Babies: Their Wonderful World

BBC2, 9pm, Monday

Guddi Singh looks at how children begin to become independent, with Professor Elisabeth Hill testing newly crawling babies with an optical illusion that looks like a vertical drop.

Dr Emily Jones attaches sensors to an 18-month-old to monitor the physiological changes in her body during a tantrum, while Professor Usha Goswami attaches babies to brain scanners to see how infants respond to speech.