There's a concept (inspired by a Metafilter blog post) of ask culture vs. guess culture. In "ask culture," it's socially acceptable to ask for a favor -- staying over at a friend's house, requesting a raise or a letter of recommendation -- and equally acceptable to refuse a favor. Asking is literally just inquiring if the request will be granted, and it's never wrong to ask, provided you know you might be refused. In "guess culture," however, you're expected to guess if your request is appropriate, and you are rude if you accidentally make a request that's judged excessive or inappropriate. You can develop a reputation as greedy or thoughtless if you make inappropriate requests.
When an asker and a guesser collide, the results are awful. I've seen it in marriages, for example.
Husband: "Could you iron my shirt? I have a meeting today."
Wife: "Can't you see I'm packing lunches and I'm not even dressed yet? You're so insensitive!"
Husband: "But I just asked. You could have just said no if you were too busy -- you don't have to yell at me!"
Wife: "But you should pay enough attention to me to know when you shouldn't ask!"
It's not clear how how the asking vs. guessing divide works. Some individual people are more comfortable asking than guessing, and vice versa. It's also possible that some families, and some cultures, are more "ask-based" than "guess-based." (Apparently East Asia is more "guess-based" than the US.) It also varies from situation to situation: "Will you marry me?" is a question you should only ask if you know the answer is yes, but "Would you like to get coffee with me?" is the kind of question you should ask freely and not worry too much about rejection.
There's a lot of scope for rationality in deciding when to ask and when to guess. I'm a guesser, myself. But that means I often pass up the opportunity to get what I want, because I'm afraid of being judged as "greedy" if I make an inappropriate request. If you're a systematic "asker" or a systematic "guesser," then you're systematically biased, liable to guess when you should ask and vice versa.
In my experience, there are a few situations in which you should experiment with asking even if you're a guesser: in a situation where failure/rejection is so common as to not be shameful (i.e. dating), in a situation where it's someone's job to handle requests, and requests are common (e.g. applying for jobs or awards, academic administration), in a situation where granting or refusing a request is ridiculously easy (most internet communication.) Most of the time when I've tried this out I've gotten my requests granted. I'm still much more afraid of being judged as greedy than I am of not getting what I want, so I'll probably always stay on the "guessing" end of the spectrum, but I'd like to get more flexible about it, and more willing to ask when I'm in situations that call for it.
Anyone else have a systematic bias, one way or another? Anybody trying to overcome it?
(relevant: The Daily Ask, a website full of examples of ways you can make requests. Some of these shock me -- I wouldn't believe it's acceptable to bargain over store prices like that. But, then again, I'm running on corrupted hardware and I wouldn't know what works and what doesn't until I make the experiment.)
So, I'm an ask person. Oftentimes, I don't even sing "Happy Birthday" to people unless I know they appreciate it, because my experience is people seem to find the burst of concentrated attention more offputting than they enjoy the well-wishing, and thus I have little desire to take part.
One consequence is that I generally don't give people gifts on occasions. That doesn't mean I don't give gifts- just that I don't give something to someone unless they have a readily identifiable need that I can fill. And so my parents, who have gotten me something without fail every Christmas and birthday, have only received one return gift, which they immensely enjoyed.*
But, for various reasons I'm trying to become better at traditional social things, and so last night while thinking about this and my impending vacation home, I thought "I ought to get my parents gifts." Of course, there's nothing they need at the moment- their planning has beat out their bad luck so far, leading to them being rather well off, and their wants are moderate enough to be satisfied- but when I rephrased the question from "what can I buy to genuinely improve my parent's lives" to "what can I buy to signal I know their tastes" I immediately came up with answers for both of them. It was sort of shocking how quick it was. Finding suitable instances of those imaginary gifts may not happen soon enough to act on those thoughts, but beyond that I'm not sure I want to change my dynamic; we're practical enough to be holding our Thanksgiving celebration a week late to beat the traffic, do we really need to signal our affection expensively? But it's worth trying at least once.
*After the switch to digital TV, they were no longer able to watch Scrubs reruns, a cherished nightly ritual, and so I bought them the season DVDs. The opportunity presented itself only because I knew they wouldn't be willing to buy it for themselves.