Loss aversion, the principle that losses impact decision making more than equivalent gains, is a fundamental idea in consumer behavior and decision making, though its existence has recently been called into question. Across five unique samples (Ntotal = 17,720), we tested predictions about what...

In the months before the 2020 U.S. election, several campaign websites added pre-checked boxes (defaults), automatically making donations into recurring weekly contributions unless donors unchecked them. Since these changes occurred at different times for different campaigns, we measure the...

Shaping choices -- Plausible paths -- Assembled preferences -- Goals of choice architecture -- Decisions by default -- How many options? -- Putting things in order -- Describing options -- Building choice engines -- Becoming better choice architects.