Sharon Rose reminds me that her 4 1/2-year-old daughter Helen has been pronouncing taps in flapping contexts as [t] for quite some time now. Sharon is Canadian and her parents are English, and due in part to this background Sharon more often than not does not apply flapping herself. Helen’s father Tadesse is from Ethiopia, and there are also very few if any taps to be found in his English.
One might think, then, that Helen has picked up on the tendency in her family’s speech toward the variants without flapping. What’s interesting, though, is that Helen has [t] even where there is no [t] variant; so, words like latter and ladder are both [lætɚ] with a [t].
I have a guess about what’s going on here, consistent with what I’ve said before but probably on as flimsy a limb as what Bob said.
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