My oldest daughter was born in 1972 and I was determined to provide toys, clothes and experiences that didn't stereotype her. I wouldn't let my poor mum buy a pram for the first christmas, but agreed mum could buy a push along truck with colourful wooden bricks in it. The bricks were emptied out, and my little girl got a peg, wrapped it in a tea towel, and sang happily, as she snuggled her baby into her pram. Mum sat smiling knowingly in the corner. I recall an afternoon on the beach with my two little girls, and my sister with her two little boys, all the children pre school age. The boys spent all their time attempting to find worms in the worm cases left on the sand. The girls spent their time avoiding the worm cases, and trying to find shiny pretty shells. One of my sisters little boys was given a pram for his 3rd birthday, in which he pushed Monkey, his favourite toy around. Nanaj, yes, there is research about the need children have to explore aggression/ nurture etc through play.