Examlex
When will access to safe drinking water be a significant issue for at least two-thirds of the world's population?
Reward
A stimulus that increases the likelihood of a behavior being repeated.
Crespi
Refers to psychologist Leonard Crespi, known for his work in experimental psychology, especially in motivational research involving rewards.
Hunger Rats
Rats that are used in research studies to investigate the physiological, psychological, and behavioral processes related to hunger and satiety.
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