I've heard a number of Americans who understand a little bit about Asian reserve speka of it as a negative thing in specific situations. They see it as something that gets in the way of what's important. I'll dispute that here.
Asian reserve and the American atittude of, "Think highly of yourself. Be confident!" often collide in my church.
The church staff and lay leaders expect members who wish to lead or contribute in some other way to approach them and volunteer. This is not the Asian way.
The typical person born in Japan and China (and maybe Korea) will not step forward and say, "I can do that. I want to do that." Maybe in an indirect fashion, the person might--ie. talk to the person in charge and say, "I've lead music before." Reserve in this application is closely linked to humility. "I'm too young or someone else better than me should do this."
I've heard that humility/reserve called "false humility." Sometimes it may be, but, Americans, don't paint with such broad brush strokes.
My friend born in an Asian country recently responded to an announcement that the Cafe service (an informal venue with band for worship and teaching) needed worship leaders. She's had experience of leading worship and singing to congregations in a band with others associated with her home country. She sings great and I'd love to see her upfront.
My understanding from what she's told me is that when she talked to the staff person seeking worship leaders, she downplayed her abilities. "I can't read music well..." etc. Was this false humility? No, she really wasn't sure she was good enough.
In conversations together, I told her she was. I also explained that by first presenting her deficiencies to the staff person, he might think she really wasn't qualified because Americans of this age and the SF Bay Area's culture don't do that.
A typical American would say initially what his/her strong points were and what experience she brought to the situation. Probably only in actual tryouts or interview would s/he mention that sight reading was difficult for him/her. And note the phrasing:not "I can't sightread" as my friend had said; not the Am. phrase of "I can..." that downplays any deficiencies.
Was my friend pretending to be humble? Absolutely not! I know from repeated conversations with her that she really was afraid that she wasn't good enough.
Americans reading this may think, "TShe should have e better self-image. Be confident."
Beware that is not Jesus' message. He tells a story of a guest coming to a dinner party. Apparently in that culture, when you took a seat closer to the host, it meant you were a high status person. Jesus recommended that a guest take a lower seat and then the host might invite that person to move higher up.
Paul, another writer in the New Testament, does tell us that we should think of ourselves realistically -- not too highly and not too lowly. But doing that is difficult when your home culture has instilled in you the idea that you must be perfect or that it is a proud thing to do so.
Is pretending confidence or being apt to have confidence, even if unfounded, a good quality of typical Americans? I don't think so.
And, dear typical American, please don't tell Asians to change--that is too hard to do about this basic concept of reserve and humility. Just try to understand them and interpret their words in a different fashion than you'd interpret a person born in the Bay area who has had different concepts bored into them through home and school.