scholarly journals Effectiveness of Virtual Laboratories in Science Education: A Meta-Analysis

Author(s):  
Marc Lancer Santos ◽  
◽  
Maricar Prudente

The development of technologies had transformed the way we deliver our instruction to the students. Many researchers and teachers alike are advocating for the integration of technology into their instruction as it provides promising results. One key aspect as to which technology can be of great help is through virtual laboratory activities. This meta-analysis offered information on the effectiveness of using virtual laboratory activities to student achievement. Results of the meta-analysis revealed a medium effect size (g = 0.587) towards the use of virtual laboratories. The subject area and level of study were used as subgrouping to further explore the effectiveness of conducting virtual laboratories.

2020 ◽  
pp. 152483802091560
Author(s):  
Elizabeth A. Goncy ◽  
Evan J. Basting ◽  
Courtney B. Dunn

Relationship continuity and social learning theories provide support for parent-to-child aggression as one potential explanatory factor for dating abuse (DA); however, empirical results are mixed across studies as to the strength of this association. This meta-analysis sought to estimate the overall size of this effect among adolescent and young adult samples and investigate potential moderating factors including sample and measurement variables. Records were identified using a computerized search of databases with several keywords. Peer-reviewed journal articles and dissertations were included if they measured both parent-to-child aggression and DA perpetration and/or victimization among adolescents (aged 12–18) or young adults (aged 18–29). Sixty-six records met inclusion criteria, yielding 370 unique effect sizes for the relation between parent-to-child aggression and DA across 94 unique samples. As hypothesized, there was a small-to-medium effect size between parent-to-child aggression and subsequent DA during both adolescence and young adulthood. The strength of these findings was consistent across DA outcome (perpetration and victimization) and both physical and psychological forms, youth and parent gender, and youth age. Stronger associations were found when the gender of the parental aggressor was undefined compared to either a defined paternal or maternal aggressor. Records using the Conflict Tactics Scale to measure both parent-to-child aggression and DA yielded stronger associations compared to sources that used different measures, but single informant versus multiple informants did not yield any differences.


2020 ◽  
Vol 25 (5) ◽  
pp. 461-479
Author(s):  
Hadjira Bendella ◽  
Hans-Georg Wolff

PurposeNetworking refers to goal-directed behaviors focused on building and cultivating informal relationships to obtain career-related resources. According to Gibson et al.'s (2014) model, personality traits represent prominent and important antecedents of networking. This study seeks to provide robust evidence on relationships between personality and networking by summarizing prior research using meta-analytical tools.Design/methodology/approachThe authors classify linking attributes between networking and personality into social, idea-related, task-related and affective behavioral domains and additionally include three compound traits that relate to several domains. They investigate two potential moderators: internal vs. external networking and prominent networking measures. Their comprehensive literature search identified 41 studies with 46 independent samples.FindingsThe authors find that social, idea-related and task-related traits have positive relationships with networking of medium effect size, whereas affective traits exhibit small but significantly positive effects. The compound trait of proactive personality appears to be the best predictor of networking. Moderator analyses indicate that there were hardly any differences concerning internal and external networking and also prominent measures.Originality/valueThe present study goes beyond narrative reviews contributing the first quantitative summary of these relationships. It identifies four behavioral domains that represent characteristics relevant to networking. The findings largely corroborate, but at times correct, narrative reviews on dispositional antecedents of networking. The authors highlight the importance of compound traits that have yet been overlooked by narrative reviews (e.g. self-monitoring).


Author(s):  
Elias M Klemperer ◽  
John R Hughes ◽  
Catherine E Peasley-Miklus ◽  
Peter W Callas ◽  
Jessica W Cook ◽  
...  

Abstract Introduction Most descriptions of tobacco withdrawal have not changed in >30 years despite new research. This meta-analysis tested whether abstinence leads to decreased positive affect (PA) because abstinence-induced symptom changes are a core feature of the tobacco withdrawal syndrome. In addition, we examined whether reduced PA was due to withdrawal (ie, temporary decrease in a “U-shaped” curve) or offset (ie, return to baseline) effect. Methods Our main inclusion criterion was a prospective within-participant test of change in PA during abstinence conditions among people who smoke cigarettes daily who were not using a cessation medication. Our search of PubMed, PsycINFO, and personal libraries yielded a total of 32 tests with 2054 participants. Results There was a medium effect size indicating an overall decrease in PA following abstinence from cigarettes (Cohen’s d = −0.40, 95% CI = −0.30 to −0.49). There was large heterogeneity (I2 = 70.7%). Most (79%) of the 24 trials that conducted significance tests reported that reduction in PA was significant. Seven tests were adequately designed to detect a withdrawal versus offset effect. Over half (57%) displayed a U-shaped curve for abstinence-induced change in PA indicative of a withdrawal symptom rather than offset effect. Conclusions Abstinence from cigarettes is associated with a decrease in PA. Whether low PA should be added to withdrawal measures and diagnostic criteria requires replication of the time-course of change in PA and tests of whether abstinence-induced changes in PA and negative affect occur independently. Implications Though there was substantial heterogeneity among trials, our findings suggest that (1) abstinence from cigarettes decreases positive affect and (2) this decrease may represent a withdrawal effect (vs. an offset effect). However, it is unclear whether abstinence-induced losses in positive affect are independent from increased negative affect.


2015 ◽  
Vol 33 (5) ◽  
pp. 353-359 ◽  
Author(s):  
Doreen W H Au ◽  
Hector W H Tsang ◽  
Paul P M Ling ◽  
Christie H T Leung ◽  
P K Ip ◽  
...  

Objective To evaluate the evidence from randomised controlled trials (RCTs) and quantify the effects of acupressure on anxiety among adults. Methodology RCTs published between January 1997 and February 2014, comparing acupressure with sham control, were identified from the databases Science Citation Index/Social Sciences Citation Index, Scopus, PubMed and PsycINFO. Meta-analysis of eligible studies was performed and the magnitude of the overall effect size was calculated for the anxiety outcome. Revised STRICTA (the Standards for Reporting Interventions in Clinical Trials of Acupuncture) criteria were used to appraise the acupressure procedures, and the Cochrane risk of bias tool was used to assess the methodological quality of the studies. Results Of 39 potentially relevant studies, seven RCTs met the inclusion criteria for review while five studies met the criteria for meta-analysis. All studies reported the positive effect of acupressure on relieving anxiety from the anticipation of surgery or treatment. EX-HN3 ( Yintang), HT7 ( Shenmen) were the commonest points selected and two studies used bilateral points. The acupressure procedure was generally well reported and studies had a low risk of bias. The combined results of the five trials showed a greater overall reduction in anxiety in the acupressure group than in the sham controls (standardised mean differences (SMD)=−1.11; 95% CI −1.61 to −0.61; p<0.0001 heterogeneity: I2=75%; χ2=16.17; p=0.003; r=0.485). Conclusions Acupressure seems to be effective in providing immediate relief of pretreatment anxiety among adults, and has a medium effect size. However, conflicting results were found for the improvements on physiological indicators. More rigorous reporting, including allocation concealment procedure, is needed to strengthen the results.


2012 ◽  
Vol 30 (1) ◽  
pp. 71-83 ◽  
Author(s):  
Friedrich Platz ◽  
Reinhard Kopiez

the visual component of music performance as experienced in a live concert is of central importance for the appreciation of music performance. However, up until now the influence of the visual component on the evaluation of music performance has remained unquantified in terms of effect size estimations. Based on a meta-analysis of 15 aggregated studies on audio-visual music perception (total N = 1,298), we calculated the average effect size of the visual component in music performance appreciation by subtracting ratings for the audio-only condition from those for the audio-visual condition. The outcome focus was on evaluation ratings such as liking, expressiveness, or overall quality of musical performances. For the first time, this study reveals an average medium effect size of 0.51 standard deviations — Cohen's d; 95% CI (0.42, 0.59) — for the visual component. Consequences for models of intermodal music perception and experimental planning are addressed.


PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0253938
Author(s):  
Mariya Davydenko ◽  
Marta Kolbuszewska ◽  
Johanna Peetz

Self-control can be assisted by using self-control strategies rather than relying solely on willpower to resist tempting situations and to make more goal-consistent decisions. To understand how self-control strategies can aid financial goals, we conducted a meta-analysis (Study 1) to aggregate the latest research on self-control strategies in the financial domain and to estimate their overall effectiveness for saving and spending outcomes. Across 29 studies and 12 different self-control strategies, strategies reduced spending and increased saving significantly with a medium effect size (d = 0.57). Proactive and reactive strategies were equally effective. We next examined whether these strategies studied in the academic literature were present in a media sample of websites (N = 104 websites with 852 strategies) and in individuals’ personal experiences (N = 939 participants who listed 830 strategies). About half the strategies identified in the meta-analysis were present in the media sample and about half were listed by lay participants as strategies they personally use. In sum, this paper provides a comprehensive overview of the self-control strategies that have been studied in the empirical literature to date and of the strategies promoted in the media and used in daily life, identifying gaps between these perspectives.


2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Han Suk Lee ◽  
Sun Wook Park ◽  
Yoo Jung Park

Objective. To confirm that physical activity program improves the symptoms of dementia and the most effective physical activity was selected to help establish exercise programs.Methods. Three databases, PubMed, Science Direct, and Willey online, were used to collect articles. The databases were published between January 2005 and December 2015. Keywords such as “dementia,” and “physical activity” were used in searching for papers. As a result, nine studies were selected in the second screening of the meta-analyses.Results. The improvement in the dementia symptom of physical capacity was 1.05 (high effect size, 95% CI: 0.03 to 0.73), ability of activity of daily living was 0.73 (slightly high effect size, 95% CI: 0.23 to 1.23), cognitive function was 0.46 (medium effect size, 95% CI: 0.26 to 0.66), and psychological state was 0.39 (lower than the medium effect size, 95% CI: 0.01 to 0.77).Conclusion. The physical activity for patients with dementia had an effect on the improvement of physical capacity and combined exercise was the most effective physical activity.


2018 ◽  
Author(s):  
Alfredo Sánchez-Tójar ◽  
Shinichi Nakagawa ◽  
Moisès Sánchez-Fortún ◽  
Dominic A. Martin ◽  
Sukanya Ramani ◽  
...  

AbstractThe status signalling hypothesis aims to explain conspecific variation in ornamentation by suggesting that some ornaments signal dominance status. Here, we use multilevel meta-analytic models to challenge the textbook example of this hypothesis, the black bib of house sparrows (Passer domesticus). We conducted a systematic review, and obtained raw data from published and unpublished studies to test whether dominance rank is positively associated with bib size across studies. Contrary to previous studies, our meta-analysis did not support this prediction. Furthermore, we found several biases in the literature that further question the support available for the status signalling hypothesis. First, the overall effect size of unpublished studies was zero, compared to the medium effect size detected in published studies. Second, the effect sizes of published studies decreased over time, and recently published effects were, on average, no longer distinguishable from zero. We discuss several explanations including pleiotropic, population- and context-dependent effects. Our findings call for reconsidering this established textbook example in evolutionary and behavioural ecology, raise important concerns about the validity of the current scientific publishing culture, and should stimulate renewed interest in understanding within-species variation in ornamental traits.


2021 ◽  
Vol 13 (4) ◽  
pp. 63-82
Author(s):  
*Zhonggen Yu ◽  
Liheng Yu

Social media applications such as Facebook have received wide attention in their use in education. However, it is still hard to arrive at a conclusion regarding whether a Facebook-assisted approach is effective in education and whether there are any significant gender differences in the learning outcomes. Based on rigid inclusion criteria, this study included 21 peer-reviewed high-quality journal articles. Through a meta-analysis using Reviewer Manager 5.3, the authors concluded that a Facebook-assisted approach could obtain significantly higher learning outcomes than the non-Facebook-assisted one with a medium effect size (d = 0.42) and that females could achieve significantly better learning outcomes than males with a very small effect size (d = -0.21) in the Facebook-assisted education. Future research could examine the effect of educational use of other social media applications, as well as in sociological, psychological, or educational dimensions.


2016 ◽  
Vol 46 (11) ◽  
pp. 2423-2434 ◽  
Author(s):  
M. Amlung ◽  
T. Petker ◽  
J. Jackson ◽  
I. Balodis ◽  
J. MacKillop

BackgroundAn increasing number of studies have investigated delay discounting (DD) in relation to obesity, but with mixed findings. This meta-analysis synthesized the literature on the relationship between monetary and food DD and obesity, with three objectives: (1) to characterize the relationship between DD and obesity in both case–control comparisons and continuous designs; (2) to examine potential moderators, including case–control v. continuous design, money v. food rewards, sample sex distribution, and sample age (<18 v. >18 years); and (3) to evaluate publication bias.MethodFrom 134 candidate articles, 39 independent investigations yielded 29 case–control and 30 continuous comparisons (total n = 10 278). Random-effects meta-analysis was conducted using Cohen's d as the effect size. Publication bias was evaluated using fail-safe N, Begg–Mazumdar and Egger tests, meta-regression of publication year and effect size, and imputation of missing studies.ResultsThe primary analysis revealed a medium effect size across studies that was highly statistically significant (d = 0.43, p < 10−14). None of the moderators examined yielded statistically significant differences, although notably larger effect sizes were found for studies with case–control designs, food rewards and child/adolescent samples. Limited evidence of publication bias was present, although the Begg–Mazumdar test and meta-regression suggested a slightly diminishing effect size over time.ConclusionsSteep DD of food and money appears to be a robust feature of obesity that is relatively consistent across the DD assessment methodologies and study designs examined. These findings are discussed in the context of research on DD in drug addiction, the neural bases of DD in obesity, and potential clinical applications.


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