Patterns of volatile diversity yield insights into the genetics and biochemistry of the date palm fruit volatilomeJonathan Flowers, Khaled Hazzouri, Alain Lemansour, Tiago Capote, Muriel Gros-Balthazard, Sylvie Ferrand, Marc Lebrun, Khaled Amiri & Michael Purugganan
Volatile organic compounds are key components of the fruit metabolome that contribute to traits such as aroma and taste. Here we report on the diversity of 90 flavor-related fruit traits in date palms (Phoenix dactylifera L.) including 80 volatile organic compounds, which collectively represent the fruit volatilome, as well as 6 organic acids, and 4 sugars in tree-ripened fruits. We characterize these traits in 148 date palms representing 135 varieties using headspace solid-phase microextraction gas...
Data and code to replicate the analyses in "Group Identities Can Undermine Social Tipping after Intervention"
The objective of this study is to test whether using a red color would influence the perceived diagnosticity of left vs. right digits.
This research seeks to examine the effect of national identification on perceptions of the Civil Rights Movement with potential implications on support for modern-day collective action. We will manipulate national identification salience to examine its effect on interpretations of the Civil Rights Movement, as well as support for social change and collective action.
This study is designed to evaluate the assumption that presenting the focal digits in red will increase the perceived diagnosticity of these digits.
This study is to test the effects of psychological distance on perceived diagnosticity of left vs. right digits.
This study is about perceived competence in facial features of real-world politicians and the effect of perceived competence on election judgments made by observers who do not know these politicians. We are investigating whether changing facial features result in changing perception of competence and election judgments.
The level of distrust in leaders and institutions in the contemporary United States is palpable. There is scholarly and pundit concern about the impending demise of U.S. democracy if citizens refrain from participating in politics or participate but condition their political behavior and decisions on high levels of distrust. In two surveys (yet to be conducted), we propose to analyze and explore several possible patterns in reported cynicism and distrust among U.S.-based online respondents. Many...
This study investigates whether planning mechanisms differ with planning task complexity and how basic cognitive abilities can explain individual variability in planning abilities
Welcome to my research! This research focus on students engagement under masking-wearing and the presence of noise (SNR less than 15 dB).
This study employs a survey experiment to understand how race and class impact perceptions of risk in a pandemic and if those patterns differ when alters are wearing masks.
How does teleological information about the function of an animal category's features shape predictions about the future distribution of those features?
This project examines how children and adults from China and the US use social categories with and without salient biological markers to make social categorization and inductive reasoning judgments.
Settlers flocking to “boomtowns” on the American western frontier were faced with the same task that communities in weak states across the globe face: self-governance. Peer sanctions can enforce cooperation in these environments, but their efficacy depends on the social networks that transmit information from peer to peer. Peripheral network positions can generate such strong incentives to misbehave that persistent cheating obtains in equilibrium. Groups maintaining high levels of cooperation that face shocks to their...
This a pre-registration for an empirical study examining the developmental roots of objectification at the intersection of race and gender.
In recent years, significant progress has been made towards ensuring equality in the education of children with disabilities in Nepal. The 2017 Rights of Persons with Disabilities Act prohibits discrimination and violence based on disability (Holmes et al., 2018; Prasai & Pant, 2018), and there are more than 350 inclusive education classes and 35 special education schools across the country (UNICEF, 2018). However, children with disabilities are still more likely to be susceptible to the...
Two additional measures were added to this study. See summary for description.
Long-Term Follow-up for Impact Evaluation of the Obirodh: Road to Tolerance Youth Leadership Training Program in Bangladeshi UniversitiesPeter Vining, Cyrus Samii & Michael Gilligan
This PAP is for a long-term impact evaluation of a USAID-sponsored preventing and countering violent extremism (P/CVE) strategy that was implemented as an RCT during 2019 and 2020. The intervention tested was designed to train prosocial individuals how to safely publicize and reinforce norms against extremist views and behaviors, as well as against antecedent attitudes of intolerance and acceptability of violence. Specifically, rather than attempting to identify and neutralize individual extremists, this program attempted to...
This document describes our strategy to learn about the determinants of assistance to refugees. We are interested in finding out what type of people help refugees and why and how the helping behavior might be encouraged. The document includes the protocols and instruments that will be used in the field.