Observe a group of 14-month-olds at the park and you'll note that they're basically loners. Socializing isn't really toddlers' thing, and at this age a child is unlikely to do anything more than engage in parallel play, during which he/she and his/her companions play side by side but don't interact — unless it's to grab whatever object another child is playing with. While this may be frustrating for you, it's completely normal behavior. At this age a child doesn't think of his/her playmates as friends, or even people; they're objects. Since a 14-month-old is very much the center of his/her own universe, he/she thinks other children can be pushed, pulled, and poked the way a toy can. The only thing that really matters — to her/him — is what she/he wants. It's not selfishness — it's just the way everyone sees the world at this age.