Examlex
The primary psychoactive agent in marijuana is .
Field Researchers
Professionals who conduct research outside of a laboratory setting, gathering data directly from natural or real-world environments.
Surveys
A method of gathering data from a large number of people, typically by asking a series of questions.
Evaluation Research
A systematic method for collecting, analyzing, and using information to answer questions about projects, policies, and programs, particularly about their effectiveness and efficiency.
Secondary Data Analysis
The process of analyzing data that was collected by someone else for a different purpose.
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