Personalized Cognitive Science Brain Toddler Long Sleeve T-Shirt. Cognitive science brain Toddler Long Sleeve Tee - Black are a fun way to show off your smarts with style! This cerebrum with a happy frontal lobe makes a funny gift for students or doctors of cognitive or neuroscience! A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.