Examlex
One of the primary techniques for reducing both the placebo effect and experimenter expectancy effects is random selection.
Scientific Inquiry
A systematic process of investigation and experimentation used to explore observations and answer questions about the natural world.
Abstract Reasoning
The ability to analyze information, detect patterns and relationships, and solve problems on a complex, intangible level.
Concrete-operational Thought
A stage in Piaget's theory of cognitive development during which children gain the ability to think logically about concrete events.
Formal-operational Thought
The fourth and final stage of Piaget's theory of cognitive development, characterized by the ability to think abstractly, logically, and systematically.
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