Savannah C Lewis
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View article: Individual vs Systemic: The pedagogical approaches to solutions of the replication crisis
Individual vs Systemic: The pedagogical approaches to solutions of the replication crisis Open
With increased interest in the replication crisis and the open science movement, it is important to examine the implications of communicating these topics to undergraduate psychology students. At the beginning of the open science movement,…
View article: Accuracy in Parameter Estimation and Simulation Approaches for Sample Size Planning with Multiple Stimuli
Accuracy in Parameter Estimation and Simulation Approaches for Sample Size Planning with Multiple Stimuli Open
The planning of sample size for research studies often focuses on obtaining a significant result given a specified level of power, significance, and an anticipated effect size. This planning requires prior knowledge of the study design and…
View article: Individual vs Systemic: How Teaching Approaches to Improving Research Practices Impact Students’ Trust, Motivation, and Optimism About the Future?
Individual vs Systemic: How Teaching Approaches to Improving Research Practices Impact Students’ Trust, Motivation, and Optimism About the Future? Open
Background: The replication crisis and open science movement have raised questions about how to communicate these issues to psychology students. Early discussions framed solutions at both the individual (e.g., preregistration, open data) a…
View article: Can Results-Blind Selection Improve Science Communication?
Can Results-Blind Selection Improve Science Communication? Open
Journalists are often maligned for covering sensational or desirable research results at the expense of studies with stronger methods. The present study tests whether such journalistic bias exists, and if it is reduced when studies are sel…
View article: Multi-region investigation of ‘man’ as default in attitudes
Multi-region investigation of ‘man’ as default in attitudes Open
Previous research has studied the extent to which men are the default members of social groups in terms of memory, categorization, and stereotyping, but not attitudes which is critical because of attitudes’ relationship to behavior. Result…
View article: What defines big team science?
What defines big team science? Open
This paper examined the nature of publications in Big Team Science (BTS): large-scale collaborations between multiple researchers at multiple institutions. These projects can improve research by initiating collaborations that span across t…
View article: Think Political Leader – Think He or She? A Multi-Country Test of a Gender Fair Language Intervention for Stereotype Bias
Think Political Leader – Think He or She? A Multi-Country Test of a Gender Fair Language Intervention for Stereotype Bias Open
Women are greatly underrepresented in positions of political leadership around the world. In seeking to explain this underrepresentation, some researchers have pointed to people’s tendencies to stereotype leaders as more similar to men tha…
View article: Measuring the Semantic Priming Effect Across Many Languages
Measuring the Semantic Priming Effect Across Many Languages Open
Semantic priming has been studied for nearly 50 years across various experimental manipulations and theoretical frameworks. Although previous studies provide insight into the cognitive underpinnings of semantic representations, they have s…
View article: Multi-region investigation of ‘man’ as default in attitudes
Multi-region investigation of ‘man’ as default in attitudes Open
Though people usually imagine the typical person as a man rather than a woman, the effect is mixed for racial groups and understudied among traditionally male social groups (e.g., police and criminals) and non-U.S. populations. Results fro…
View article: Registered Replication Report: A Large Multilab Cross-Cultural Conceptual Replication of Turri et al. (2015)
Registered Replication Report: A Large Multilab Cross-Cultural Conceptual Replication of Turri et al. (2015) Open
According to the justified true belief (JTB) account of knowledge, people can truly know something only if they have a belief that is both justified and true (i.e., knowledge is JTB). This account was challenged by Gettier, who argued that…
View article: Large-scale cross-societal examination of real- and minimal-group biases
Large-scale cross-societal examination of real- and minimal-group biases Open
Biases in favor of culturally prevalent social ingroups are ubiquitous, but random assignment to arbitrary experimentally created social groups is also sufficient to create ingroup biases (i.e., the minimal group effect; MGE). The extent t…
View article: Large-scale cross-societal examination of real- and minimal-group biases
Large-scale cross-societal examination of real- and minimal-group biases Open
Biases in favor of culturally prevalent social ingroups are ubiquitous, but random assignment to arbitrary experimentally created social groups is also sufficient to create ingroup biases (i.e., the minimal group effect; MGE). The extent t…
View article: Structural Validity Evidence for the Oxford Utilitarianism Scale Across 15 Languages
Structural Validity Evidence for the Oxford Utilitarianism Scale Across 15 Languages Open
Background: The Psychological Science Accelerator (PSA) recently completed a large-scale moral psychology study using translated versions of the Oxford Utilitarianism Scale (OUS). However, the translated versions have no validity evidence.…
View article: Structural Validity Evidence for the Oxford Utilitarianism Scale Across 15 Languages
Structural Validity Evidence for the Oxford Utilitarianism Scale Across 15 Languages Open
Background The Psychological Science Accelerator (PSA) recently completed a large-scale moral psychology study using translated versions of the Oxford Utilitarianism Scale (OUS). However, the translated versions have no validity evidence. …
View article: Accuracy in Parameter Estimation and Simulation Approaches for Sample Size Planning with Multiple Stimuli
Accuracy in Parameter Estimation and Simulation Approaches for Sample Size Planning with Multiple Stimuli Open
The planning of sample size for research studies often focuses on obtaining a significant result given a specified level of power, significance, and an anticipated effect size. This planning requires prior knowledge of the study design and…
View article: Who does big team science?
Who does big team science? Open
This paper examined the nature of publications in Big Team Science (BTS): large-scale collaborations between multiple researchers at multiple institutions. These projects can improve research by initiating collaborations that span across t…
View article: Investigating Object Orientation Effects Across 18 Languages
Investigating Object Orientation Effects Across 18 Languages Open
Mental simulation theories of language comprehension propose that people automatically create mental representations of objects mentioned in sentences. Mental representation is often measured with the sentence-picture verification task, wh…
View article: The Psychological Science Accelerator’s COVID-19 rapid-response dataset
The Psychological Science Accelerator’s COVID-19 rapid-response dataset Open
View article: In COVID-19 Health Messaging, Loss Framing Increases Anxiety with Little-to-No Concomitant Benefits: Experimental Evidence from 84 Countries
In COVID-19 Health Messaging, Loss Framing Increases Anxiety with Little-to-No Concomitant Benefits: Experimental Evidence from 84 Countries Open
View article: Author Correction: A multi-country test of brief reappraisal interventions on emotions during the COVID-19 pandemic
Author Correction: A multi-country test of brief reappraisal interventions on emotions during the COVID-19 pandemic Open
View article: PSACR: The Psychological Science Accelerator's COVID-19 Rapid-Response Dataset
PSACR: The Psychological Science Accelerator's COVID-19 Rapid-Response Dataset Open
In response to the COVID-19 pandemic, the Psychological Science Accelerator coordinated three large-scale psychological studies to examine the effects of loss-gain framing, cognitive reappraisals, and autonomy framing manipulations on beha…
View article: A global experiment on motivating social distancing during the COVID-19 pandemic
A global experiment on motivating social distancing during the COVID-19 pandemic Open
Finding communication strategies that effectively motivate social distancing continues to be a global public health priority during the COVID-19 pandemic. This cross-country, preregistered experiment ( n = 25,718 from 89 countries) tested …
View article: PSACR: The Psychological Science Accelerator's COVID-19 Rapid-Response Dataset
PSACR: The Psychological Science Accelerator's COVID-19 Rapid-Response Dataset Open
In response to the COVID-19 pandemic, the Psychological Science Accelerator coordinated three large-scale psychological studies to examine the effects of loss-gain framing, cognitive reappraisals, and autonomy framing manipulations on beha…
View article: A Roadmap to Large-Scale Multi-Country Replications in Psychology
A Roadmap to Large-Scale Multi-Country Replications in Psychology Open
Classic findings from psychology and the behavioural sciences are increasingly being revisited. Methodological and technological advances provide opportunities to replicate studies across a wide range of countries and settings to investiga…
View article: A multi-country test of brief reappraisal interventions on emotions during the COVID-19 pandemic
A multi-country test of brief reappraisal interventions on emotions during the COVID-19 pandemic Open
View article: A Global Experiment on Motivating Social Distancing during the COVID-19 Pandemic
A Global Experiment on Motivating Social Distancing during the COVID-19 Pandemic Open
Finding communication strategies that effectively motivate social distancing continues to be a global public health priority during the COVID-19 pandemic. This cross-country, preregistered experiment (n = 25,718 from 89 countries) tested h…
View article: A Global Experiment on Motivating Social Distancing during the COVID-19 Pandemic
A Global Experiment on Motivating Social Distancing during the COVID-19 Pandemic Open
Finding communication strategies that effectively motivate social distancing continues to be a global public health priority during the COVID-19 pandemic. This cross-country, preregistered experiment (n = 25,718 from 89 countries) tested h…
View article: To which world regions does the valence–dominance model of social perception apply?
To which world regions does the valence–dominance model of social perception apply? Open
View article: A global test of brief reappraisal interventions on emotions during the COVID-19 pandemic
A global test of brief reappraisal interventions on emotions during the COVID-19 pandemic Open
The COVID-19 pandemic has increased negative emotions and decreased positive emotions globally. Left unchecked, these emotional changes might have a wide array of adverse impacts. To reduce negative emotions and increase positive emotions,…
View article: To Which World Regions Does the Valence-Dominance Model of Social Perception Apply? [ Registered Report Stage 1 - Protocol]
To Which World Regions Does the Valence-Dominance Model of Social Perception Apply? [ Registered Report Stage 1 - Protocol] Open
ABSTRACT: Over the last ten years, Oosterhof and Todorov’s valence-dominance model has emerged as the most prominent account of how people evaluate faces on social dimensions. In this model, two dimensions (valence and dominance) un…