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Recommendations for Increasing Replicability in Psychology
Replicability of findings is at the heart of any empirical science. The aim of this article is to move the current replicability debate in psychology towards concrete recommendations for improvement.Expand
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The Rules of the Game Called Psychological Science
If science were a game, a dominant rule would probably be to collect results that are statistically significant. Several reviews of the psychological literature have shown that around 96% of papersExpand
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A dynamical model of general intelligence: the positive manifold of intelligence by mutualism.
Scores on cognitive tasks used in intelligence tests correlate positively with each other, that is, they display a positive manifold of correlations. The positive manifold is often explained byExpand
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The (mis)reporting of statistical results in psychology journals
In order to study the prevalence, nature (direction), and causes of reporting errors in psychology, we checked the consistency of reported test statistics, degrees of freedom, and p values in aExpand
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Meta-analysis of psychological treatments for posttraumatic stress disorder in adult survivors of childhood abuse.
Posttraumatic stress disorder (PTSD) is highly prevalent in adult survivors of childhood sexual and/or physical abuse. However, intervention studies focusing on this group of patients areExpand
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Meta-analysis of associations between human brain volume and intelligence differences: How strong are they and what do they mean?
Positive associations between human intelligence and brain size have been suspected for more than 150 years. Nowadays, modern non-invasive measures of in vivo brain volume (Magnetic ResonanceExpand
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Remission from post-traumatic stress disorder in adults: a systematic review and meta-analysis of long term outcome studies.
Posttraumatic stress disorder (PTSD) is a frequent mental disorder associated with significant distress and high costs. We conducted the first systematic review and meta-analysis on spontaneousExpand
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The prevalence of statistical reporting errors in psychology (1985–2013)
This study documents reporting errors in a sample of over 250,000 p-values reported in eight major psychology journals from 1985 until 2013, using the new R package “statcheck.” statcheck retrievedExpand
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A cognitive and an affective dimension of alexithymia in six languages and seven populations
The Dutch Bermond–Vorst Alexithymia Questionnaire (BVAQ) is translated into various languages. The aim of this research was to establish the factor structure of subscales on seven cultural groups.Expand
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Are intelligence tests measurement invariant over time? Investigating the nature of the Flynn effect
The gains of scores on standardized intelligence tests (i.e., Flynn effect) have been the subject of extensive debate concerning their nature, causes, and implications. The aim of the present studyExpand
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