Examlex
Questionnaires and scales are widely used in survey research.
Subtract
To take one number away from another, resulting in the difference between the two values.
Cognitive Development
The study of how children and adults develop and evolve in terms of thinking, reasoning, and understanding.
Water
A transparent, odorless, tasteless liquid compound of hydrogen and oxygen, H2O, essential for most plant and animal life and used by all living things.
Glass
A hard, brittle material typically made from silica, used in windows and other items for transparency and strength.
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