Results 11 to 20 of about 10,745,166 (286)

Research practices and statistical reporting quality in 250 economic psychology master's theses: a meta-research investigation [PDF]

open access: yesRoyal Society Open Science, 2019
The replicability of research findings has recently been disputed across multiple scientific disciplines. In constructive reaction, the research culture in psychology is facing fundamental changes, but investigations of research practices that led to ...
Jerome Olsen   +3 more
doaj   +1 more source

Investigating the Relationship Between Self-Efficacy and Academic Performance in Females with Meta-Analysis [PDF]

open access: yesفصلنامه زن و جامعه, 2022
Objective: The aim of this research is to combine the studies’ results that had been made on self-efficacy on academic performance of females.Method: The method of this research is meta-analysis.
Siavosh Sheikhalizade, Tohid ashrafzade
doaj   +1 more source

Ratios and effect size. [PDF]

open access: yesJournal of Experimental Psychology: Animal Learning and Cognition, 2017
Responding to a related pair of measurements is often expressed as a single discrimination ratio. Authors have used various discrimination ratios; yet, little information exists to guide their choice. A second use of ratios is to correct for the influence of a nuisance variable on the measurement of interest.
openaire   +2 more sources

Determination of the Sample Size on Different Independent K Group Comparisons by Power Analysis

open access: yesTürkiye Tarımsal Araştırmalar Dergisi, 2021
The purpose of this study was to determine the number of samples that should be used in independent treatment comparisons with different effect sizes (0.25-3.0), the number of treatments (2-5), and the power of the test (70% -95%) in single and multi ...
Emre ASLAN, Özgür KOŞKAN, Yasin ALTAY
doaj   +1 more source

Meta-Analysis of the Relationship between Investor Sentiment and Stock Returns [PDF]

open access: yesفصلنامه بورس اوراق بهادار, 2021
The objective of this paper is to offers a Meta - analysis of the relationship between Investor Sentiment and Stock Returns . Although it is taken for granted in the scientific research area that sentiment do influence stock returns , they have produced ...
ABDOULGAFOUR Mohammadzadeh   +2 more
doaj   +1 more source

Statistical significant change versus relevant or important change in (quasi) experimental design: some conceptual and methodological problems in estimating magnitude of intervention-related change in health services research

open access: yesInternational Journal of Integrated Care, 2002
This paper aims to identify problems in estimating and the interpretation of the magnitude of intervention-related change over time or responsiveness assessed with health outcome measures.
Berrie Middel, Eric van Sonderen
doaj   +1 more source

A Practical Primer To Power Analysis for Simple Experimental Designs

open access: yesInternational Review of Social Psychology, 2018
Power analysis is an important tool to use when planning studies. This contribution aims to remind readers what power analysis is, emphasize why it matters, and articulate when and how it should be used. The focus is on applications of power analysis for
Marco Perugini   +2 more
doaj   +1 more source

Observation of the beam-size effect at HERA [PDF]

open access: yes, 1995
A precise measurement of the spectrum of the photons from $ep$ bremsstrahlung with the ZEUS luminosity monitor at HERA is reported. The measurement shows a reduced rate compared to the Bethe-Heitler spectrum for photon energies below 5~GeV.
A.E. Blinov   +8 more
core   +1 more source

Too Good to be False: Nonsignificant Results Revisited

open access: yesCollabra: Psychology, 2017
Due to its probabilistic nature, Null Hypothesis Significance Testing (NHST) is subject to decision errors. The concern for false positives has overshadowed the concern for false negatives in the recent debates in psychology.
Chris H. J. Hartgerink   +2 more
doaj   +1 more source

Detecting Neuroimaging Biomarkers for Psychiatric Disorders: Sample Size Matters

open access: yesFrontiers in Psychiatry, 2016
Recently it was suggested that much larger cohorts are needed to prove the diagnostic value of neuroimaging biomarkers in psychiatry. While within a sample increase of diagnostic accuracy of schizophrenia with number of subjects (N) has been shown, the ...
Hugo eSchnack, Rene eKahn
doaj   +1 more source

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