What is the main research question of Lobschat et al. (2017)?
Whether online banner ads affect both online and offline sales differently depending on customer segment.
Which customer segment responds most to banner ads?
Multichannel customers show the strongest uplift in online sales from banner ads.
Do online banner ads influence offline sales?
No, there is no significant cross-channel effect; banner ads do not increase in-store purchases.
What is the impact of banner ads on online-only customers?
Positive online sales response, but weaker than multichannel customers.
How do offline-only customers respond to online banner ads?
They show little to no sales uplift—both online and offline.
What is a key managerial implication for ad targeting?
Online ads should be targeted toward online and multichannel customers, while offline tactics should target offline-only segments.
What concept explains varying ad effectiveness across segments?
Segment-specific responsiveness: customers behave differently based on their habitual channel usage.
What type of data does the study use?
Purchase and ad exposure panel data from a large European multichannel retailer.