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Group Design

Group Design

The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between...

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Author Spotlight: Validation of SICOLE-R for Assessing Cognitive and Reading Skills in Spanish-Speaking Children and Its Role in Personalized Education

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Planned missing data in early literacy interventions: A replication study with an additional gold standard.

Ralph C A Rippe¹, Inge Merkelbach²

¹Research Methods and Statistics, Institute of Education and Child Studies, Leiden University, Leiden, The Netherlands.

|March 29, 2021

Summary

This summary is machine-generated.

Replication of early literacy intervention results requires precise "gold standard" measures. Only the most accurate assessments successfully replicated findings, highlighting the importance of high-quality data in research.

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Area of Science:

Child Development
Educational Psychology
Research Methodology

Background:

Late preterm infants in digital early literacy interventions showed varied outcomes.
Replication of previous findings was complicated by the quality of assessment measures used.
Gold standard measures, while sensitive, are often time-intensive and costly.

Purpose of the Study:

To investigate the impact of different definitions of "gold standard" measures on the replication of digital early literacy intervention results.
To explore how measure precision affects the reliability of findings in randomized controlled trials (RCTs).

Main Methods:

A randomized controlled trial (RCT) involving 695 primary school pupils (normal and late preterm birth).
Comparison of simpler, complete measures with high-quality, potentially incomplete "gold standard" measures in a subsample.
Evaluation of five different definitions of gold standard alignment.

Main Results:

Two out of five gold standard definitions improved precision compared to original results.
The least precise gold standard definition diminished precision.
Only the most precise gold standard definition successfully replicated the original study findings.
Specific factors like alphabetical and writing-only measures yielded comparable estimates to original results.

Conclusions:

The successful replication of RCT results using gold standard measures is contingent upon sufficiently high convergent validity.
Careful selection and definition of high-quality measures are crucial for reliable research outcomes in early literacy interventions.