i have to say, i don't agree with the way they've expressed it but i do agree with the posters who say that ignoring a tantruming child does make the situation worse... mine don't tantrum in shops anymore as they know that
a) they don't get what they want
b) they get a very cross mommy
i've alway found talking quietly and calmly to them and explaining to them that everyone is waching them and thinking badly about them snaps them out of it enough for me to explain what we need to do/distract them.
and my dd is a mega tantrum thrower... she just learned very quickly that doing it in public is a very swift way to lose out on nice things, not gain them.
it helps that i've never really given them things in shops so they don't bother asking much and they know that shouting for something is guaranteed to ensure they don't get it as that's what happens at home.
dd used to throw tantrums if she didn't want to be in the shop but getting down on her leval and talking (often angrily... no hippy dippy soft touch parenting ) and explaining that shouting and screaming was only going to make everyone angry at her and wouldn't change the fact that we had to shop tended to work.
she attempted the rolling on the ground tantrum once in a shop and it didn't work as i just picked her up, said 'right, that's it, no treat after dinner' and walked of with her still screeching in my arms and pointed out how many people were looking at her being horrible.
i think kids are never too young to learn that how they behave affects the people around them and you'd be surprised how quickly they change they're bahaviour if it's pointed oout to them that it's upsetting people.
in ds1's case he's most likely to tantrum as he doesn't want to walk/doesn't want to go in the trolly/wants to be carried etc. i let him do what he wants unless it's not physically possible like carrying him in which case i explain why i can't and give him another option. my philosophy is always 'don't say no unless there' s a good reason' so my kids generally understand that if i could let them do something i would so there's no need to shout.
i also find 'mummy doesn't want to be here either but we have no choice so stop fussing and lets get it done quickly' tends to nip a strop in the bud for long enough to whizz round and get it done.
now if someone could tell me how to stop ds1 from setting off the alarms every time we're in the supermarket i'd be sorted