Examlex
In general notation,the probability of observing at least one of event A and event B is:
Formal Operational
A stage in Piaget's theory of cognitive development where individuals begin to think logically about abstract concepts.
Systematically Analyze
To examine something methodically and in detail, usually for the purpose of explanation and interpretation, often applying logical and standardized procedures.
Cognitive Development
The process of growth and change in intellectual capabilities such as thinking, reasoning, and understanding over the course of a human life.
Experiment
A carefully regulated procedure in which the researcher manipulates one or more variables that are believed to influence some other variable.
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