I made this baby hat meant for 0-6 month olds. Obviously we can’t know what babies are thinking since they don’t have the ability to talk. One can gauge their thoughts and emotions based on reactions, but it is not always accurate. For instance a baby doesn’t really gain the ability to smile until 3 months old. Since they can cry, you know when they are upset, but you don’t always know when they are happy or excited. For instance, how do you know if a baby is actually enjoying the song you are singing to them? This hat has EEG sensors on the inside that would transfer the information immediately to a phone application to allow parents/caregivers to gauge a baby’s emotion more accurately. There are also small lights on the top of the hat that would light up when the EEG sensors detect that the baby is excited.