When adults come into contact with infants, the adult often changes their persona (and communicates in a way they wouldn't with other adults) in order to try to elicit a reaction from the infant, to teach them life lessons, or to physically stimulate them. They may simplify their speech to concise sentences or words for them to repeat, or speak in nonsensical phrases (known as baby talk). They may make simple movements with their finger (such as circles) on objects for them to copy, or point to brand names/logos or people in family photos to see if they identify them. They may also choose to play one of various games, many of which are old favourites (such as Where's the baby or Got your nose). While the parents or carers may or may not choose to do this on when alone with the child, when in the presence of guests the conversation tends to either divert completely to this type of interaction or at least have these forms of interaction take place as asides in the conversation. Sometimes the interaction is one-sided, with the adult taking satisfaction with their attempts, even though the infant does not react, or react without really understanding it. At other times, the interaction is two-sided, and both parties derive pleasure or other emotions from it. Some adults do not change at all when in the presence of other families' infants.