Examlex
The strength and rate of contraction of the heart can be influenced by the autonomic nervous system.
Cross-Sectional Research
A research method that involves analyzing data from a population, or a representative subset, at a specific point in time.
Theory
A well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed through observation and experimentation.
Reliability
The degree to which an assessment tool produces stable and consistent results.
Validity
The extent to which a test, experiment, or measurement accurately reflects what it is intended to measure.
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