This paper examines the impact of COVID-19 vaccination on food insecurity in the United States, using data from the Household Pulse Survey. Our primary research design exploits variation in vaccine eligibility across states over time as an instrumental variable to address the endogeneity of...

Purpose – This paper seeks to examine whether the follower extensions with superior alignable differences can overcome the pioneer extensions with regard to brands. Design/methodology/approach – Three laboratory experiments were conducted to test hypotheses. Findings – Findings suggest...

A new version of the RE–EM regression tree method for longitudinal and clustered data is presented. The RE–EM tree is a methodology that combines the structure of mixed effects models for longitudinal and clustered data with the flexibility of tree-based estimation methods. The RE–EM tree...

Purpose – The purpose of this study is to examine whether the context of ad pictures differs between Chinese ads and US ads and whether it can influence consumers' ad attitudes. Design/methodology/approach – An ad content analysis and a laboratory experiment were conducted to test the...