KEY POINTS
  • "When the consumer is happy or feels good, they're more likely to be in the stores and doing things experiential because it's fun," says Jan Rogers Kniffen.
  • That trend is a boon for brick-and-mortar stores, but it could pinch Amazon's sales in the fourth quarter, the ex-department store executive says.
  • Total holiday shopping sales could increase 5.5 percent in 2018, as they did last year, predicts Kniffen.

High consumer confidence could drive shoppers out of the house and into brick-and-mortar stores this holiday season, former longtime department store executive Jan Rogers Kniffen told CNBC on Monday.

In turn, that could put a dent in Amazon's fourth-quarter sales, he added.