Here’s my Q&A column from the WSJ this week — and if you have any questions for me, you can tweet them to @danariely with the hashtag #askariely, post a comment on my Ask Ariely Facebook page, or email them to AskAriely@wsj.com.

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Dear Dan,

Yesterday, I lost my phone in the woods and spent hours looking for it. Many hours later, with the help of my mother and the “Find My iPhone” app, we found it in the snow. It was a lot of effort—the hardest scavenger hunt we’ve ever been on—but I’ve never had so much fun or appreciated my phone as much as I did that day. I know that, in general, making a major effort leads people to love something more when they create it (as you have argued with the “IKEA effect”). Does this principle apply to finding a lost item too?

—Niv 

Yes. Our appreciation for an item isn’t just about creating it; it is also about the connection we make with it. Every time you invest effort in some object (as in your hunt in the woods), you strengthen your link with the item, and you like it more.

But before you start losing items on purpose, let me point out two limits to your exciting discovery. First, the joy and increased attachment that you experienced was probably yours alone. I can’t imagine that your mother felt the same affection for your phone after rooting around in the snow. Second, the surge of fun and fondness about this particular item isn’t something you’d want to experience multiple times a year—so hang on to your phone.

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Dear Dan,

 I’ve been reading that chain restaurants with many branches are now required to post calorie information. Do you think this will push people to eat better or not?

—Paul 

Probably not. The experiments that we’ve done on the impact of this sort of calorie information on eating behavior have shown scant effects on what people order. There seems to be a gap that prevents us from translating knowledge into action, and just giving people the data clearly doesn’t do the trick. People often tell me that knowing a menu item’s calorie count influences their ordering, but the research data on this suggests that such effects are very small at best.

There may also be a downside to posting the calories: We know that the presence of “healthy” side dishes can make people feel entitled to order “unhealthy” entrees. Darren Dahl and his colleagues have shown, for example, that the simple presence of a healthy item on a menu increases the likelihood that customers will order the least healthy options. The basic principle is called “licensing”: When we do something that we think is good (like ordering a small salad), we feel that it balances out a subsequent “bad” action (like eating a double cheeseburger).

Given these findings, I predict that we will see more calorie listings on menus, with more items such as side salads as healthy options. People will order these salads—often with gloppy and highly caloric dressing—and continue eating other high-calorie items. Don’t expect it to help our waistlines.

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Dear Dan,

Is regifting OK? Over the years, I’ve received plenty of gifts that I didn’t want, and I’m thinking about getting rid of them this holiday season. Can I tell the people that I’m regifting what I’m doing?

—Beth 

In general, I consider regifting a wonderful practice. So long as the present that you are regifting is something that you think the new owner will appreciate, you aren’t just giving them something that they will like; you are preventing waste and saving money.

As to whether you can tell your friends and family that you’ve regifted them a present, sadly, we still aren’t a sufficiently enlightened society. So for now, I would slap on fresh wrapping paper and keep the history of the gift a secret.

See the original article in the Wall Street Journal here.