Examlex
Which of the following nutrients did researchers recognize first?
Substance
In the context of health and psychology, often refers to psychoactive drugs that can affect mental processes and that may be subject to abuse.
Self-Concept
An individual's perception of self, encompassing beliefs, feelings, and thoughts about one's identity and abilities.
Preoperational Stage
The second stage in Piaget's theory of cognitive development, occurring roughly between the ages of 2 and 7, characterized by symbolic thinking, egocentrism, and a lack of logical reasoning.
Sensorimotor Stage
The first stage of cognitive development in Piaget's theory, where infants learn about the environment through their senses and actions.
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