Examlex
An investigator should never focus on multiple parameters (means,medians,ranks).
Formal Operational
The final stage in Piaget's theory of cognitive development, characterized by the ability to think abstractly, logically, and to carry out systematic planning.
Concept of Conservation
A cognitive ability in child development whereby the child learns that quantity or amount does not change despite a change in the form or arrangement of objects.
Object Permanence
The understanding that objects continue to exist even when they cannot be observed or heard, a concept developed during early childhood.
Abstract Reasoning
The ability to analyze information, detect patterns and relationships, and solve problems on a complex, abstract level.
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