This study looks at how national public opinion polling in the United States changed from 2000 to 2022. It focuses on two aspects: the sample source(s) – that is, where the survey takers came from – ...

Cohort studies are a type of research design. They are also called longitudinal studies because they follow groups of people over time. Results from cohort studies can help people understand human ...

In-store samples increase sales, both in the immediate and extended time frame. Sampling drives sharper and more sustained sales than end-of-aisle displays. If incremental cost of a sampling event ...

Consumers love free samples. And while retailers and manufacturers recognize sampling as an important marketing strategy, until now few understood sampling’s effectiveness. PromoWorks commissioned an ...