Examlex
The mean of any normal distribution is always zero.
Male Or Female
The biological classification of an organism as male or female, typically based on reproductive anatomy and genetic composition.
Belonging
The feeling of being accepted and included as a member or part of a group or community.
Piaget
A Swiss psychologist known for his pioneering work in child development, particularly his theory of cognitive development that describes how children's intellect grows through stages.
Object Permanence
The understanding that objects continue to exist even when they cannot be seen, heard, or otherwise sensed.
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