Between six and eight months, your baby's memory develops. He anticipates events based on his past experience. He thinks before he acts. He makes associations. He knows that his toy will make a sound when he drops it. When you put your coat on, he cries because he knows you are leaving. He will remember the way things looked before, such as the placement of furniture in his room, and he will notice any changes. He becomes aware of the timing of certain events. He may crawl to the door to greet his babysitter before she arrives. Awareness Of Self And Others At this age, your baby becomes aware of his own movements and enjoys watching them. He likes looking at himself in the mirror. He will respond to a photograph of himself. He also begins to distinguish familiar faces from strange ones. Things To Stimulate His Mind Give your baby things in assorted colors, shapes, and sizes to play with and explore. Toys that require him to do something--nesting cups or stacking rings--will stimulate him to try new things. He will naturally discover and strengthen new abilities. The more you interact with your baby and his toys, the more effective they will be at stimulating his mind.