In "Childhood," JK Rowling appears to have immediately adapted her language in order to communicate with an adult, we see this when she says, "I have no nostalgia whatsoever for childhood." By using the word "nostalgia" the audience can deduce that she has adapted her language by using such a complex word. However her discomfort with the topic of her childhood is apparent when she says "I-I mean erm" this indicates to the audience that she is talking about a sensitive topic due to the use of the filler "erm" suggesting that she is struggling to continue. Moreover, we see this again when she says, "I wouldn't go back if you paid me." In this sentence she tells the audience how bad her time was during her childhood. When she says that she wouldn't go back even if she was paid, she doesn't mean it, it is an idiom, an expression. .
Rowling reminisces about her childhood's positive aspects, she talks of "joy" in her childhood, "such as you can't recapture" and she also uses the term "totally weightless". By using the word "joy" she suggests a high degree of happiness, possibly one what she does not feel at the moment. This is then further supported by her notion of being "totally weightless" which leads us to believe that she much rather preferred childhood rather than adulthood due to not having adult responsibilities. However this comes across as somewhat confusing as she starts with the "joy" of her childhood and ends on a rather dark note.
The amount of fillers Rowling uses in this interview suggests that she is constantly considering how she wants to make her points, as if she is still analyzing herself as she is speaking. We see this during the '60 Minutes' interview when she says "I-I was bullied and erm I hated it erm." When she hesitates during her answer, this consequently tells the audience that she is in doubt of whether to say something or not and trying to alter the story so that it's not as bad as it was.