Final answer:
Impulse spending at the grocery store is often influenced by shopping with others or redeeming many coupons, which can lead to purchasing unplanned items. Shopping after eating and using a list are ways to prevent impulse buys. Consumer optimism also affects general spending patterns, including impulse purchases.
Step-by-step explanation:
The options provided are concerning behaviors that can lead to impulse spending at the grocery store. Impulse spending is significantly influenced by various factors. Shopping with others can lead to more impulse buys, as group members may influence each other to purchase items that weren't on a shopping list. It is however often recommended to shop after eating, as this can reduce the likelihood of purchasing unnecessary food items due to hunger-induced cravings. Using a list is actually a preventive measure against impulse spending, as it encourages shoppers to stick to planned purchases. Redeeming as many coupons as possible might lead to buying items that are not really needed, just because they are on offer.
When considering broader economic patterns, consumer optimism plays a role in spending behaviors – during times of high optimism or emergencies, spending might increase. Lastly, an economist might refer to the term 'consumer surplus' when a shopper gets a 'good deal' on a product, meaning they are able to purchase something for less than what they were willing to pay.