“The disciplining of children’s voices is gendered. I found that girls were told to be quiet or to repeat a request in a quieter,
‘nicer’ voice about three times more often than were boys (see Table 3). This finding is particularly interesting because boys’ play
was frequently much noisier. However, when boys were noisy, they were also often doing other behaviors the teacher did not allow, and perhaps the teachers focused less on voice because they were more concerned with stopping behaviors like throwing or running.
Additionally, when boys were told to ‘quiet down’ they were told in large groups, rarely as individuals. […] Girls as individuals and in groups were frequently told to lower their voices… The girls learn that their bodies are supposed to be quiet, small, and physically constrained.”
Karin A Martin, from Becoming a Gendered Body (1998)