Fairly certain it wasn't but was it this Google study instead? https://rework.withgoogle.com/print/guides/5721312655835136/ https://rework.withgoogle.com/print/

Fairly certain it wasn't but was it this Google study instead? https://rework.withgoogle.com/print/guides/5721312655835136/ https://rework.withgoogle.com/print/guides/5721312655835136/