Examlex
_____ is a neurotransmitter involved in sleeping and eating.
Cognitive Performance
The ability to perform mental tasks and processes related to knowledge, attention, memory, judgement, and reasoning.
Exam Grades
The numerical or letter indicators used to quantify a student's performance in an academic examination.
Random Assignment
Researchers’ assignment of participants to groups by chance, to reduce the likelihood that an experiment’s results will be due to preexisting differences between groups.
Experimental Research
A methodological approach in scientific studies where variables are manipulated to assess their effects on other variables, typically within a controlled environment.
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