Humans generally have a capacity for cognitive function once born, so almost every person is capable of learning or remembering. However, this is tested using tests like the IQ test, although these have issues with accuracy and completeness. In these tests, the patient will be asked a series of questions or to perform tasks, with each measuring a cognitive skill,[citation needed] such as level of consciousness, memory, awareness, problem-solving, motor skills, analytical abilities, or other similar concepts.[citation needed] Early childhood is when most people are best able to absorb and use new information.