Same genes, different results

In some ways, our three children are similar to each other.  They all look somewhat alike, they all hate road trips, and they all love climbing on daddy.  But in other ways, they are very, very different.  For example, Jason and I often put the kids to bed and take the monitor to the neighbors' house.  We can hear if any of the kids make any noises and we run up the stairs to our apartment if we hear them.  But sometimes, if the older ones are quiet, we might not hear them get up and use the bathroom.  A few times they have found no one home and cried, so we come right up and reassure them that we are nearby and listening. However, the last three times that each of them woke up at night, they had three very different reactions:

Ellie - She woke up to use the bathroom and discovered that no one was in the living room.  She walked around the house silently, saw that no one was there, and went back to her room to quietly cry herself back to sleep (I know it's heartbreaking; we had a talk about her talking to us in the monitor if she wakes up and we will come right back).

Rowan -  He woke up, noticed that no one was here, and decided to take advantage of the opportunity.  So, he silently went into the kitchen, dragged a chair to the corner of the room, climbed up onto the counter, reached into the very top corner of a cabinet, and pulled out a box of cookies.  After eating two of the cookies at the kitchen table, he went into the living room and played quietly until Jason returned home and found him there. 

Violet - If she wakes up during the night, she cries until someone comes and gives her a drink and puts her back to bed.  There is no way we would not hear her wake up!