scholarly journals Hedonic Estimation Under Very General Conditions Using Experimental and Quasi-Experimental Designs

2013 ◽  
Author(s):  
Chris Rohlfs ◽  
Ryan Sullivan ◽  
Thomas J. Kniesner
Keyword(s):  
Experimental Designs ◽  
Quasi Experimental ◽  
General Conditions ◽  
Hedonic Estimation

PENGARUH MODEL PEMBELAJARAN MARIA MONTESSORI TERHADAP PENGEMBANGAN KEDISIPLINAN ANAK USIA 4-5 TAHUN DI TK ISLAM IBNU QOYYIM KEC. MEDAN SELAYANG

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Fatma Gustina ◽  
Khadijah Khadijah ◽  
Fauziah Nasution
Keyword(s):  
Hypothesis Testing ◽  
Experimental Research ◽  
Learning Model ◽  
Experimental Designs ◽  
Maria Montessori ◽  
Post Test ◽  
Quasi Experimental ◽  
Group A

<p><em>This research was conducted at TK Islam Ibnu Qoyyim, Medan Selayang District. Tthe type of research is experimental research with uses Quasi Experimental Designs. This study aims to determine the influence of Maria Montessori's learning model on the discipline of children in TK Islam Ibnu Qoyyim. The results showed that the Montessori learning model had an effect on the discipline of group A children. The results of the pretest class were 9.3 and the post-test average was 16.80 with the highest post-test 20 and the lowest post-test 12. Class control with an average pre test 9.7 and the average post test 11.7 with the highest value 16 and the lowest value 7. The results of hypothesis testing obtained t count&gt; t table is 18.31&gt; 2.048 with significant numbers. Thus the hypothesis Ho is rejected and Ha is accepted so that it is stated that there is a Significant Effect of Maria Montessori's Learning Model on the Discipline of Group A Children 4-5 Years Old in the TK Islam Ibnu Qoyyim.</em><em></em></p>

scholarly journals Children’s Label-Learning Experience within Superordinate Categories Facilitates their Generalization of Labels for Additional Category Members

2017 ◽  
Vol 21 (1) ◽  
pp. 51-83
Author(s):  
Emily E. Russell
Keyword(s):  
Perceptual Organization ◽  
Learning Experience ◽  
Experimental Designs ◽  
Learning Ability ◽  
Future Research ◽  
Learning Biases ◽  
Quasi Experimental ◽  
Multiple Accounts ◽  
The Relationship ◽  
Specific Label

Abstract In two studies, we tested the relationship between children’s label-learning experience and label-learning ability within diverse superordinate categories with complex perceptual organization (animals, clothing, foods). Using both quasi-experimental and experimental designs, we examined 18- and 24-month-old children’s ability to generalize labels for novel members of superordinate categories as a product of their previous experience in learning labels for members of those categories. As predicted, children properly generalized more labels for members of the categories within which they had more label-learning experience than for members of the categories within which they had less label-learning experience. Results are consistent with the idea that children develop category-specific label-learning biases through their experience in learning labels for category members; they carry implications for multiple accounts of vocabulary acquisition and identify directions for future research.

scholarly journals Speculations on Quasi-Experimental Design in HIV/AIDS Prevention Research

2012 ◽  
Vol 3 (1) ◽  
pp. 52
Author(s):  
Donald T. Campbell ◽  
Beatrice J. Krauss
Keyword(s):  
Experimental Design ◽  
Hiv Prevention ◽  
Research Design ◽  
Research Community ◽  
Experimental Designs ◽  
Prevention Research ◽  
Quasi Experimental ◽  
Aids Research ◽  
Speculative Discussion ◽  
Hiv Aids

This paper provides a speculative discussion on what quasi-experimental designs might be useful in various aspects of HIV/AIDS research. The first author’s expertise is in research design, not HIV, while the second author has been active in HIV prevention research. It is hoped that it may help the HIV/AIDS research community in discovering and inventing an expanded range of possibilities for valid causal inference. DOI:10.2458/azu_jmmss_v3i1_campbell

scholarly journals Graphical Models for Quasi-experimental Designs

2015 ◽  
Vol 46 (2) ◽  
pp. 155-188 ◽  
Author(s):  
Peter M. Steiner ◽  
Yongnam Kim ◽  
Courtney E. Hall ◽  
Dan Su
Keyword(s):  
Graphical Models ◽  
Instrumental Variable ◽  
Regression Discontinuity ◽  
Experimental Designs ◽  
Causal Effects ◽  
Confounding Bias ◽  
Randomized Controlled ◽  
Quasi Experimental ◽  
Causal Graphs ◽  
Latent Subgroups

Randomized controlled trials (RCTs) and quasi-experimental designs like regression discontinuity (RD) designs, instrumental variable (IV) designs, and matching and propensity score (PS) designs are frequently used for inferring causal effects. It is well known that the features of these designs facilitate the identification of a causal estimand and, thus, warrant a causal interpretation of the estimated effect. In this article, we discuss and compare the identifying assumptions of quasi-experiments using causal graphs. The increasing complexity of the causal graphs as one switches from an RCT to RD, IV, or PS designs reveals that the assumptions become stronger as the researcher’s control over treatment selection diminishes. We introduce limiting graphs for the RD design and conditional graphs for the latent subgroups of compliers, always takers, and never takers of the IV design, and argue that the PS is a collider that offsets confounding bias via collider bias.

scholarly journals The Effect Of Endurance Exercise On The Body's Defenses To Prevent Transmission Of The Covid Virus 19 For Student Penjaskesrek Undana

KINESTETIK ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 245-255
Author(s):  
Veramyta Maria Martha Flora Babang ◽  
Maria Andriani Barek Ladjar ◽  
Ronald Dwi Ardian Fufu
Keyword(s):  
Experimental Study ◽  
Physical Fitness ◽  
Endurance Exercise ◽  
Comparison Group ◽  
Female Students ◽  
Experimental Designs ◽  
Group Design ◽  
The World ◽  
Quasi Experimental ◽  
Exercise Endurance

Starting from the spread of viruses Covid 19 that swept across the world in particular in Indonesia, bringing the idea to create research that contribute in dealing with viruses Covid 19. This study aims to determine the effect of endurance exercise on the body's defenses to prevent transmission of the virus covid 19 for student penjaskesrek Undana. This research is an experimental study of Quasi-Experimental Designs by using Nonequivalent Comparison Group Design which compares the effect of endurance training on the two levels of physical fitness categories of Penjaskesrek students, those who have very Low and Low categories.Samples were 12 female students from Penjaskesrek Undana in semester 2, 4 and 6, where 6 people were in the less physical fitness category, and 6 in the physical fitness category were very Low.The findings of this study include; 1) In the group of physical fitness Low are Effect of Exercise Endurance Resilience Body face Virus Covid 19 on the students Penjaskesrek Undana significantly, 2) In the group of physical fitness is very Low are Effect of Exercise Endurance Resilience Body face Virus Covid 19 on the students Penjaskesrek Undana significantly.So, the conclusion is that endurance exercises are more effective in increasing endurance to deal with the Covid 19 virus.

Designing Experiments

2015 ◽  
pp. 82-96
Keyword(s):  
Experimental Design ◽  
Internal Validity ◽  
Random Selection ◽  
Experimental Designs ◽  
Control Groups ◽  
Test Measurement ◽  
Post Test ◽  
Quasi Experimental ◽  
And Control

In this chapter, students will learn the process of designing experiments. The classic experimental design is presented first. Following this, three distinct quasi-experimental designs are presented. The benefits and burdens of the classic and quasi-experimental designs are discussed in depth. By the end of this chapter, students will understand concepts related to random selection, generalizability, treatment and control groups, pre- and post-test measurement of the dependent variable, and internal validity.

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