The developmental psychologist and genetic epistemologist, Jean Piaget, investigated the cognitive development of children. He identified four stages from the sensorimotor period, culminating at 2 ...

Research on infant thinking suggests that babies are more complex thinkers than was once believed. There is now evidence that, by the end of their first year, children are capable of logical reasoning ...

Borderline intellectual functioning (BIF) isn’t currently a stand-alone diagnosis. Some diagnostic guidelines use it as a descriptive code, while others include it within a broader spectrum of ...

Fluoride has long been the subject of conspiracy theories. In the 1950s, some believed its presence in US tap water was a communist plot to undermine America (famously satirised in the film Dr.