2018 Facebook ad that was used for a split-sample advertising test in Arthur's marketing research course.

2018 Facebook ad for Kathy's pottery
NOTE: This ad was part of a split-sample experiment that Arthur's business students used to study interaction effects among explanatory variables. As it turns out, using this particular ad - which included a vividly colored photo and the "recreational pot" tagline produced significantly more Facebook likes and shares than would have been expected if the combined effect of those two experimental variables was simply the linear sum of their individual effects.

Incandescent

2018 Facebook post.