Hi L.,
This is a great question and can be tough to correct because your child has confused her developmental need for attention and your response to that need, with her request to purchase something, let me explain.
Attention: All little ones are developmentally focused on seeing what makes Mommy react and what makes Mommy pay attention to me. Think about it, when you say, "No we’re not buying this today", what do you do? AND look at this from a preschooler’s point of view.
You stop what you're doing, your turn your head, you look directly at her, and then you talk to her. To a preschooler that’s a bunch of attention, I call this "a slice of parent pie".
I can hear some of you now, "but sometimes I yell, how is that the type of attention she wants?"
She knows there are other ways to get a bigger or nicer piece of attention, or parent pie, but since she’s so young, she’s willing to take what she can get.
Buy it for me today: A child will continue to make requests for you to buy her something until she feels that her request has been heard.
Solution: The best way to handle this is not to ignore her request, AND definitely don't give in and buy it for her. The best way to handle this is to give her some place to put her desire to purchase something, and the way you handle this also fills her need for attention.
I suggest that you buy a .99 notebook and pen and keep it with you at all times. When she says, "Oh, I have to have it!" instead of creating a power struggle and saying No! ask her this,
“I know you understand that we aren't buying this today, do you love it enough to put it in your wish book? Should we put it on the list for Christmas or on your birthday list?"
Doing this shows her, I hear you, I do pay attention to you, and your desires are taken seriously, we’re just handling things the way Mommy wants too.
This works well.
For more information just like this go to, www.proactiveparenting.net (notice .net)