect size of creative drama on students’ skills was found to be significantly varying depending on the moderator variables including the duration of experimental application, the level of schooling and the publication type, it was found that the effect size was not significantly varying depending on the moderator variables of practitioner and types of skills.

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The Effect of Using Technology in Education on Academic Achievement of Students: The Case of Geographical Information Systems

10.31219/osf.io/ypreb ◽

2021 ◽

Author(s):

Hafize Er Turkuresin

Keyword(s):

Academic Achievement ◽

Information Systems ◽

Sample Size ◽

Effect Size ◽

Meta Analysis ◽

Experimental Studies ◽

Geographical Information ◽

Moderator Variables ◽

Significant Difference ◽

Experimental Group

The objective of this study was to determine the effect of Geographic Information Systems, one of the educational technologies, on the academic performance of students. In accordance with this purpose, to combine the results of independent experimental studies, the meta-analysis method was put into use. Within this context, as a result of the literature review, in the meta-analysis, 17 experimental studies conducted between the years 2007 and 2020 were included. The total sample size of the mentioned studies was 620 in the experimental group and 607 in the control group. Thalheimer and Cook's (2002) classification was used in calculating the effect size values in the study in which the random effects model was used. Publication bias in research; Funnel Plot was tested with Rosenthal Fail Safe N value, cut and fill method of Duval and Tweedie and Begg-Mazumdar statistics, and studies included in meta-analysis were found to be heterogeneous. The effect of moderator variables, which are thought to influence academic achievement, was examined. Q and p significance tests were used to calculate the effect of moderator variables. According to the results of the study, it has been determined that GIS has a very wide (+1,193) effect on academic achievement. Positive average effect size indicates a change in favour of the experimental group. It was concluded that among the moderator variables, the study type, class level and sample size did not create a significant change in the effect size, and the year variable created a significant difference in the effect size.

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